Audi Q7 (2015) is 262 mm (10.31 inch) longer, 156 mm (6.14 inch) wider, 229 mm (9.02 inch) higher and has 669 liters (23.63 ft3) bigger cargo space than BMW 3 Series Gran Turismo (2018).
BMW 3 Series Gran Turismo (2018) is 620 kg (1,367 lbs) lighter than Audi Q7 (2015).