BMW 8 Series (G14) (2020) is 466 mm (18.35 inch) longer, 103 mm (4.06 inch) wider and has 80 liters (2.83 ft3) bigger cargo space than Seat Leon (2020).
Seat Leon (2020) is 121 mm (4.76 inch) higher and 318 kg (701 lbs) lighter than BMW 8 Series (G14) (2020).