Ford F-250 (2016) is 614 mm (24.17 inch) longer, 38 mm (1.50 inch) higher and has 115 liters (4.06 ft3) bigger cargo space than GMC Sierra 2500HD (2017).
GMC Sierra 2500HD (2017) is 6 mm (0.24 inch) wider and 449 kg (990 lbs) lighter than Ford F-250 (2016).