Mercedes M-Class (2015) is 551 mm (21.69 inch) longer, 122 mm (4.80 inch) wider, 331 mm (13.03 inch) higher and has 220 liters (7.77 ft3) bigger cargo space than Peugeot 308 (2016).
Peugeot 308 (2016) is 830 kg (1,830 lbs) lighter than Mercedes M-Class (2015).