FIAT 500X (2016) is 130 mm (5.12 inch) higher and 155 kg (342 lbs) lighter than Kia Optima Sportswagon (2015).
Kia Optima Sportswagon (2015) is 607 mm (23.90 inch) longer, 64 mm (2.52 inch) wider and has 203 liters (7.17 ft3) bigger cargo space than FIAT 500X (2016).