BMW 7 Series (2016) is 412 mm (16.22 inch) longer, 92 mm (3.62 inch) wider, 36 mm (1.42 inch) higher and has 35 liters (1.24 ft3) bigger cargo space than Mercedes C-Class (2018).
Mercedes C-Class (2018) is 355 kg (783 lbs) lighter than BMW 7 Series (2016).