Ford Flex (2019) is 270 mm (10.63 inch) longer, 396 mm (15.59 inch) wider, 256 mm (10.08 inch) higher and has 783 liters (27.65 ft3) bigger cargo space than Kia Optima Sportswagon (2017).
Kia Optima Sportswagon (2017) is 313 kg (690 lbs) lighter than Ford Flex (2019).