Kia Optima Sportswagon (2015) is 19 mm (0.75 inch) longer, 70 mm (2.76 inch) higher, 88 kg (194 lbs) lighter and has 147 liters (5.19 ft3) bigger cargo space than Kia Stinger (2020).
Kia Stinger (2020) is 9 mm (0.35 inch) wider than Kia Optima Sportswagon (2015).