FIAT 500L Trekking (2020) is 1325 kg (2,921 lbs) lighter than GMC Sierra 3500HD (2018).
GMC Sierra 3500HD (2018) is 1347 mm (53.03 inch) longer, 262 mm (10.31 inch) wider, 308 mm (12.13 inch) higher and has 1579 liters (55.76 ft3) bigger cargo space than FIAT 500L Trekking (2020).