GMC Yukon XL (2017) is 324 mm (12.76 inch) longer, 185 mm (7.28 inch) wider, 420 mm (16.54 inch) higher and has 1732 liters (61.16 ft3) bigger cargo space than Kia Optima Sportswagon (2018).
Kia Optima Sportswagon (2018) is 880 kg (1,940 lbs) lighter than GMC Yukon XL (2017).