Bentley Bentayga (2020) is 282 mm (11.10 inch) longer, 96 mm (3.78 inch) wider, 387 mm (15.24 inch) higher and has 64 liters (2.26 ft3) bigger cargo space than BMW 8 Series (G15) (2018).
BMW 8 Series (G15) (2018) is 1576 kg (3,474 lbs) lighter than Bentley Bentayga (2020).