BMW 7 Series (2018) is 396 mm (15.59 inch) longer, 92 mm (3.62 inch) wider, 21 mm (0.83 inch) higher and has 24 liters (0.85 ft3) bigger cargo space than Mercedes C-Class (Estate) (2017).
Mercedes C-Class (Estate) (2017) is 265 kg (584 lbs) lighter than BMW 7 Series (2018).