The 2020 Mercedes-Benz AMG GLC 63 is available as a 4-door, 5-seat sport utility. Starting at $73,750, the 2020 Mercedes-Benz AMG GLC 63 AMG GLC 63 AWD is powered by a 4.0LL , 8 -cylinder engine mated to an automatic transmission that returns an EPA estimated 16-mpg in the city and 22-mpg on the highway. The top of the line 2020Mercedes-BenzAMG GLC 63S AMG GLC 63 Coupe AWD , priced at $ 84,100 , is powered by a 4.0LL , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated 16-mpg in the city and 22-mpg on the highway.