Audi Q7 (2015) is 252 mm (9.92 inch) longer, 82 mm (3.23 inch) wider, 398 mm (15.67 inch) higher and has 839 liters (29.63 ft3) bigger cargo space than BMW 8 Series (G14) (2020).
BMW 8 Series (G14) (2020) is 422 kg (930 lbs) lighter than Audi Q7 (2015).