BMW 3 Series Gran Turismo (2020) is 561 mm (22.09 inch) longer, 12 mm (0.47 inch) wider, 49 mm (1.93 inch) higher and has 140 liters (4.94 ft3) bigger cargo space than Seat Leon (2014).
Seat Leon (2014) is 526 kg (1,160 lbs) lighter than BMW 3 Series Gran Turismo (2020).