Kia Optima Sportswagon (2017) is 19 mm (0.75 inch) longer, 70 mm (2.76 inch) higher and has 34 liters (1.20 ft3) bigger cargo space than Kia Stinger (2020).
Kia Stinger (2020) is 9 mm (0.35 inch) wider and 77 kg (170 lbs) lighter than Kia Optima Sportswagon (2017).