FIAT 500L Trekking (2020) is 199 kg (439 lbs) lighter than GMC Sierra 2500HD (2015).
GMC Sierra 2500HD (2015) is 1731 mm (68.15 inch) longer, 272 mm (10.71 inch) wider, 319 mm (12.56 inch) higher and has 1315 liters (46.44 ft3) bigger cargo space than FIAT 500L Trekking (2020).