Mercedes G-Class (2018) is 5 mm (0.20 inch) wider and 181 mm (7.13 inch) higher than Mercedes M-Class (2014).
Mercedes M-Class (2014) is 135 mm (5.31 inch) longer, 318 kg (701 lbs) lighter and has 23 liters (0.81 ft3) bigger cargo space than Mercedes G-Class (2018).