Mazda 3 (Hatchback) (2014) is 50 mm (1.97 inch) longer and 263 kg (580 lbs) lighter than Mercedes GLA-Class (2017).
Mercedes GLA-Class (2017) is 38 mm (1.50 inch) wider, 156 mm (6.14 inch) higher and has 71 liters (2.51 ft3) bigger cargo space than Mazda 3 (Hatchback) (2014).