Top 20 Safety Features

The most significant and sought-after technology on modern vehicles makes the road safer for drivers, passengers, pedestrians and even animals.

We now have vehicles that can park themselves, car radios that can hold enough music for a cross-country trip and climate controls that can measure occupants' body temperature. But of all the great gadgets on cars these days, safety technology is by far the most vital—and the most in demand.
In a 2006 survey of 500 consumers conducted by Accenture, more than two-thirds of respondents ranked safety as the most important technology to have in their automobiles, and seven out of 10 were willing to pay extra for safety features. Accenture is the largest consulting firm in the world and is one of the largest computer sciences and software companies on the Fortune Global 500 list.

Safety technology has experienced a quantum leap in the last few years, with advances spurred by the government in an effort to lessen loss of life and injury, as well as automakers seeking a competitive edge. But it's equally driven by consumer awareness.

"Auto safety took a big step forward in the '90s, when there was a high awareness of ABS brakes and airbags," notes Charlie Vogelhiem, vice president, automotive development, with J.D. Power and Associates. "We saw that when people had a vehicle that didn't have airbags, for example, they were less inclined to keep it."

Below we highlight the top 20 auto-safety technologies currently available, ranging from the common to the cutting-edge. And if auto-safety tech follows the typical pattern, even innovative features currently found only on higher-end cars should trickle down to more affordable automobiles. "As consumers replace their existing vehicles and the technology price tag continues to decline," explains Accenture's Richard Spitzer, "[safety features] will be part of the deciding factor in the car purchase decision."

Pre-Collision Systems
This technology uses various methods to sense and prepare for a collision. When a sensor signals an impending crash, the system takes preemptive action such as pre-tensioning the seat belts, preloading the brakes and even aligning airbags to better protect occupants.

Electronic Stability Control
To help drivers maintain control, ESC compares steering and braking inputs with the car's lateral acceleration, rotation and individual wheel speeds. If a difference in the driver's intended path and that of the car is detected, brakes can be automatically applied and the throttle can be dialed back until the vehicle is back on track.

Brake Assist
This technology resulted from a study that determined that most drivers do not push the brake pedal hard enough in emergency situations. So when sensors detect "panic" braking, Brake Assist applies maximum brake boost and therefore decreases stopping distance.

Dynamic Head Restraints
Few people adjust their car's headrests properly to prevent whiplash, so some vehicles now come with active head restraints that move into more effective positions when a car is rear-ended. Volvo's Whiplash Protection System (WHIPS) and Saab's Active Head Restraint (SAHR) go a step further by getting the seats to help in mitigating whiplash injuries.

Dual-Stage Airbags
The National Highway Traffic Safety Administration (NHTSA) stipulated that all passenger cars and light trucks produced after September 2006 must include passenger-side front airbags that are automatically enabled or disabled depending on whether a front passenger is detected (typically by seat sensors), and some now deploy in stages depending on the severity of a crash or the weight of the front-seat passenger.

Side and Supplemental Airbags
Side airbags can greatly reduce injuries, since occupants are often more vulnerable than in front- or rear-end crashes, where there's more of a "crumple" zone to protect them. Side airbags are not mandated by the NHTSA, however, and auto manufacturers can decide where and how to deploy them, and whether they're a standard or optional feature. Some luxury cars also include supplemental airbags, such as with BMW's Active Knee Protection and Head Protection systems.

Blind Spot Warning Indication
The Volvo S80's Blind Spot Information System (BLIS) uses a camera on each side-view mirror to scan a driver's no-see zone and indicators in the corners of the front windows alert the driver to the presence of vehicles. The Side Assist in the Audi Q7 and Side Blind Zone Alert in the 2008 Buick Lucerne and Cadillac DTS and STS work in much the same fashion, except the indicators are located on the side-view mirrors, and GM's system use radar instead of cameras.

Lane Departure Warning System
Infiniti's Lane Departure Warning (LDW) System uses a camera in the rearview mirror to detect when the vehicle gets close to the lane marker and sounds an audible warning. GM will also offer the technology on the 2008 Cadillac DTS and STS, and Buick Lucerne.




Night-Vision Camera System
Hitting an animal or pedestrian while driving after dark is an accident night-vision cameras can help prevent. BMW's night-vision system senses thermal energy and Mercedes' projects infrared light in front of the vehicle, and both show night-vision images on a screen in the dash.

Adaptive Headlights
This technology directs light from the headlights in the direction that the steering wheel is turned, to help illuminate where the driver intends the car to go. A feature currently found only on higher-end cars, adaptive headlights will likely trickle down to more affordable vehicles.

Tire-Pressure Monitor
Starting in the 2008 model year, the Feds will require all new vehicles to include tire-pressure-monitoring systems, which use sensors to provide information on tire inflation to a display in the instrument panel. Vehicles ranging from sports cars to SUVs already allow drivers to check tire pressure on the fly, and some show pressure in individual tires.

Rollover Protection
Manufacturers first offered airbag systems that inflate from the headliner or ceiling in top-heavy SUVs to protect occupants in case of a rollover. Ford's Safety Canopy, for example, covers 65 percent of the window surface in the first two rows of seats in Ford, Mercury and Lincoln SUVs, and the system is also available on the Volvo and Land Rover SUVs, as well as on the Ford Freestyle, Five Hundred, Mercury Montego and the Volvo C70 convertible.

Head-Up Display
Looking away from the road for even a few seconds can be dangerous. By projecting vital information from the speedometer, tach or navigation system on the windshield, a head-up display (HUD) allows drivers to keep their eyes straight ahead.

Bluetooth Hands-Free Phone System
While head-up displays let you keep your eyes on the road, Bluetooth lets you keep your hands on the wheel when using a mobile phone. The technology establishes a wireless connection with a compatible phone so that calls can be made and received using buttons on the steering wheel and voice commands.

Voice Activation
Using voice activation, you can change a radio station or adjust the volume on the audio system, raise and lower the temperature of the climate control, even enter destinations into a nav system—all without lifting a hand off of the wheel.

Navigation Systems
GPS navigation systems take the guesswork out of getting where you're going—and are much safer than reading a map behind the wheel. They issue turn-by-turn guidance and will reroute you if you miss a turn.

Adaptive Cruise Control
Adaptive Cruise Control automatically keeps a safe distance between you and the car ahead so that the driver doesn't constantly have to adjust the speed. A radar sensor monitors the distance and speed of vehicles in front of you, and most systems allow selecting a gap with which you're most comfortable.

Rearview Camera
Rear-vision cameras first appeared on super-sized SUVs to help drivers see behind the vehicles. But they are now available on luxury and sports cars as well as minivans and crossovers. Some also include visual aids that allow aligning a vehicle with an intended parking spot.

Obstacle Sensors
As with rear-vision cameras, obstacle sensors can help make you aware of objects you wouldn't normally see. The systems detect objects in close proximity to the vehicle and issue audible and/or visual warnings.

Emergency Response
OnStar and similar telematics services are known for "concierge" features such as unlocking doors and providing directions. But in the case of an accident they can pinpoint your location and detect if an airbag has deployed so that emergency personnel can respond accordingly.

