The 2020 Ford Mustang is available as a 2-door, 4-seat coupe. Starting at $26,670, the 2020 Ford Mustang EcoBoost Fastback is powered by a 2.3LL , 4 -cylinder engine mated to a manual transmission that returns an EPA estimated 21-mpg in the city and 30-mpg on the highway. The top of the line 2020FordMustangGT Premium Convertible , priced at $ 45,380 , is powered by a 5.0LL , 8 - cylinder engine mated to a manual transmission that returns an EPA estimated 15-mpg in the city and 24-mpg on the highway.