The 2020 Mercedes-Benz GLC 300 is available as a 4-door, 5-seat sport utility. Starting at $42,500, the 2020 Mercedes-Benz GLC 300 GLC 300 4x2 is powered by a 2.0L, 4-cylinder engine mated to an automatic transmission that returns an EPA estimated 22-mpg in the city and 29-mpg on the highway. The top of the line 2020 Mercedes-Benz GLC 300 GLC 300 Coupe AWD, priced at $50,000, is powered by a 2.0L, 4-cylinder engine mated to an automatic transmission that returns an EPA estimated 21-mpg in the city and 28-mpg on the highway.