Heartbeat Monitor
The key fob remote for the 2007 Volvo S80 will not only tell you if someone has broken into the vehicle while you were away, but a heartbeat sensor will alert you if someone is hiding inside.

While safety technology can save lives, features such as electronic stability control can also give drivers a false sense of security. "People may not understand that if you don't maintain your brakes, for example, the stability control won't work properly," maintains Lauren Fit, a.k.a., The Car Coach. And while safety technology compensates for human error, it can't make up for lack of common sense. "Nothing takes the place of putting down the phone and paying attention to what you're doing," remarks J.D. Power's Charlie Vogelheim.
(C)MSN

Top 10 Least Expensive (TCO) Luxury Vehicles to Own

Cars at the lower end of the luxury class are the least costly to own because their lower starting prices minimize the effects of depreciation.

Luxury car buyers looking for the best long-term value should cross-shop vehicles at the lower end of the price spectrum. The lower the starting price of a vehicle, the more likely it is to mitigate the single largest financial hit associated with car ownership — depreciation.

This is the second feature in SMART-NEWS's series on vehicle ownership costs, and here we rank the top 10 luxury vehicles with the lowest cost of ownership over five years.
See also our list of the Top 10 Most Expensive Vehicles to Own.

Depreciation is the largest ownership cost for any vehicle. Therefore, models with lower sticker prices end up dunning owners less than models with higher manufacturer suggested retail prices (MSRPs).

That's true even if a higher-priced model holds its value better: The Audi A3, the fifth least expensive car to own according to our research, depreciates a whopping 71 percent from its base MSRP over five years. By contrast, Porsche’s 911 Turbo — the sixth most expensive car to own — loses just 54 percent of its base price in five years. But the A3 starts at around $25,000, compared to $122,900 for the 911 Turbo. And 71 percent of $25,000 comes out to $17,750, which is a lot less than the 54 percent of the Porsche’s $122,900, or $66,366.

Looking at those numbers, it starts to become clear why the top 10 luxury vehicles with the lowest ownership costs all have base prices below $35,000.

Lower-priced cars also cost less in other categories, says David Wurster, president of Vincentric, the research firm that provided data for our rankings. “You see that in taxes and insurance,” he says.

But bear in mind that Vincentric’s projected ownership costs are only estimates. Actual expenses will vary by region. “There are large variations in maintenance and repairs when you look at a state where costs of living are higher, because labor rates are higher,” Wurster says. Similarly, people living in high-tax states will likely pay more in vehicle taxes and other fees. Insurance rates also change by region, as do fuel prices, he says. All of these are factored into the five-year ownership costs used to rank the vehicles on our list. Click here to see the full list of vehicles in the slideshow.

Drivers do have some control over ownership costs, regardless of where they may live. For instance, driving style and distances traveled determine fuel, maintenance and repair expenses. Plus, insurance premiums remain lower with good driving records.

“There are substantial variations in insurance rates between carriers even in the same region,” says Michael Calkins, who tracks ownership costs for AAA's national office as manager of its approved auto repair program. “You have to be a smart shopper for everything, not just for the car, but also for the insurance.”

Owners who care well for their cars can even beat the deprecation average. “You need to maintain your vehicle properly,” Calkins says. “Keep it in good condition cosmetically and mechanically to maximize its trade value.”

Japanese and Swedish brands dominate our list of the 10 least expensive luxury vehicles to own, likely due to the fact that they tend to have lower starting prices. One German and one American nameplate help balance out the rankings.

The 10 least expensive to own luxury vehicles are determined by estimating six expenses over five years: depreciation, interest and opportunity costs, fuel, maintenance and repairs, insurance, and taxes and fees (see explanations below). The rankings include 2007 models only.

Vincentric breaks down ownership costs for every variation within a model line, so the ownership costs used to rank vehicles on this list are averages of all variants in a given model line. For example, Acura sells four versions of its TSX sedan, the least expensive luxury car to own. Vincentric computes separate lifespan costs for each of the four variants.

The data used in this ranking is from late May 2007 (Vincentric updates cost-of-ownership estimates monthly). Interest expenses assume a five-year loan at 6.86 percent with a 15 percent down payment. Opportunity costs consider what owners would have earned if car expenses went into certificates of deposit instead. Insurance costs are for a typical driver under age 65, with a clean record. Vincentric used the EPA's 2007 Fuel Economy Guide to calculate fuel costs.

10. Lincoln MKZ
Starting MSRP: $29,305
Five-year cost of ownership: $55,011
Depreciation: $19,718
Interest and opportunity cost: $10,456
Fuel: $10,983
Maintenance and repairs: $3,880
Insurance: $7,851
Taxes and fees: $2,123

The Lincoln MKZ is the only model from a Michigan-based auto company that makes the list of either the 10 least or 10 most expensive luxury cars to own. It squeezes onto the 10 least list by dint of its relatively low sticker price. With a base MSRP under $30,000, the MKZ can get away with a high depreciation rate. Averaging $19,718 for the front-drive and all-wheel-drive versions sold by Lincoln, the MKZ's depreciation takes 67 percent of its starting price.

9. Lexus ES 350
Starting MSRP: $33,470
Five-year cost of ownership: $54,585
Depreciation: $19,549
Interest and opportunity cost: $10,905
Fuel: $10,648
Maintenance and repairs: $3,888
Insurance: $7,315
Taxes and fees: $2,280

The ES 350 from Lexus, the luxury division of Toyota, has been called a Camry in fancy attire. That may account for its showing among the 10 luxury leaders in lowest total ownership cost. The sedan is the highest-priced model that makes the list, with a starting MSRP of $33,470. That raises its loan interest and opportunity cost, as well as its taxes and fees. But the Camry's reputation for dependable quality rubs off, so the Lexus does well with depreciation, and it also enjoys the second lowest insurance cost.

8. Acura RDX
Starting MSRP: $32,995
Five-year cost of ownership: $54,502
Depreciation: $17,826
Interest and opportunity cost: $11,323
Fuel: $12,542
Maintenance and repairs: $3,538
Insurance: $6,950
Taxes and fees: $2,323

The Acura RDX is the only SUV that runs with the 10 luxury vehicles that are least expensive to own. With the gas-guzzling rap against SUVs, it seems appropriate that the RDX has the highest estimated fuel cost in the group. At $12,542 over five years, the Acura squanders 20 to 25 percent more fuel than some passenger cars in the ranking. Still, for a sport utility, its EPA fuel economy rating of 19 mpg city/23 mpg highway is good — especially for an all-wheel-drive hauler with pep and pizzazz.

7. Lexus IS 250
Starting MSRP: $30,255
Five-year cost of ownership: $53,220
Depreciation: $16,998
Interest and opportunity cost: $10,793
Fuel: $10,480
Maintenance and repairs: $3,700
Insurance: $9,060
Taxes and fees: $2,189

As a sport sedan made for more aggressive posturing, the Lexus IS 250 carries the highest average insurance cost among the 10 least expensive luxury cars to own. That excess alone moves it lower on the list. With better resale value — and therefore lower depreciation — than four of the six luxury models that have lower lifespan costs, the IS 250 would rise at least one spot in the ranking, even though its purchase price is higher than the six models that score lower lifetime ownership costs.

