The 2015 Audi Q7 is available as a 4-door, 7-seat sport utility. Starting at $48,300, the 2015 Audi Q7 3.0T Premium is powered by a 3.0L , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 16-mpg in the city and 22-mpg on the highway. The top of the line 2015AudiQ73.0 TDI Premium , priced at $ 53,400 , is powered by a 3.0L , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 19-mpg in the city and 28-mpg on the highway.