GMC Sierra 3500HD (2020) is 1567 mm (61.69 inch) longer, 336 mm (13.23 inch) wider, 560 mm (22.05 inch) higher and has 1585 liters (55.97 ft3) bigger cargo space than Subaru Impreza GP (2014).
Subaru Impreza GP (2014) is 1374 kg (3,029 lbs) lighter than GMC Sierra 3500HD (2020).