GMC Yukon XL (2021) is 865 mm (34.06 inch) longer, 197 mm (7.76 inch) wider, 473 mm (18.62 inch) higher and has 2216 liters (78.26 ft3) bigger cargo space than Kia Optima Sportswagon (2017).
Kia Optima Sportswagon (2017) is 840 kg (1,852 lbs) lighter than GMC Yukon XL (2021).