BMW 8 Series (G15) (2018) is 475 mm (18.70 inch) longer, 103 mm (4.06 inch) wider and has 150 liters (5.30 ft3) bigger cargo space than Seat Leon (2020).
Seat Leon (2020) is 119 mm (4.69 inch) higher and 309 kg (681 lbs) lighter than BMW 8 Series (G15) (2018).