Mercedes G-Class (2015) is 1066 mm (41.97 inch) longer, 147 mm (5.79 inch) wider, 470 mm (18.50 inch) higher and has 100 liters (3.53 ft3) bigger cargo space than Opel Adam (2017).
Opel Adam (2017) is 1509 kg (3,327 lbs) lighter than Mercedes G-Class (2015).