Mercedes M-Class (2014) is 522 mm (20.55 inch) longer, 110 mm (4.33 inch) wider, 329 mm (12.95 inch) higher and has 310 liters (10.95 ft3) bigger cargo space than Seat Leon (2016).
Seat Leon (2016) is 937 kg (2,066 lbs) lighter than Mercedes M-Class (2014).