BMW 5 Series Gran Turismo (2018) is 661 mm (26.02 inch) longer, 51 mm (2.01 inch) wider, 9 mm (0.35 inch) higher and has 150 liters (5.30 ft3) bigger cargo space than Seat Leon (2016).
Seat Leon (2016) is 486 kg (1,071 lbs) lighter than BMW 5 Series Gran Turismo (2018).