2008 Audi A8

The 2008 A8 is Audi's flagship sedan, the long-wheelbase L version that gives rear-seat passengers limousine-like room. It's a big car that shrinks around you on the highway, with Quattro grip that makes it feel planted even at triple-digit speeds. Inside, the A8 L is a quiet, leather-lined place with heated and ventilated seats, and the rear seats recline with plenty of legroom. Owners report few complaints beyond cracked seat leather and the need for premium fuel, though older Audis can have cooling system issues. The L is the only A8 offered this year, so if you want Audi's flagship sedan this is it. Its 4.2L I8 makes 350 horsepower and pairs with a six-speed automatic and all-wheel drive, good for 18 mpg combined. The adaptive air suspension soaks up bumps while keeping the big sedan flat through corners.