Mercedes CLS-Class (2019) is 482 mm (18.98 inch) longer, 79 mm (3.11 inch) wider, 147 mm (5.79 inch) higher and has 336 liters (11.87 ft3) bigger cargo space than Porsche 718 Cayman (2021).
Porsche 718 Cayman (2021) is 324 kg (714 lbs) lighter than Mercedes CLS-Class (2019).