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Audi expands use of diesel in U.S. lineup

Audi of America will begin offering 3.0-liter V6 diesel engines in the A8, A7 and A6 cars and the Q5 crossover beginning next year. The four TDI diesel-equipped models will make their debuts next week at the Los Angeles auto show. Audi already offers a diesel powerplant in the Q7 crossover but the 2013 model features an updated engine.

Long-wheelbase stretch Jeep Wrangler spied

A Jeep Wrangler JK with a third row of seating was recently spied at a suburban Detroit gas station. Wearing manufacturer plates, at first glance it looked like a prototype being tested by the Auburn Hills manufacturer. Closer inspection of the photos showed pieces from Wixom, Mich.-based American Expedition Vehicles, including bumpers and wheels with the AEV logos covered by painter's tape.

Mercedes color and trim manager on the new SL-Class interior [w/video]

Mercedes has released a video as part of the Mercedes-Benz New York Fashion Week, discussing interior design details of the new 2013 SL-Class. In the video Nicola Ehrenberg-Uhlig, manager of color and trim for Mercedes-Benz, explains the choices made when the vehicle was designed and how the design team wanted to convey the car's personality via special materials. Aviation is the theme for the new SL-Class, which in the designers' minds stood for clear design, functionality, speed and power.