BMW 6 Series Gran Coupe (2017) is 325 mm (12.80 inch) longer, 178 mm (7.01 inch) higher and has 39 liters (1.38 ft3) bigger cargo space than McLaren GT (2020).
McLaren GT (2020) is 200 mm (7.87 inch) wider and 330 kg (728 lbs) lighter than BMW 6 Series Gran Coupe (2017).