BMW X7 (2018) is 465 mm (18.31 inch) longer, 190 mm (7.48 inch) wider, 363 mm (14.29 inch) higher and has 270 liters (9.53 ft3) bigger cargo space than Mercedes C-Class (2017).
Mercedes C-Class (2017) is 1010 kg (2,227 lbs) lighter than BMW X7 (2018).