The 2014 Aston Martin Vanquish is available as a 2-door, 2-seat coupe. Starting at $279,995, the 2014 Aston Martin Vanquish Coupe is powered by a 6.0L , 12 -cylinder engine mated to an automatic transmission that returns an EPA estimated 13-mpg in the city and 19-mpg on the highway. The top of the line 2014Aston MartinVanquishConvertible , priced at $ 296,295 , is powered by a 6.0L , 12 - cylinder engine mated to an automatic transmission that returns an EPA estimated 13-mpg in the city and 19-mpg on the highway.