GMC Yukon (2021) is 335 mm (13.19 inch) longer, 115 mm (4.53 inch) wider, 124 mm (4.88 inch) higher and has 389 liters (13.74 ft3) bigger cargo space than Subaru Ascent (2020).
Subaru Ascent (2020) is 481 kg (1,060 lbs) lighter than GMC Yukon (2021).