Audi Q7 (2014) is 693 mm (27.28 inch) longer, 214 mm (8.43 inch) wider, 180 mm (7.09 inch) higher and has 703 liters (24.83 ft3) bigger cargo space than Mercedes B-Class (2018).
Mercedes B-Class (2018) is 960 kg (2,116 lbs) lighter than Audi Q7 (2014).