Chevrolet Impala (2017) is 258 mm (10.16 inch) longer and 26 mm (1.02 inch) higher than Kia Optima Sportswagon (2015).
Kia Optima Sportswagon (2015) is 6 mm (0.24 inch) wider, 174 kg (384 lbs) lighter and has 20 liters (0.71 ft3) bigger cargo space than Chevrolet Impala (2017).
