Mercedes E-Class (2014) is 75 mm (2.95 inch) longer and 270 kg (595 lbs) lighter than Mercedes M-Class (2014).
Mercedes M-Class (2014) is 72 mm (2.83 inch) wider, 345 mm (13.58 inch) higher and has 150 liters (5.30 ft3) bigger cargo space than Mercedes E-Class (2014).