Alfa Romeo 4C (2018) is 63 mm (2.48 inch) wider and 267 kg (589 lbs) lighter than Mercedes GLA-Class (2015).
Mercedes GLA-Class (2015) is 429 mm (16.89 inch) longer, 308 mm (12.13 inch) higher and has 311 liters (10.98 ft3) bigger cargo space than Alfa Romeo 4C (2018).