Ford Mustang (2017) is 178 kg (392 lbs) lighter than GMC Sierra 1500 (2021).
GMC Sierra 1500 (2021) is 437 mm (17.20 inch) longer, 116 mm (4.57 inch) wider, 473 mm (18.62 inch) higher and has 1404 liters (49.58 ft3) bigger cargo space than Ford Mustang (2017).