The 2011 Ford Mustang is available as a 2-door, 4-seat coupe. Starting at $22,145, the 2011 Ford Mustang V6 Coupe is powered by a 3.7L , 6 -cylinder engine mated to a manual transmission that returns an EPA estimated 19-mpg in the city and 29-mpg on the highway. The top of the line 2011FordMustangGT Premium Convertible , priced at $ 37,845 , is powered by a 5.0L , 8 - cylinder engine mated to a manual transmission that returns an EPA estimated 18-mpg in the city and 25-mpg on the highway.