Kia Pro Ceed (2020) is 471 mm (18.54 inch) longer, 119 mm (4.69 inch) higher, 119 kg (262 lbs) lighter and has 60 liters (2.12 ft3) bigger cargo space than Mercedes SLK-Class (2017).
Mercedes SLK-Class (2017) is 17 mm (0.67 inch) wider than Kia Pro Ceed (2020).