Mercedes SLK-Class (2020) is 17 mm (0.67 inch) wider, 8 mm (0.31 inch) higher and has 185 liters (6.53 ft3) bigger cargo space than Porsche 718 Cayman (2014).
Porsche 718 Cayman (2014) is 245 mm (9.65 inch) longer and 14 kg (31 lbs) lighter than Mercedes SLK-Class (2020).