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 2008 Audi A8 is separated from its competition thanks to its standard all-wheel-drive quattro system for improved all-weather performance and safety. The A8 offers an especially distinctive, ...