BMW X7 (2018) is 495 mm (19.49 inch) longer, 110 mm (4.33 inch) wider, 146 mm (5.75 inch) higher and has 400 liters (14.13 ft3) bigger cargo space than Mercedes GLC-Class (2016).
Mercedes GLC-Class (2016) is 355 kg (783 lbs) lighter than BMW X7 (2018).