6. Volvo V50
Starting MSRP: $26,690
Five-year cost of ownership: $52,906
Depreciation: $18,306
Interest and opportunity cost: $10,054
Fuel: $10,346
Maintenance and repairs: $4,006
Insurance: $8,176
Taxes and fees: $2,018

Like other European models among these economy leaders of the luxury class, Volvo's introductory-priced wagon stumbles with a high depreciation rate that saps its value. The average depreciation of the three V50 versions Volvo sells, at $18,306, comes to 69 percent of the car line's starting MSRP, among the highest in the group. The V50 wagon would do better, but the higher priced, all-wheel-drive version pulls its average ownership costs upward.

5. Audi A3
Starting MSRP: $25,340
Five-year cost of ownership: $51,513
Depreciation: $18,092
Interest and opportunity cost: $9,863
Fuel: $10,026
Maintenance and repairs: $3,697
Insurance: $7,815
Taxes and fees: $2,020

As a hatchback, the Audi A3 is the only model among the 10 least costly luxury cars to assume that classic economy car shape. Fittingly, its five-year fuel cost estimate, at $10,026, is the lowest among the least expensive to own. But the A3 suffers from rapid depreciation. The model line's five-year depreciation, averaging $18,092, steals 71 percent of the A3's starting price, the highest percentage among the 10 lowest cost luxury cars.

4. Saab 9-3 SportCombi
Starting MSRP: $27,495
Five-year cost of ownership: $51,499
Depreciation: $17,457
Interest and opportunity cost: $9,672
Fuel: $11,521
Maintenance and repairs: $3,159
Insurance: $7,740
Taxes and fees: $1,950

Vincentric's David Wurster explains that higher purchase prices point to higher ownership costs. The Saab 9-3 SportCombi shows how. The wagon's starting price is just $1,245 higher than its kindred, the 9-3 Sedan. Over five years, the SportCombi depreciates about $200 more, takes about $300 more in interest and opportunity costs, $300 more for insurance and $100 more in taxes and fees. Add about $300 worth of additional gas consumed by the heavier wagon and the SportCombi drops two places below the 9-3 Sedan among the least expensive to own vehicles.

3. Volvo S40
Starting MSRP: $24,240
Five-year cost of ownership: $51,484
Depreciation: $16,941
Interest and opportunity cost: $9,736
Fuel: $10,783
Maintenance and repairs: $4,005
Insurance: $8,104
Taxes and fees: $1,915

Starting at $24,240, the Volvo S40 sedan is the lowest-priced luxury car among these 10 models with the lowest ownership expenses. But its average depreciation, at a whopping 70 percent of the base price over five years, hits hard. Not only will you spend more to own the S40 than you will for the top-rated Acura TSX, you'll also spend more when you visit the repair shop. At $4,005, the S40's maintenance and repair expenses tie with the Volvo V50 wagon as the highest among these lowest 10.

2. Saab 9-3 Sedan
Starting MSRP: $26,250
Five-year cost of ownership: $50,282
Depreciation: $17,247
Interest and opportunity cost: $9,352
Fuel: $11,197
Maintenance and repairs: $3,159
Insurance: $7,437
Taxes and fees: $1,890

The first of five European luxury models with the lowest lifespan costs, the Saab 9-3 Sedan benefits from its relatively low purchase price. That puts it in second place among the least expensive to own vehicles, even though depreciation grabs 66 percent of its starting MSRP. At their base prices, you'll pay less to purchase a 9-3 Sedan than an Acura TSX, the least expensive luxury car to own. But through five years, the 9-3 will gobble up $3,000 more.

1. Acura TSX
Starting MSRP: $28,090
Five-year cost of ownership: $47,084
Depreciation: $13,808
Interest and opportunity cost: $9,730
Fuel: $10,279
Maintenance and repairs: $3,002
Insurance: $8,285
Taxes and fees: $1,980

Half the models on this least expensive to own list wear lower sticker prices than the Acura TSX. But after five years, this sporting sedan ends up the most economical. Acura's reputation for vehicle reliability helps hold up resale value, so that the TSX depreciates just 49 percent over five years — the lowest depreciation among the 10 luxury cars that consume cash most lightly. It also boasts the lowest maintenance and repair expenses among these 10 lowest cost luxury models.
(C)Forbes

Most Affordable Luxury Cars

Entry-level luxury cars offer most of the bells and whistles of higher-end models, but at a reasonable price.

Preparing to plunk down $61,715 on a brand-new Lexus LS 460? Save your money. Instead, buy a $30,000 IS 250. Toss in another $5,000 worth of options, and you get the prestige of the Lexus plus many of the same bells and whistles, including heated and ventilated front seats, bi-xenon headlights and an optional sound system that includes a DVD player.

Call it the trickle-down theory of economics for cars. For a fraction of the price of their more expensive counterparts, entry-level models are getting top-of-the-line features.

Consider the 2008 Cadillac CTS. It allows customers (with some options) to play music off an iPod, a memory stick, a CD, satellite radio or terrestrial radio. It even allows the customer to pause and rewind live radio broadcasts.

The $32,500 (estimated) car, which goes on sale in August, also boasts an innovative "infotainment" system that uses several digital formats. Besides music, the dashboard system can play DVD movies when parked. The optional navigation system runs off the car’s hard drive, as opposed to a removable DVD or CD-ROM. As technology improves, customers will someday be able to download updates wirelessly.

It makes sense that starter luxury cars are increasingly being outfitted with top-of-the-line features, says George Peterson, president of Tustin, Calif.-based auto industry consulting firm AutoPacific.

"Entry-level luxury cars need to demonstrate the capability of their brand — just as the more premium entries do," he says. "As more and more has been added at the top of the pile... these features become expected as part of the standard [or typical] feature load of even the lowest level luxury-brand vehicle."

Examples for the mechanically inclined include: six-speed manual transmissions or automatic transmissions with up to seven speeds that you can shift manually if you want.

To get more than four automatic gears or to shift your automatic manually, you used to have to buy a Porsche with a Tiptronic transmission, or a six-speed BMW, or even a Ferrari, with Formula One racing-style "paddle" shifters mounted on the steering wheel.

Technical Touches

But as much as transmissions have improved, nothing is trickling down faster in this digital age than electronic gizmos, especially car stereos, and new-and-improved navigation systems.

It takes three to five years for automakers to make substantial changes to the car itself, but the lifecycle for electronics gear can be six months long, says J. Ferron, automotive partner at PricewaterhouseCoopers in Detroit.

"So there's an eight times shorter cycle [for electronics]," Ferron says. "There’s a collision between that and what’s shaped in the marketplace in terms of customer expectations versus what a car can do."

Some of the vehicles on this list can have 10 or more audio speakers, as much wattage as an in-home system, half a dozen ways to download and swap music between formats, plus many different ways to control it — buttons on the dash, buttons on the customer's MP3 device, buttons on the steering wheel or even voice control.

Sounds great, but keep in mind that "entry level" is a relative thing. The most expensive car on our list is the redesigned 2008 Porsche Cayenne, at $44,295 (including required $895 delivery). That’s not cheap, but it's the least-expensive Porsche. All the cars (and two trucks) here are the least-expensive new models offered by their respective luxury brands. Since it’s nearly fall, most are already 2008 models, but a few are 2007s, pending model year changeover.

