Mercedes X-Class (2017) is 842 mm (33.15 inch) longer, 133 mm (5.24 inch) wider, 380 mm (14.96 inch) higher and has 860 liters (30.37 ft3) bigger cargo space than Opel Ampera (2020).
Opel Ampera (2020) is 501 kg (1,105 lbs) lighter than Mercedes X-Class (2017).