BMW 8 Series (G14) (2020) is 552 mm (21.73 inch) longer and 86 mm (3.39 inch) wider than Seat Leon (2016).
Seat Leon (2016) is 120 mm (4.72 inch) higher, 720 kg (1,587 lbs) lighter and has 30 liters (1.06 ft3) bigger cargo space than BMW 8 Series (G14) (2020).