Mercedes SLK-Class (2014) is 18 mm (0.71 inch) wider and 204 kg (450 lbs) lighter than Seat Leon ST (2020).
Seat Leon ST (2020) is 508 mm (20.00 inch) longer, 153 mm (6.02 inch) higher and has 135 liters (4.77 ft3) bigger cargo space than Mercedes SLK-Class (2014).