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 2103 liters (74.27 ft3) bigger cargo space than Kia Optima Sportswagon (2015).
Kia Optima Sportswagon (2015) is 1005 kg (2,216 lbs) lighter than GMC Yukon XL (2021).