BMW 8 Series (G14) (2019) is 475 mm (18.70 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 308 kg (679 lbs) lighter than BMW 8 Series (G14) (2019).