Audi Q7 (2015) is 550 mm (21.65 inch) longer, 144 mm (5.67 inch) wider, 38 mm (1.50 inch) higher and has 739 liters (26.10 ft3) bigger cargo space than Mercedes GLK-Class (2018).
Mercedes GLK-Class (2018) is 475 kg (1,047 lbs) lighter than Audi Q7 (2015).