Chevrolet Impala (2016) is 258 mm (10.16 inch) longer, 26 mm (1.02 inch) higher and has 23 liters (0.81 ft3) bigger cargo space than Kia Optima (2018).
Kia Optima (2018) is 6 mm (0.24 inch) wider and 164 kg (362 lbs) lighter than Chevrolet Impala (2016).
