GMC Yukon (2021) is 479 mm (18.86 inch) longer, 185 mm (7.28 inch) wider, 473 mm (18.62 inch) higher and has 1616 liters (57.07 ft3) bigger cargo space than Kia Optima Sportswagon (2017).
Kia Optima Sportswagon (2017) is 775 kg (1,709 lbs) lighter than GMC Yukon (2021).