Chevrolet Impala (2015) is 884 mm (34.80 inch) longer, 81 mm (3.19 inch) wider and has 335 liters (11.83 ft3) bigger cargo space than FIAT 500L (2016).
FIAT 500L (2016) is 173 mm (6.81 inch) higher and 271 kg (597 lbs) lighter than Chevrolet Impala (2015).