Mazda CX-9 (2017) is 570 mm (22.44 inch) longer, 96 mm (3.78 inch) wider, 29 mm (1.14 inch) higher and has 631 liters (22.28 ft3) bigger cargo space than Mercedes GLK-Class (2014).
Mercedes GLK-Class (2014) is 81 kg (179 lbs) lighter than Mazda CX-9 (2017).