Mercedes M-Class (2014) is 323 mm (12.72 inch) longer, 181 mm (7.13 inch) wider, 297 mm (11.69 inch) higher and has 233 liters (8.23 ft3) bigger cargo space than Toyota Prius Prime (2018).
Toyota Prius Prime (2018) is 769 kg (1,695 lbs) lighter than Mercedes M-Class (2014).