The 2011 Aston Martin V8 Vantage S is available as a 2-door, 2-seat coupe. Starting at $136,300, the 2011 Aston Martin V8 Vantage S Coupe is powered by a 4.7L , 8 -cylinder engine mated to an automatic transmission that returns an EPA estimated 14-mpg in the city and 21-mpg on the highway. The top of the line 2011Aston MartinV8 Vantage SRoadster , priced at $ 149,700 , is powered by a 4.7L , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated 14-mpg in the city and 21-mpg on the highway.