Mercedes CLA-Class (2018) is 262 mm (10.31 inch) longer, 130 kg (287 lbs) lighter and has 200 liters (7.06 ft3) bigger cargo space than Seat Leon (2020).
Seat Leon (2020) is 21 mm (0.83 inch) wider and 22 mm (0.87 inch) higher than Mercedes CLA-Class (2018).