Audi Q5 (2015) is 314 mm (12.36 inch) higher, 129 kg (284 lbs) lighter and has 120 liters (4.24 ft3) bigger cargo space than BMW 8 Series (G15) (2018).
BMW 8 Series (G15) (2018) is 214 mm (8.43 inch) longer and 4 mm (0.16 inch) wider than Audi Q5 (2015).