Chevrolet Sonic (Sedan) (2014) is 867 mm (34.13 inch) longer, 108 mm (4.25 inch) wider, 28 mm (1.10 inch) higher and has 237 liters (8.37 ft3) bigger cargo space than FIAT 500 (2017).
FIAT 500 (2017) is 318 kg (701 lbs) lighter than Chevrolet Sonic (Sedan) (2014).