BMW 7 Series (2020) is 434 mm (17.09 inch) longer, 92 mm (3.62 inch) wider, 25 mm (0.98 inch) higher and has 35 liters (1.24 ft3) bigger cargo space than Mercedes C-Class (2020).
Mercedes C-Class (2020) is 570 kg (1,257 lbs) lighter than BMW 7 Series (2020).