Mercedes GLA-Class (2018) is 38 mm (1.50 inch) wider, 136 mm (5.35 inch) higher and has 95 liters (3.35 ft3) bigger cargo space than Subaru Impreza WRX (2018).
Subaru Impreza WRX (2018) is 170 mm (6.69 inch) longer and 29 kg (64 lbs) lighter than Mercedes GLA-Class (2018).