BMW X4 (2019) is 334 mm (13.15 inch) longer, 123 mm (4.84 inch) wider, 124 mm (4.88 inch) higher and has 104 liters (3.67 ft3) bigger cargo space than Mercedes GLA-Class (2016).
Mercedes GLA-Class (2016) is 667 kg (1,470 lbs) lighter than BMW X4 (2019).