The least expensive overall is the little Volvo C30, an all-new 2008 model, at $23,395 (also including delivery). Even so, it comes standard with a six-speed manual transmission, a feature that once was found only on high-end BMWs.

"These entries today need to be fully featured and are," says Peterson. "They need to support their brand identity and mostly do."

Audi A3 2.0T
Starts at $25,340

The 2007 A3 has several features that once were found exclusively on more expensive cars, like a six-speed manual transmission; an optional six-speed automatic, which can be shifted manually; and electronic brake-force distribution to reduce skids. Thanks to turbocharging, the A3's standard four-cylinder engine produces 200 horsepower. Optional upgrades include a more powerful six-cylinder engine with Audi Quattro all-wheel drive.

BMW 328i
Starts at $33,175

The least-expensive BMW--until the 1 Series lands next year--the 2007 328i has a 230-hp, six-cylinder engine. A six-speed manual transmission is standard. The optional six-speed automatic has a "Steptronic" mode, for manual gear selection without a clutch. High-tech brakes include Brake Standby, which almost but not quite applies the brakes when the driver suddenly lifts off the accelerator pedal, anticipating hard braking.

Cadillac CTS
Starts at $32,500 (estimated)

Sales of the 2008 model start in September.

The 2008 CTS, with a 304-hp, 3.6-liter V-6 engine, is a redesigned model. Its innovative "infotainment" system uses several digital formats. Besides music, the dashboard system can play DVD movies when parked. The optional navigation system runs off the car's hard drive, as opposed to a removable DVD or CD-ROMs. As technology improves, customers will someday be able to download updates wirelessly.

Infiniti G37
Starts at $32,000 (estimated)

Sales of the 2008 model start in August.

The G37 Coupe, with a 330-hp V-6 engine, replaces the 2007 G35. Optional features include advanced four-wheel active steering, where the rear wheels help steer the car. Like the Cadillac CTS, the optional navigation system shows "3-D" landmark buildings. And like some more expensive cars, the G37 has optional "intelligent cruise control," which, within limits, maintains a set distance to the vehicle ahead.

Jaguar X-Type 3.0
Starts at $34,995

X-Type sales are down more than 40% year to date through May, but the entry-level 2008 model Jag has its fans. The X-Type has standard all-wheel drive, which is unusual but "trickling down" among luxury cars. Other upscale features include electronic brake force distribution to prevent skids, wood trim and a 120-watt sound system.


Land Rover LR2
Starts at $34,700

The smallest Land Rover is an all-new 2008 model, with a 230-hp, 3.2-liter V-6 engine. Like its bigger siblings, it can "wade" across streams up to about 20 inches deep. Its six-speed automatic transmission has different settings for different slippery conditions. The LR2 isn't exactly roughing it, however: It has a nine-speaker, 320-watt audio system with an MP3 plug-in.

Lexus IS 250
Starts at $30,970

The 2007 Lexus IS 250 has a once-rare six-speed manual transmission, plus a 204-hp, 2.5-liter V-6 engine. An optional luxury package includes features that were scarce a few years ago, like heated and ventilated front seats; bi-xenon headlights; adaptive headlights, which redirect the beam of light around a corner for better visibility. An optional sound system includes DVD-audio and DVD-video playback.

Lincoln MKZ
Starts at $29,305

The 2008 MKZ on sale now has a powerful, 263-hp V-6 engine and a size advantage over some of its entry-level competitors. Options include a thumping 600-watt, 14-speaker audio system.




Mercedes-Benz C300
Starts at $31,975

2008 model goes on sale August 7.

The 2008 C300 Sport Sedan, the first all-new C-Class since 2000, has a 228-hp, six-cylinder engine. (There is also a slightly pricier "Luxury" variant.) Features from the flagship S-Class include a computer hard drive for the optional navigation system. "Selective damping" debuts first on the C-Class. It automatically provides a stiffer ride in sporty driving and a softer, smoother ride for highway cruising.

Porsche Cayenne
Starts at $44,295

The 2008 Cayenne, on sale now, is a new generation of the Porsche SUV. The priciest vehicle on our list is the third most powerful (after the Cadillac CTS and Infiniti G37), with a 290-hp, 3.6-liter V-6 engine. It goes from zero to 60 mph in 7.5 seconds, one second faster than the old Cayenne. Bi-xenon headlights are standard.


Saab 9-3
Starts at $26,995

The Saab 9-3 2.0T Sport Sedan has a 210-hp, turbocharged, 2.0-liter four-cylinder engine.

A six-speed manual transmission is standard. A five-speed automatic with manual shifting capability is optional. A 150-watt, seven-speaker audio system is standard. A nine-speaker Bose system is optional. Like most luxury cars, even entry-level ones, anti-lock brakes, traction control and stability control are standard.

Volvo C30
Starts at $23,395

Even the cheapest of our entry-level luxury cars has a six-speed manual transmission standard. Volvo calls the base model "Version 1.0." The upgraded model is "Version 2.0." A five-speed automatic with manual-shifting capability is optional. A turbocharged, five-cylinder engine previously shared with some of the bigger, more expensive models produces 227 hp. A glass hatchback is probably the single most distinguishing feature.
(C)Forbes

Luxury car, but crummy bumper

Insurance group's low-speed crash tests reveal weaknesses in cars' first line of defense.

In tests designed to replicate low-speed impacts, the bumpers of several luxury cars failed to prevent costly damage. In one case, a Mercedes-Benz C-class sedan sustained almost $5,500 in damage when hit in its front bumper at a speed of just 6 miles per hour.

The Insurance Institute for Highway Safety conducted four separate low-speed impact tests on 11 popular luxury cars.

The cars struck a barrier, designed to mimic the bumper of another car, straight-on from the front and from the rear at six miles per hour and diagonally into front and rear corners at three miles per hour. The Institute, a private organization funded by insurance companies, estimated repair costs after each test.

"[W]hat the test results don't reflect is the Mercedes-Benz holistic approach to occupant safety," Mercedes-Benz said in a statement. "This philosophy influences design and development even down to the front bumper, which is specifically mounted lower to help reduce injury for impacts with pedestrians (to avoid contact above the knee)."

The C-class performed poorly in large part because its front bumper slid down below the impact barrier during the test.

The vehicle sustaining the most total damage was the Infiniti G35, made by Nissan, which had total estimated repair costs of $14,000. In the straight-on front impact test alone, the G35 sustained $5,223 in damage.

"The cost of vehicle ownership and repair are important considerations at Infiniti," Nissan said in a statement. "We design each new model to resist low-speed collision damage and will continue to work closely with major insurance companies to keep premiums low for our customers."

The Insurance Institute's tests do not reflect likely real-world results, Nissan said.

The best-performing vehicle in the test was the Saab 9-3. Its total estimated repair costs for all four tests was $5,243, less than what the Mercedes-Benz would have cost to fix after just one front impact.

The Institute wasn't enthusiastic about even the Saab's performance in these tests, however.

"There's nothing exemplary about even the best performer, the Saab 9-3," said vice president Joe Nolan in a statement. "It simply avoided racking up the most damage in any single test and ended up coming out the best in a mediocre lot."

