Chevrolet Impala (2014) is 69 mm (2.72 inch) longer, 13 mm (0.51 inch) higher, 104 kg (229 lbs) lighter and has 71 liters (2.51 ft3) bigger cargo space than Chrysler 300 (2015).
Chrysler 300 (2015) is 51 mm (2.01 inch) wider than Chevrolet Impala (2014).