The 2018 Mercedes-Benz AMG G 65 is available as a 4-door, 5-seat sport utility. Starting at $222,700, the 2018 Mercedes-Benz AMG G 65 AMG G 65 is powered by a 6.0L, 12-cylinder engine mated to an automatic transmission that returns an EPA estimated 11-mpg in the city and 13-mpg on the highway.