Saab said in a statement that it was proud of the 9-3's top-ranked performance in these tests.

In an earlier round of tests, released in early March, midsize non-luxury cars didn't fare much better. A Nissan product was the worst performer in those tests as well with the Nissan Maxima suffering a total of $9,051 worth of damage.

Many luxury and non-luxury cars suffer from the same problems, according to the Institute: bumpers that are simply too weak, impact absorbing structures that don't extend far enough to the corners and bumpers that are designed with visual appeal rather than damage control as the top priority.

Underneath body-colored plastic exteriors, most bumpers have metal beams that are supposed to absorb crash forces. These beams can be too weak or not placed where needed to adequately protect against various types of impacts.

In some cases, the Institute said, car bumpers can slide under the bumper of another vehicle during an impact, exposing headlights, grills and body sheet metal to damage.

Luxury cars have the additional problem of expensive replacement parts. A headlight for a Lexus ES costs $1,046, according to the Institute. (Headlights were damaged in 15 or the 22 front impact tests the Institute conducted.) The front bumper cover for an Audi A4, one of the best performing vehicles in the tests, costs nearly $600, according to the Institute. That doesn't include installation and painting costs.

Luxury car bumper tests

Estimated repair costs following Insurance Institute for Highway Safety bumper tests

Test Front full width Front corner Rear full width Rear corner Total damage Saab 9-3 $1,476 $1,076 $1,722 $969 $5,243 Audi A4 $976 $2,038 $918 $1,899 $5,831 Lincoln MKZ $1,001 $1,966 $2,330 $669 $5,966 BMW 3-series $3,658 $1,256 $989 $778 $6,681 Acura TSX $1,693 $1,274 $3,430 $1,157 $7,554 Volvo S60 $4,517 $543 $2,142 $1,022 $8,224 Lexus IS $4965 $2,223 $1,922 $737 $9,577 Lexus ES $3,921 $2,093 $3,709 $1,101 $10,824 Mercedes-Benz C-class $5,486 $963 $3,728 $877 $11,054 Acura TL $4,985 $1,244 $3,814 $1,156 $11,199 Infinit G35 $5,223 $3,544 $4,035 $1,181 $13,983

(C)CNN

Top 10 Most Expensive (TCO) Vehicles to Own

The 10 vehicles with the highest overall cost of ownership are top-drawer luxury models, but that doesn't mean that lower-priced vehicles are necessarily a better value.

True, the more affordable the car, the less cash it gobbles up overall. But digging into cost-of-ownership data from Vincentric, a firm that tracks vehicle lifecycle expenses for car dealers, manufacturers and others, shows that the five-year lifecycle costs of the 10 most expensive vehicles to own are lower multiples of their base prices than models that cost less.

Take two examples: the 2007 BMW M6 Convertible, with a manufacturer suggested retail price (MSRP) of $104,900; and the 2007 Audi A3, with a $25,340 MSRP. The pricier BMW M6 Convertible is fourth on our list and is more expensive to own than the Audi A3, which is among the 10 least expensive luxury vehicles to own. But the M6 Convertible’s cost of ownership after five years is $150,565, less than 1.5 times the car’s base price; whereas the A3’s five year total cost of ownership of $51,513 is more than two times the vehicle’s base price.

The lesson: If you sink more than $100,000 into a car, each of those dollars stretches farther over time. That's largely because high-end cars tend to hold their value better than regular vehicles. But remember, you’re still shelling out more money for the pricier car.

Breaking Down Ownership Costs

After five years, the total cost of owning a vehicle can tally more than twice the original price paid at purchase time, even with a trade-in to soften some of the upfront expense. Depreciation is the largest single cost incurred; others include interest on loans, insurance premiums, taxes and other fees. Cars also consume investment income that could otherwise be accruing interest in bank or brokerage accounts. Then there are maintenance and repair costs and, lastly, cash for fuel.

We determined the Top 10 Most Expensive Vehicles to Own using Vincentric data. The company calculates total cost of ownership (TCO) over five years using six variables: depreciation, interest and opportunity costs, fuel, maintenance and repairs, insurance, and taxes and fees. The ranking includes 2007 models only.

Vincentric breaks down ownership costs for every variation within a model line. Consider the Mercedes-Benz CL-Class coupe, the most expensive car to own and No. 1 on the list. Vincentric computes separate lifespan costs for the CL550 and CL600, the two versions sold by Mercedes. The ownership costs shown in the slideshow are model-line averages of Vincentric's breakdowns.

For luxury cars with very high sticker prices, depreciation claims more money than it does for mass-market models that cost a lot less to begin with. That's true even for luxury models that retain their value very well.

Over five years, the Porsche 911 GT3 — the tenth most expensive car to own — depreciates just 41 percent from its starting MSRP. By contrast, the Lincoln MKZ, the 10th least expensive-to-own luxury model, sheds about 67 percent of its base price. But the MKZ sells for around $30,000, compared to $106,000 for the 911 GT3. Sixty-seven percent of $30,000 is a lot less than 41 percent of $106,000 — that works out to $20,100 versus $43,460, respectively.

Higher-priced cars also run up higher costs in other categories, says David Wurster, Vincentric president. For example, you pay more in taxes when your car costs more. Insurance premiums typically run higher, too, he says.

The Intangibles

Cost of ownership calculations measure monetary value only. Luxury models that demand more dollars for care and fuel pay more in image and prestige.

“We don't buy cars just for transportation,” says Michael Calkins, who follows ownership costs as manager of approved auto repair at the national headquarters of AAA. “We buy them to make a statement about who we are and where we are in the socio-economic spectrum.” Status and style are intangible, ego-driven elements of car ownership. “Everyone has to put his or her own value on that,” Calkins says.

Car buyers torn between luxury and frugality can balance the two by avoiding special editions and super-speedy versions of high-line models, Calkins says. “You end up taking a huge hit on those. I would love to have an AMG model [by Mercedes], but the standard model is a much better financial purchase,” he says.

Mercedes’ high-performance AMG versions suffer more depreciation because of their stratospheric prices. Insurance also costs more for these models. Even tire expenses will likely consume more funds, Calkins says. Not only are the larger, wider tires found on AMG and other high-performance models inherently more expensive than standard ones, but if they’re high-speed rated, then they wear faster and drive ownership costs up even more.

Vincentric updates cost-of-ownership estimates monthly. The figures here are from late May 2007. Interest expenses assume a five-year loan at 6.86 percent with a 15 percent down payment. Opportunity costs consider what owners would have made if car expenses went into certificates of deposit instead. Insurance costs are for a typical driver under age 65, with a clean record. Vincentric used the EPA's 2007 Fuel Economy Guide to calculate fuel costs.

Our ranking does not include exotic sports cars and ultra-luxury sedans produced in limited numbers. Vincentric doesn't track them, in part because buyers of these rare cars aren't as interested in total ownership costs, Wurster says. “The vehicles we're talking about are day-to-day driving vehicles. Even if it's a $150,000 Mercedes, people are still driving it,” he says.

