BMW 8 Series (G15) (2019) is 157 mm (6.18 inch) longer, 92 mm (3.62 inch) wider and has 64 liters (2.26 ft3) bigger cargo space than Mercedes C-Class (Coupe) (2020).
Mercedes C-Class (Coupe) (2020) is 68 mm (2.68 inch) higher and 274 kg (604 lbs) lighter than BMW 8 Series (G15) (2019).