Kia Optima Sportswagon (2017) is 515 mm (20.28 inch) longer, 170 mm (6.69 inch) wider, 65 mm (2.56 inch) higher and has 100 liters (3.53 ft3) bigger cargo space than Subaru Impreza GJ (2015).
Subaru Impreza GJ (2015) is 495 kg (1,091 lbs) lighter than Kia Optima Sportswagon (2017).