GMC Yukon XL (2019) is 701 mm (27.60 inch) longer, 115 mm (4.53 inch) wider, 71 mm (2.80 inch) higher and has 505 liters (17.83 ft3) bigger cargo space than Subaru Ascent (2020).
Subaru Ascent (2020) is 536 kg (1,182 lbs) lighter than GMC Yukon XL (2019).