McLaren 650S Coupe (2015) is 203 mm (7.99 inch) wider and 632 kg (1,393 lbs) lighter than Mercedes GLC-Class (2020).
Mercedes GLC-Class (2020) is 144 mm (5.67 inch) longer, 456 mm (17.95 inch) higher and has 206 liters (7.27 ft3) bigger cargo space than McLaren 650S Coupe (2015).