Mercedes GLC-Class (2014) is 50 kg (110 lbs) lighter than Mercedes M-Class (2014).
Mercedes M-Class (2014) is 148 mm (5.83 inch) longer, 36 mm (1.42 inch) wider, 129 mm (5.08 inch) higher and has 340 liters (12.01 ft3) bigger cargo space than Mercedes GLC-Class (2014).