Kia Optima (2015) 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 145 mm (5.71 inch) higher and 385 kg (849 lbs) lighter than Kia Optima (2015).