The 2004 Ford Mustang is available as a 2-door, 4-seat coupe. Starting at $34,860, the 2004 Ford Mustang SVT Coupe is powered by a 4.6L , 8 -cylinder engine mated to a manual transmission that returns an EPA estimated 17-mpg in the city and 24-mpg on the highway. The top of the line 2004FordMustangGT Premium (180A) Convertible , priced at $ 29,185 , is powered by a 4.6L , 8 - cylinder engine mated to a manual transmission that returns an EPA estimated 17-mpg in the city and 25-mpg on the highway.