Needless to say, the 2010 Acura ZDX is a peculiar beast. And after a week's worth of testing, we're still not sure what to make of it.

Download Acura ZDX is a space (challenged) oddity

We use to fool ourselves into thinking that vehicles such as the gloriously beautiful Ferrari 458 Italia didn’t need any type of upgrade or styling modification whatsoever.

Download 2011 Ferrari 458 Italia by Wheelsandmore

Go ahead. Swoon over the deep burble and ample torque emanating from the 300C's big V-8. We can wait. When you're done, reality is waiting with the V-6-powered 300. Don't fret. While the base car may lack the degree of silliness that comes with a 363-horsepower family sedan, it makes up with a commonly overlooked but crucial element: value.

Download First Test: 2011 Chrysler 300 Limited

When an automaker's resources are limited, logic suggests they be diverted to the product that will deliver the greatest return. So it's not surprising that the all-new Grand Cherokee has gotten the lion's share of Jeep's attention, and its vastly improved sales results speak for themselves. For those models farther down the ladder, such as the 2011 Jeep Liberty, the changes are far less dramatic.

Download First Drive: 2011 Jeep Liberty

Every year, Jeep and Mopar hold a special event for fans of the two brands. Now on its 45th year, the Moab Easter Jeep Safari has become an annual convergence of some eye-catching Jeep concepts, all of which have been made specifically for the event.

Download 2011 Jeep Wrangler Renegade

Audi's RS division, which all but ignores the U.S. market, is keeping busy. It just released the RS3 in Europe, and next year will launch the new RS4. Most of its mechanicals come from the RS5, including a naturally aspirated V-8 engine making 444 horsepower at 8250 rpm. It feeds a crown gear center diff that's able to send torque forward or backward according to programmed maps, making the car feel oversteery and driver-sensitive. Transmission is a seven-speed S-Tronic twin-clutch. Active variable-ratio steering will be optional. The bodywork will incorporate extra aluminum compared with the regular A4's, and be available in sedan and Avant variants.

Download Audi's Future RS Car Plans Taking Shape

The 2011 Porsche Cayenne S Hybrid is dead quiet as it waits on the Inside Line test track, its start-stop mode engaged. Throttle wooded, the hybrid Cayenne's electric motor hums to life, and a fraction of a second later, the shrill roar of the supercharged, direct-injected V6 fills the air.

Download 2011 Porsche Cayenne S Hybrid Full Test

Hollywood loves a sequel, and now it's the Italians' turn. Fiat is reentering the North American market and it's promising that things are going to be different this time. The first model to arrive is the 2012 Fiat 500, a remake of the classic Cinquecento produced from 1957-'75.

Download 2012 Fiat 500 Full Test

Import trucks all have one thing in common. They aren't American. Except cases like the 2006 Mitsubishi Raider pickup, which cunningly claims dual citizenship.

Download Follow-Up Test: 2006 Mitsubishi Raider

High on a quart of coffee, we load up Alice in Chains and point the 2006 Honda Civic Si toward Vegas. The plan, if you can call it that, is to hit the Tropicana, lose money on blackjack and have a drink with a spicy stranger. It's 2 a.m. If the California Highway Patrol is on our side, we'll be broke by sun up.

Download Full Test: 2006 Honda Civic Si

Europeans have long understood that wagons don't have to be boring family trucksters. Unlike the lumbering land barges that populated U.S. highways in the '50s and '60s, sport wagons (well-equipped and usually for a premium price) can be as fun and capable as the sedans on which they are based. Add to that recipe a sophisticated all-wheel-drive system and you've got yourself a vehicle that can literally run circles around any sport-utility of similar interior dimensions (and in all weather conditions) while earning far better fuel economy.

Download Follow-Up Test: 2006 BMW 530xi Sport Wagon

The Mercedes-Benz SLS AMG Gullwing is one of the most covetable vehicles of its time, praised for its power and undeniably gorgeous looks. Despite the adoration the Gullwing receives, German tuner Hamann still decided to take on the challenge of making it even better. The result of Hamann’s efforts is the Everose Gold SLS Hamann Hawk.

Download Hamann SLS AMG Hawk Set For World Premiere at Geneva Motor Show

Wild mustangs once ran free across the plains of this great country until man came up with the idea to saddle and domesticate them. The 2006 Ford Mustang Shelby GT-H story is that of a pony car escaping to freedom, only to realize it's still wearing a saddle.

Download Follow-Up Test: 2006 Ford Mustang Shelby GT-H

The neutral auditors from TÜV Süd have attested a high degree of environmental compatibility for the new Mercedes CLS. The coupe received environmental certification in accordance with the ISO 14062 standard. This is based on a life cycle analysis of the CLS, comprising a comprehensive evaluation of the automobile’s environmental impact. The new CLS will celebrate its market launch at dealers on January 29.


Download 2012 Mercedes-Benz CLS Offers One Third Lower CO2 Emissions

At this year’s Los Angeles Design Challenge, the designers from the Mercedes-Benz Advanced Design Studios in Carlsbad, California, surprised everyone with a revolutionary vision. Taking their inspiration from nature, they designed a vehicle which is fully integrated into the ecosystem, from the moment of its creation right through to the end of its service life. The Mercedes-Benz BIOME grows in a completely organic environment from seeds sown in a nursery. Out on the road the car emits pure oxygen, and at the end of its lifespan it can be simply composted or used as building material.

Download Mercedes-Benz Biome at the Los Angeles Design Challenge

Audi might be the hottest brand among luxury carmakers—more styling-oriented and more sporty than others, but still something of an insider's tip. What the brand doesn't have is a history as rich as that of Mercedes-Benz, or even BMW. Audi can be traced back to a number of companies originating as early as 1899, but the brand, as we know it today, did not surface until the 1960s—with some rather bland cars.


Download Audi TT RS Coupe - First Drive Review