Mercedes GLK-Class (2014) is 270 kg (595 lbs) lighter than Mercedes M-Class (2014).
Mercedes M-Class (2014) is 268 mm (10.55 inch) longer, 86 mm (3.39 inch) wider, 89 mm (3.50 inch) higher and has 240 liters (8.48 ft3) bigger cargo space than Mercedes GLK-Class (2014).