Kia Optima Sportswagon (2020) is 1 mm (0.04 inch) longer and 198 kg (437 lbs) lighter than Toyota Highlander (2018).
Toyota Highlander (2018) is 65 mm (2.56 inch) wider, 260 mm (10.24 inch) higher and has 425 liters (15.01 ft3) bigger cargo space than Kia Optima Sportswagon (2020).