Mercedes-AMG GT 63 S 4MATIC+ is the fastest luxury class vehicle on the Nordschleife Published on November 11, 2020 Auto/Business 734 views With the 2021 model year, in production since September 2020, the Mercedes-AMG GT 63 S 4MATIC+ (fuel consumption combined: 12.5 l/100 km; CO2 emissions combined: 286 g/km)[1] is even faster on the legendary Nordschleife of the Nürburgring. More