Kia Optima Sportswagon (2015) is 430 mm (16.93 inch) longer, 141 kg (311 lbs) lighter and has 93 liters (3.28 ft3) bigger cargo space than Volvo XC40 (2020).
Volvo XC40 (2020) is 50 mm (1.97 inch) wider and 188 mm (7.40 inch) higher than Kia Optima Sportswagon (2015).