Mercedes S-Class (2020) is 866 mm (34.09 inch) longer, 99 mm (3.90 inch) wider, 195 mm (7.68 inch) higher and has 350 liters (12.36 ft3) bigger cargo space than Porsche 718 Cayman (2014).
Porsche 718 Cayman (2014) is 704 kg (1,552 lbs) lighter than Mercedes S-Class (2020).