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 1619 liters (57.17 ft3) bigger cargo space than Kia Optima Sportswagon (2015).
Kia Optima Sportswagon (2015) is 1156 kg (2,549 lbs) lighter than GMC Yukon XL (2017).