Buick Regal Sportback (2020) is 813 kg (1,792 lbs) lighter than GMC Yukon XL (2021).
GMC Yukon XL (2021) is 820 mm (32.28 inch) longer, 195 mm (7.68 inch) wider, 488 mm (19.21 inch) higher and has 2186 liters (77.20 ft3) bigger cargo space than Buick Regal Sportback (2020).