Mercedes G-Class (2017) is 372 mm (14.65 inch) longer, 66 mm (2.60 inch) wider, 659 mm (25.94 inch) higher and has 337 liters (11.90 ft3) bigger cargo space than Porsche 718 Cayman (2017).
Porsche 718 Cayman (2017) is 1154 kg (2,544 lbs) lighter than Mercedes G-Class (2017).