BMW 7 Series (2018) is 506 mm (19.92 inch) longer, 132 mm (5.20 inch) wider, 48 mm (1.89 inch) higher and has 183 liters (6.46 ft3) bigger cargo space than Mercedes C-Class (Coupe) (2014).
Mercedes C-Class (Coupe) (2014) is 255 kg (562 lbs) lighter than BMW 7 Series (2018).