GMC Acadia (2021) is 431 mm (16.97 inch) longer, 73 mm (2.87 inch) wider, 268 kg (591 lbs) lighter and has 513 liters (18.12 ft3) bigger cargo space than Mercedes G-Class (2018).
Mercedes G-Class (2018) is 125 mm (4.92 inch) higher than GMC Acadia (2021).