GMC Yukon (2015) is 324 mm (12.76 inch) longer, 185 mm (7.28 inch) wider, 420 mm (16.54 inch) higher and has 1191 liters (42.06 ft3) bigger cargo space than Kia Optima Sportswagon (2017).
Kia Optima Sportswagon (2017) is 768 kg (1,693 lbs) lighter than GMC Yukon (2015).