The 2008 Audi Q7 is available as a 4-door, 5-seat sport utility. Starting at $42,500, the 2008 Audi Q7 3.6 is powered by a 3.6L , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 14-mpg in the city and 19-mpg on the highway. The top of the line 2008AudiQ74.2 Premium , priced at $ 58,600 , is powered by a 4.2L , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated 12-mpg in the city and 17-mpg on the highway.