Mercedes GLA-Class (2014) is 189 mm (7.44 inch) longer, 48 mm (1.89 inch) higher and has 41 liters (1.45 ft3) bigger cargo space than Seat Leon SC (2014).
Seat Leon SC (2014) is 6 mm (0.24 inch) wider and 206 kg (454 lbs) lighter than Mercedes GLA-Class (2014).