Mercedes S-Class (2016) is 787 mm (30.98 inch) longer, 96 mm (3.78 inch) wider, 220 mm (8.66 inch) higher and has 316 liters (11.16 ft3) bigger cargo space than Porsche 718 Cayman (2021).
Porsche 718 Cayman (2021) is 694 kg (1,530 lbs) lighter than Mercedes S-Class (2016).