The Audi A8 has been with us since 1997 in the US. It's Audi's biggest sedan, and it also carries the pride of being their most luxurious sedan. Now, the A8 is in its fourth generation.

The 2007 Audi A8, which competes with the Mercedes-Benz S-Class, BMW 7-Series, and Lexus LS, boasts the advantage of its standard all-wheel-drive quattro system for improved all-weather performance ...

Audi's quattro all-wheel drive system, standard throughout the lineup, remains an asset for both all-weather handling and performance. With the addition of a diesel V6, the A8 is able to achieve ...