BMW X3 (2018) is 31 mm (1.22 inch) wider and 206 mm (8.11 inch) higher than Kia Optima Sportswagon (2015).
Kia Optima Sportswagon (2015) is 147 mm (5.79 inch) longer, 464 kg (1,023 lbs) lighter and has 3 liters (0.11 ft3) bigger cargo space than BMW X3 (2018).
