BMW 3 Series Touring (2016) is 265 mm (10.43 inch) longer, 12 mm (0.47 inch) wider and has 225 liters (7.95 ft3) bigger cargo space than Seat Leon (2020).
Seat Leon (2020) is 31 mm (1.22 inch) higher and 25 kg (55 lbs) lighter than BMW 3 Series Touring (2016).