Ford Mustang (2017) is 957 kg (2,110 lbs) lighter than GMC Sierra 3500HD (2020).
GMC Sierra 3500HD (2020) is 1198 mm (47.17 inch) longer, 160 mm (6.30 inch) wider, 636 mm (25.04 inch) higher and has 1646 liters (58.13 ft3) bigger cargo space than Ford Mustang (2017).