The 2020 Mercedes-Benz AMG GT 63 is available as a 4-door, 4-seat hatchback. Starting at $140,250, the 2020 Mercedes-Benz AMG GT 63 Base AMG GT 63 Coupe Hatchback is powered by a 4.0L, 8-cylinder engine mated to an automatic transmission that returns an EPA estimated 15-mpg in the city and 20-mpg on the highway. The top of the line 2020 Mercedes-Benz AMG GT 63 S AMG GT 63 Coupe Hatchback, priced at $161,200, is powered by a 4.0L, 8-cylinder engine mated to an automatic transmission that returns an EPA estimated 15-mpg in the city and 20-mpg on the highway.