GMC Sierra 2500HD (2017) is 1360 mm (53.54 inch) longer, 345 mm (13.58 inch) wider, 571 mm (22.48 inch) higher and has 1378 liters (48.66 ft3) bigger cargo space than Subaru Impreza GJ (2015).
Subaru Impreza GJ (2015) is 1384 kg (3,051 lbs) lighter than GMC Sierra 2500HD (2017).