Kia Optima Sportswagon (2018) is 230 mm (9.06 inch) longer, 82 mm (3.23 inch) wider, 15 mm (0.59 inch) higher and has 92 liters (3.25 ft3) bigger cargo space than Subaru Impreza GT (2017).
Subaru Impreza GT (2017) is 606 kg (1,336 lbs) lighter than Kia Optima Sportswagon (2018).