BMW 8 Series (G15) (2019) 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 209 kg (461 lbs) lighter than BMW 8 Series (G15) (2019).