Kia Optima (2017) is 1380 mm (54.33 inch) longer, 385 mm (15.16 inch) wider and has 344 liters (12.15 ft3) bigger cargo space than Mitsubishi i-MiEV (2014).
Mitsubishi i-MiEV (2014) is 140 mm (5.51 inch) higher and 400 kg (882 lbs) lighter than Kia Optima (2017).