FIAT 500X (2017) is 1419 kg (3,128 lbs) lighter than GMC Sierra 2500HD (2020).
GMC Sierra 2500HD (2020) is 1709 mm (67.28 inch) longer, 282 mm (11.10 inch) wider, 416 mm (16.38 inch) higher and has 1377 liters (48.63 ft3) bigger cargo space than FIAT 500X (2017).