Ten Most Expensive Vehicles to Own

10: Porsche 911 GT3
Starting MSRP: $106,000
Depreciation: $53,467
Interest and opportunity cost: $31,268
Fuel: $13,211
Maintenance and repairs: $5,523
Insurance: $19,025
Taxes and fees: $6,964
Five-year cost of ownership: $129,458

Although not as potent as the 911 Turbo also on this list, the 911 GT3 is designed for serious racetrack use. And with a proportionally lower price than the 911 Turbo, the 911 GT3 requires fewer dollars to maintain and drive. It also retains its value rather well, depreciating just 50 percent over five years. So even with a lofty base price of $106,000 — the third highest on this list — it costs the least to own among these pricey luxury models.

9: Audi S8
Starting MSRP: $92,000
Depreciation: $62,840
Interest and opportunity cost: $28,147
Fuel: $15,020
Maintenance and repairs: $5,215
Insurance: $17,353
Taxes and fees: $7,793
Five-year cost of ownership: $136,368

Audi is the only brand with vehicles in both the top and bottom 10 for cost of ownership. The large, fast, technology-laden S8 makes the most expensive list mostly because of high depreciation — 68 percent over five years — that substantially erodes a lofty base price. At the other end of the spectrum, the Audi A3 hatchback likewise depreciates rapidly, but a substantially lower purchase price holds down the A3's total ownership costs, making it one of the 10 least costly luxury cars to own.

8: Mercedes-Benz G-Class
Starting MSRP: $83,700
Depreciation: $59,848
Interest and opportunity cost: $28,913
Fuel: $19,183
Maintenance and repairs: $5,375
Insurance: $17,783
Taxes and fees: $6,212
Five-year cost of ownership: $137,314

The military-inspired G-Class is the only SUV to make this list. Mercedes sells two versions of this luxurious off-roader that’s usually seen planted firmly on-road. The high-performance G55 AMG version raises the model's average cost of ownership considerably, and depreciation hits the G-Class hard, consuming an average of 71 percent of the model line's starting price over five years. This un-aerodynamic, heavy SUV also costs more to refuel than any car on the list.

7: BMW M6 Coupe
Starting MSRP: $99,100
Depreciation: $62,586
Interest and opportunity cost: $30,357
Fuel: $18,313
Maintenance and repairs: $5,349
Insurance: $18,201
Taxes and fees: $9,459
Five-year cost of ownership: $144,265

The BMW M6 Coupe is so intimately related to the M6 Convertible that their five-year costs for fuel, maintenance and repairs are identical. But the hardtop version lands three spots lower on this list because it costs $5,800 less. It depreciates at nearly the same rate as the convertible, but that depreciation claims a smaller sum. Its lower purchase price also demands lower finance fees, thus stealing less cash from other potential investments.

6: Porsche 911 Turbo
Starting MSRP: $122,900
Depreciation: $66,771
Interest and opportunity cost: $35,557
Fuel: $12,551
Maintenance and repairs: $5,622
Insurance: $21,045
Taxes and fees: $8,028
Five-year cost of ownership: $149,574

The 911 Turbo is the most expensive 911 variant sold by Porsche, as of publication time, and has the highest starting price on our list. It's also the fastest, with a 0-60 mph time of 3.9 seconds. Surprisingly, the 911 Turbo has the lowest five-year fuel cost of the list, $12,551.

5: BMW Alpina B7
Starting MSRP: $115,000
Depreciation: $67,409
Interest and opportunity cost: $33,868
Fuel: $14,538
Maintenance and repairs: $5,047
Insurance: $20,100
Taxes and fees: $8,847
Five-year cost of ownership: $149,809

The rare Alpina B7 is the highest-priced BMW among the three on this list, and the second-highest priced overall, second only to the Porsche 911 Turbo. It costs $10,000 more than the M6 Convertible, but that car depreciates more swiftly, losing 62 percent of its base price in five years, as opposed to the B7’s 59 percent loss. By holding its value better and consuming less fuel through its lifetime, the Alpina just edges out the M6 Convertible in five-year total cost of ownership.

4: BMW M6 Convertible
Starting MSRP: $104,900
Depreciation: $65,416
Interest and opportunity cost: $32,054
Fuel: $18,313
Maintenance and repairs: $5,349
Insurance: $18,895
Taxes and fees: $10,538
Five-year cost of ownership: $150,565

The M6 Convertible is the last of three pricey, high-performance, low-volume BMWs to make the list. Fuel cost is its most conspicuous downfall. At $18,313 over five years, the M6 Convertible ties with its M6 Coupe twin for the second-worst fuel efficiency on the list, eclipsed only by the Mercedes-Benz G-Class. All that fuel returns low 0-60 mph times: 5.0 seconds for the convertible and 4.6 seconds for the coupe.

3: Mercedes-Benz SL-Class Convertible
Starting MSRP: $94,800
Depreciation: $75,060
Interest and opportunity cost: $37,639
Fuel: $16,461
Maintenance and repairs: $5,874
Insurance: $22,535
Taxes and fees: $10,634
Five-year cost of ownership: $168,203

The top-shelf AMG versions of Mercedes’ SL-Class boost average cost of ownership for all SL version, particularly the priciest and fastest SL65 AMG. With that variant out of the equation, the ownership costs for the remaining three SL models — the SL550, SL55 AMG and SL600 — average out to $150,895. But even with five-year costs totaling a lofty $220,128, the SL65 AMG receives a “good” value rating from Vincentric when compared to other brutally expensive cars in its category.

2: Mercedes-Benz S-Class Sedan
Starting MSRP: $85,750
Depreciation: $82,368
Interest and opportunity cost: $36,661
Fuel: $15,807
Maintenance and repairs: $5,130
Insurance: $21,161
Taxes and fees: $10,003
Five-year cost of ownership: $171,130

Like the two Mercedes models that fall before it on this list, the S-Class expenses run high because its ultra-high performing AMG version elevates the average cost of ownership for the entire car line. Considered alone, the S65 AMG Sedan duns its owners for an astonishing $243,491 over five years. If you took it out of the mix, the other three S-Class versions sold by Mercedes — the S550, S550 with 4Matic all-wheel drive and S600 — would cost owners an average of $147,010 after five years.

1: Mercedes-Benz CL-Class Coupe
Starting MSRP: $99,900
Depreciation: $83,703
Interest and opportunity cost: $36,076
Fuel: $16,370
Maintenance and repairs: $5,359
Insurance: $20,940
Taxes and fees: $11,816
Five-year cost of ownership: $174,264

Four models in this list have starting prices higher than the Mercedes-Benz CL-Class. But after five years of ownership, the CL-Class swallows more dollars than any mass-produced vehicle you can buy. That's because pricier models — the BMW Alpina B7, M6 Convertible and the Porsche 911 GT3 and Turbo — all hold resale value far better, thereby depreciating less than the CL-Class.
(C)Forbes

Top 10 Off-Road Luxury SUVs

Ironically, some of the most luxurious and expensive SUVs are the best equipped for dirty off-road duty — not that most drivers will ever test these capabilities.

Even though most drivers would shudder at the thought, some of the priciest, most luxurious SUVs relish trouncing through mud, bounding over boulders and powering up steep inclines. Think of them as well-mannered brutes, frustrated for lack of opportunity to display their brawn.

