Mercedes-Benz S-Class. All S-Class Archive News & Media ; S 350 BlueTEC 4MATIC ; S 400 Hybrid ; S 550 ; 56.8 (GT 63 S: 57.0) Track (front / rear) 65.9 / 65.6 (GT Check the price in your area: Mercedes-AMG GT 63 S For Sale 2020 Mercedes-Benz AMG GT 63 S 4-Door powered by 4.0L V8 Gas Engine with 9-Speed Automatic transmission. The price of the 2020 Mercedes-AMG GT43 / GT53 / GT63 / GT63 S starts at $100,945 and goes up to $162,195 depending on the trim and options. the 2020 Mercedes-AMG GT coupe gets the same .