Mercedes M-Class (2015) is 146 mm (5.75 inch) longer, 112 mm (4.41 inch) wider, 288 mm (11.34 inch) higher and has 230 liters (8.12 ft3) bigger cargo space than Opel Astra (2020).
Opel Astra (2020) is 745 kg (1,642 lbs) lighter than Mercedes M-Class (2015).