Alfa Romeo Giulia (2018) is 233 mm (9.17 inch) longer, 39 mm (1.54 inch) wider, 79 kg (174 lbs) lighter and has 15 liters (0.53 ft3) bigger cargo space than Mercedes GLA-Class (2020).
Mercedes GLA-Class (2020) is 175 mm (6.89 inch) higher than Alfa Romeo Giulia (2018).