Kia Optima Sportswagon (2015) is 215 mm (8.46 inch) longer, 15 mm (0.59 inch) wider, 287 kg (633 lbs) lighter and has 52 liters (1.84 ft3) bigger cargo space than Lexus NX (2020).
Lexus NX (2020) is 176 mm (6.93 inch) higher than Kia Optima Sportswagon (2015).