GMC Sierra 1500 (2021) is 771 mm (30.35 inch) longer, 252 mm (9.92 inch) wider, 252 mm (9.92 inch) higher and has 1348 liters (47.60 ft3) bigger cargo space than Subaru XV (2017).
Subaru XV (2017) is 550 kg (1,213 lbs) lighter than GMC Sierra 1500 (2021).