Audi Q7 (2018) is 409 mm (16.10 inch) longer, 158 mm (6.22 inch) wider, 311 mm (12.24 inch) higher and has 515 liters (18.19 ft3) bigger cargo space than BMW 3 Series Touring (2018).
BMW 3 Series Touring (2018) is 306 kg (675 lbs) lighter than Audi Q7 (2018).