The Audi A8 comes in three trims: Base, L, and L W12. It comes standard with a new more powerful engine in the 4.2L V8 producing 350 horsepower. The W12 trim increases that power with a 6.0L V12 engine with 450 horsepower. A full leather upgrade is available on A8 L models, while W12 models get the option of 20-inch wheels. Changes for 2007 include new front and rear headrests, a more powerful Bose surround sound system, a standard driver information system, a MP3 capable CD changer, and an expanded list of options. Two new exterior colors are also available, Ibis White and Phantom Black.