BMW 8 Series (G14) (2019) is 157 mm (6.18 inch) longer and 92 mm (3.62 inch) wider than Mercedes C-Class (2019).
Mercedes C-Class (2019) is 103 mm (4.06 inch) higher, 478 kg (1,054 lbs) lighter and has 130 liters (4.59 ft3) bigger cargo space than BMW 8 Series (G14) (2019).