Mercedes A-Class (2016) is 455 kg (1,003 lbs) lighter than Seat Leon ST (2014).
Seat Leon ST (2014) is 243 mm (9.57 inch) longer, 36 mm (1.42 inch) wider, 22 mm (0.87 inch) higher and has 246 liters (8.69 ft3) bigger cargo space than Mercedes A-Class (2016).