FIAT 500 (2017) is 649 kg (1,431 lbs) lighter than GMC Sierra 2500HD (2015).
GMC Sierra 2500HD (2015) is 2533 mm (99.72 inch) longer, 418 mm (16.46 inch) wider, 500 mm (19.69 inch) higher and has 1542 liters (54.45 ft3) bigger cargo space than FIAT 500 (2017).