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 (2020).
Kia Optima Sportswagon (2020) is 729 kg (1,607 lbs) lighter than GMC Yukon XL (2021).