Mazda CX-9 (2017) is 696 mm (27.40 inch) longer, 102 mm (4.02 inch) wider, 117 mm (4.61 inch) higher and has 646 liters (22.81 ft3) bigger cargo space than Mercedes GLA-Class (2018).
Mercedes GLA-Class (2018) is 398 kg (877 lbs) lighter than Mazda CX-9 (2017).