FIAT 500X (2017) is 640 kg (1,411 lbs) lighter than GMC Sierra 1500 (2020).
GMC Sierra 1500 (2020) is 948 mm (37.32 inch) longer, 236 mm (9.29 inch) wider, 259 mm (10.20 inch) higher and has 1378 liters (48.66 ft3) bigger cargo space than FIAT 500X (2017).