As car buyers abandon truck-based SUVs for car-based ones — called “crossovers” by industry insiders — to gain more on-road comfort and capability, it’s the costlier truck-like models that continue to flaunt true rock-crawling abilities. (Click here to read about the difference between car- and truck-based SUVs.)

“This is the carryover from the idea that any ‘real’ SUV had to be able to get to the top of the mountain with its 4x4 system,” says George Peterson, president of AutoPacific Group, a California-based automotive research firm. In many ways, this makes a luxury SUV the vehicular equivalent of costly professional-quality stove and oven ranges sold to wealthy people who don’t cook much but would like to think they have the tools to whip up a gourmet meal if the need ever arises.

“Substantially less than 10 percent [of luxury SUV owners] indicate that they actually go off-roading,” says AutoPacific’s Peterson. “We actually think that the percentage that actually off-roads is less than 5 percent, but we have to go with what the owners report.”

While some lower-cost SUVs like the Jeep Wrangler and Nissan Xterra boast the largest percentage of “real” off-roader enthusiasts — Jeep says 60 to 80 percent of Wrangler owners take their vehicles to the trails — some large luxury models are equipped to tackle tough terrain. “The price of a Land Rover has always been higher than many other four-wheel-drive vehicles, based not just on luxury but on capability,” says Bob Burns, off-road events manager for Land Rover North America. “Range Rover customers want to buy the best and want to experience what their vehicles are built to do.” Go to the Land Rover Showroom to compare prices for different models.

Land Rovers have the highest off-road penetration among luxury SUVs, with 26 percent of all LR3 owners engaging in “real” off-roading, and 22.2 percent of all Range Rovers and 14.8 percent of Range Rover Sport drivers occasionally leaving the pavement. By contrast, the study found that no Cadillac Escalade EXT, Infiniti QX56 and Volvo XC90 owners ever venture off-road. (See the chart below for more data.)

Defining 'Off-Road'

How motorists define off-road driving affects those numbers. “Off-road for some of these folks could be in the shopping mall parking lot,” Peterson says. “We try to get at that by differentiating ‘real off-roading’ with ‘getting to fish/camp/hike sites’ in our study.” In other words, AutoPacific defines “real” off-roading as driving on rugged off-road trails, versus merely traversing a dirt or gravel path to access a fishing, hiking or camping site, for instance.

“The definition of ‘off-road use’ varies greatly, and we’re OK with that,” says Land Rover’s Burns. “Some customers consider it to be the snowy driveway to the ski house, while others may well define it as scaling the Sierra Nevada mountain range.”

Industry analysts agree that among all luxury SUV brands, Land Rover does the best job of creating an active community of off-roaders. For starters, most dealerships maintain their own off-road test courses, which can range from a simple hill climb to a full-blown facility for buyers to test their vehicles’ mettle and their own fear threshold. Beyond that, Land Rover dealers help make sure their customers have access to an assortment of off-road events and excursions.

“Our owners have the option of learning how to drive their vehicles off-road at a driving school, a retailer-organized event, or they can take a dive off the deep end by signing up to attend a Land Rover Adventure,” Burns says.

SUVs have been around for decades, arguably starting with limited but growing enthusiasm for truck-based station wagons post-WWII that were generically called “Suburbans” (long before Chevrolet trademarked the name. Luxury SUVs are a more-recent phenomenon. Born out of the SUV boom in the 1990s, today every mainstream luxury brand except for Jaguar offers at least one SUV.

Kings of Off-Road

Vehicle	Percent of owners who drive off-road
Acura MDX	1.4%
BMW X3	7.4%
BMW X5	4.3%
Cadillac Escalade	2.2%
Cadillac Escalade EXT	0.0%
GMC Yukon XL	6.1%
Infiniti FX	2.2%
Infiniti QX56	0.0%
Land Rover LR3	26.0%
Land Rover Range Rover	22.2%
Land Rover RR Sport	14.8%
Lexus GX 470	6.1%
Lincoln Navigator	9.1%
Mercedes M-Class	3.1%
Porsche Cayenne	10.5%
Subaru B9 Tribeca	3.5%
Volkswagen Touareg	9.8%
Volvo XC90	0.0%
Average Luxury SUV	7.15%

What to Look for

There are some basic parameters that every SUV must have for serious off-road duty. Primary among them is a four-wheel-drive system with low-range gearing that enables a slow crawl often needed to negotiate rough terrain.

Other important specifications include ground clearance, approach and departure angles, and fording depth. Go to the next page for definitions of these terms. A host of expensive accessories are available to improve off-road performance and safety. But instead of focusing on expensive add-ons, like brush guards and winches, those serious about off-roading should invest in training, off-roading expert Pietschmann says.

“The main thing you want to have when you’re off-roading is a prepared driver,” he says. “Ninety percent of everything off-road has to do with the driver — only 10 percent depends on the equipment.”

Bill Burke, an off-road driving instructor who runs 4-Wheeling America, in Fruita, Calif., stresses that drivers should adhere to the “three Ps” of off-roading:

• Patience – Drive slowly enough to be able to gauge the terrain and react accordingly.

• Planning – Stop and decide exactly how to negotiate an obstacle rather than just plow forward without a plan.

• Practice – Learn the capabilities of your vehicle and its equipment in safe surroundings before setting out to conquer a remote trail.

It’s also imperative to always be mindful of how the vehicle will impact the environment, Burke says. “Treat the outdoors where you drive like your own home — take care not to damage it or clutter it." Land Rover's motto of “tread lightly” encapsulates this idea.

Prior to the SUV boom of the 1990s, most SUVs were referred to as “four-by-fours,” expressed as “4x4s,” by virtue of four-wheel-drive systems that imbued them with nearly superhuman off-road and foul-weather abilities. Back then you had to get out of the truck and manually “lock” the front wheel hubs to send power to all four corners, however. Today’s 4x4 systems are much more sophisticated and come in several varieties, each of which is skewed more toward either off- or on-road use.

Here’s a quick rundown of the various similarities and differences between the competing types of systems:

• Part-Time 4WD: Typically the most-basic type of 4WD system found on the least-expensive models; the engine powers only the rear axle until the driver pushes a button or shifts a lever to engage the front wheels. Vehicles with this system include the Jeep Wrangler and Nissan XTerra.

• Full-Time 4WD: A driver can choose between rear-drive, 4WD and an “automatic” mode that engages the front wheels as needed when sensors detect wheel slippage. This system typically affords the best compromise between on- and off-road use. Vehicles with this system include the Chevrolet Tahoe and Ford Expedition.

• Permanent 4WD: Found on many higher-priced SUVs, this includes the automatic system mentioned above, but doesn’t offer two-wheel-drive. To some degree, all four wheels receive power at all times. Such systems may or may not include low-range gearing for extreme off-roading. Vehicles with this system include the Hummer H2 and Land Rover Range Rover.

• All-Wheel Drive: Similar to permanent 4WD and available on most car-based “crossover” SUVs and a few truck-based SUVs. AWD not only boosts traction, but also can improve cornering abilities on-road. Some systems vary the amount of power sent to each wheel, individually. Unlike 4WD, however, no low-range gearing is included, which means the system is not intended for serious off-roading. Vehicles with this system include the Buick Enclave, Cadillac Escalade, Lexus RX 350 and Mercury Mountaineer.

