Kia Optima Sportswagon (2020) is 85 mm (3.35 inch) longer and 69 kg (152 lbs) lighter than Lexus GX (2021).
Lexus GX (2021) is 25 mm (0.98 inch) wider, 224 mm (8.82 inch) higher and has 882 liters (31.15 ft3) bigger cargo space than Kia Optima Sportswagon (2020).