Kia Optima (2015) is 199 mm (7.83 inch) longer, 49 mm (1.93 inch) wider, 340 kg (750 lbs) lighter and has 47 liters (1.66 ft3) bigger cargo space than Mitsubishi Outlander (2015).
Mitsubishi Outlander (2015) is 214 mm (8.43 inch) higher than Kia Optima (2015).