Some automakers will refer to their car-based SUVs as having 4WD, when really they’re equipped with AWD. This is a marketing ploy to create a burly image. The rule of thumb is that if it doesn’t include a switch or lever to engage low gear, it’s not a true 4WD system.

About Our Ranking

In our top 10 list of luxury off-road SUVs, we’ve listed the models retailing for $30,000 or more that we feel are the most rugged, based on a combination of personal experience, published performance reports and the manufacturer’s specifications.

We’ve included a few critical specs in that regard for each model on the list: ground clearance, approach and departure angles, and fording depth (see below for definitions of each). Sometimes these numbers are expressed as a range because the measurements either differ from version to version within a particular model line — given different suspension systems, tires and so on — or vary because of features like an adjustable-height suspension. We’ve also included a list of off-road enhancements available as factory options for each ranked model, though separate dealer-installed accessories may also or alternately be offered.

Definitions

• Ground clearance: One of the key specs for those looking to take an SUV off-road, ground clearance refers to the space between the lowest point on a vehicle’s chassis and the ground beneath it. The higher the ground clearance, the less likely the underbody and associated components will sustain damage over rocky and uneven terrain. Generally, this is measured from a point under the differential housing, though on some models this may not actually be the lowest spot, so bring a tape measure with you if you’re serious about comparing various models’ ground clearances. A serious down side to having higher ground clearance is the resulting higher center of gravity, which adversely affects the vehicle's on-road handling and makes it more susceptible to rollovers. Many luxury SUVs offer suspensions that can be lowered for highway use and raised for added off-road clearance at the push of a button.

• Approach angle refers to the steepest incline angle a vehicle can drive up from a flat surface without damaging the front bumper or undercarriage.

• Departure angle is like the approach angle for the back of the vehicle. It refers to the degree of incline a vehicle can negotiate without having the rear bumper or other overhang scrape.

• Fording depth represents the maximum depth at which an off-road vehicle can operate in water. Fording depth is important if you plan to cross creeks and streams along a trail.

10. Volkswagen Touareg
The Touareg hasn't been a big seller, despite being both luxurious and capable. It shares some components with the Porsche Cayenne. A standard 4Motion permanent AWD system enables the Touareg to scale a 45-degree grade; a sophisticated suspension gives relatively responsive on-road handling. Three engine choices include a 310-hp 5.0-liter V10 turbodiesel that generates 553 pound-feet of torque for extreme pulling and climbing power. A freshening later this year will rechristen it the Touareg 2.

Off-Road Specs:
Ground Clearance: 6.3-11.8 inches
Approach Angle: 28-33 degrees
Departure Angle: 28-33 degrees
Fording Depth: 19.7-22.8 inches

Off-Road Options:
Rear Locking Differential ($700)



9. Lexus GX 470
Introduced as a smaller and lower-cost alternative to the LX 470, the GX 470 is essentially a luxury version of the Toyota 4Runner with a V8 engine. A full-time 4WD system is standard, the vehicle's ActiveTRAC technology is able to apply the brakes to a slipping wheel while transferring the engine's power to wheels with better traction. An optional Kinetic Dynamic Suspension System hydraulically controls a set of oversized front and rear stabilizer bars to further enhance its trail response.

Off-Road Specs:
Ground Clearance: 8.3 inches
Approach Angle: 31-30 degrees
Departure Angle: 25-29 degrees
Fording Depth: N/A

Off-Road Options:
Kinetic Dynamic Suspension System ($1,750)



8. Porsche Cayenne
After taking the 2007 model year off, the Porsche Cayenne is updated and reintroduced as an early-2008 entry. As before, it's offered in 290-hp base, 385-hp S and 500-hp Turbo S models, the latter of which boasts the best off-road specs, but is priced just short of $100,000. The Cayenne's sophisticated 4WD system can send up to 100 percent of the vehicle's traction to the front or rear axle if needed. The available Porsche Dynamic Chassis Control (PDCC) system limits vehicle roll on pavement through corners and enables maximum axle articulation and improved traction off-road.

Off-Road Specs:
Ground Clearance: 8.6-10.7 inches
Approach Angle: 28.6-31.8 degrees
Departure Angle: 22.8-25.4 degrees
Fording Depth: 19.7-21.9 inches

Off-Road Options:
Fire Extinguisher ($140); Off-Road Technology Package ($2,640; includes rear differential lock, rocker panel protection, additional skid plates and undercarriage protection); Porsche Dynamic Chassis Control ($3,510); Sportdesign Package with Off-Road ($3,395; includes front and rear lower bumper covers, extended roof spoiler and rocker panel extensions, front and rear stabilizer bars that can be disconnected hydraulically, rear differential lock, additional skid plates and undercarriage protection, headlamp washers, additional tow lug)



7. Mercedes-Benz G500
Derived from a German military vehicle designed in the 1970s, the G500 soldiers on as an unabashedly boxy, low-volume, high-priced and somewhat eccentric luxury SUV. While it offers a comfortable cabin, the G500 remains rugged and is one of the few SUVs of any kind to offer three separate locking differentials for exceptional off-road aptitude. Its 292-hp V8 engine has to work hard to move the un-aerodynamic bulk with authority; the G55 AMG version includes a much-quicker 469-hp supercharged V8, but at a steep price.

Off-Road Specs:
Ground Clearance: 8.3 inches
Approach Angle: 36 degrees
Departure Angle: 27 degrees
Fording Depth: 19 inches

Off-Road Options:
N/A



6. Lexus LX 470
Lexus' upscale version of the venerable Toyota Land Cruiser excels as a posh off-road adventurer, thanks to a hardy, full-time 4WD system that features a locking center differential and four-wheel traction control. A height-adjustable adaptive suspension provides added ground clearance for off-road use. While the 2007 model's 4.7-liter V8 is rather meek at 268 hp, the vehicle will receive a more-powerful 381-hp 5.7-liter V8 engine with its 2008 redesign, which will prompt a name change to the LX 570.

Off-Road Specs:
Ground Clearance: 9.8 inches
Approach Angle: 30-32 degrees
Departure Angle: 23-26 degrees
Fording Depth: N/A

Off-Road Options:
N/A



5. Land Rover Range Rover Sport
This big SUV is sporty by SUV standards, thanks largely to well-balanced handling and strong engines (300-hp V8 or 390-hp supercharged V8). However, the Range Rover Sport can be just as entertaining on the trails. It shares the LR3 and Range Rover's low-range 4x4 gearing, lockable center differential and the Terrain Response system that maximizes performance according to five settings that correspond to different road conditions; three of which are off-road (mud, sand and rocky surfaces).

Off-Road Specs:
Ground Clearance 7.4-9.6 inches (front); 7.9-10.0 inches (rear)
Approach Angle: 30.2-34.0 degrees
Departure Angle: 26.0-29.0 degrees (with spare tire); 13.9-16.9 degrees (with tow bar)
Fording Depth: 27.6 inches

Off-Road Options:
Locking Rear Differential ($500); Dynamic Response Package ($2,000; includes dynamic-response suspension, Brembo front brakes)