The 2005 Audi A8 is available as a 4-door, 5-seat sedan. Starting at $69,900, the 2005 Audi A8 L 4.2 Quattro Long Wheelbase Sedan is powered by a 4.2L, 8-cylinder engine mated to an automatic transmission that returns an EPA estimated 18-mpg in the city and 24-mpg on the highway. The top of the line 2005 Audi A8 W12 Quattro Long Wheelbase Sedan, priced at $117,400, is powered by a 6.0L, 0-cylinder engine mated to an automatic transmission that returns an EPA estimated 15-mpg in the city and 21-mpg on the highway.