Mercedes SLK-Class (2014) is 14 mm (0.55 inch) wider, 33 mm (1.30 inch) higher and has 151 liters (5.33 ft3) bigger cargo space than Porsche 718 Cayman (2020).
Porsche 718 Cayman (2020) is 324 mm (12.76 inch) longer and 4 kg (9 lbs) lighter than Mercedes SLK-Class (2014).