Mercedes G-Class (2017) is 306 mm (12.05 inch) longer, 64 mm (2.52 inch) wider, 684 mm (26.93 inch) higher and has 303 liters (10.70 ft3) bigger cargo space than Porsche 718 Cayman (2021).
Porsche 718 Cayman (2021) is 1144 kg (2,522 lbs) lighter than Mercedes G-Class (2017).