FIAT 500L (2018) is 1261 kg (2,780 lbs) lighter than GMC Sierra 3500HD (2017).
GMC Sierra 3500HD (2017) is 1470 mm (57.87 inch) longer, 262 mm (10.31 inch) wider, 308 mm (12.13 inch) higher and has 1793 liters (63.32 ft3) bigger cargo space than FIAT 500L (2018).