Alfa Romeo 4C (2017) is 89 mm (3.50 inch) wider and 367 kg (809 lbs) lighter than Mercedes CLA-Class (2015).
Mercedes CLA-Class (2015) is 642 mm (25.28 inch) longer, 254 mm (10.00 inch) higher and has 360 liters (12.71 ft3) bigger cargo space than Alfa Romeo 4C (2017).