Alfa Romeo 4C (2019) is 1641 kg (3,618 lbs) lighter than GMC Sierra 3500HD (2020).
GMC Sierra 3500HD (2020) is 1994 mm (78.50 inch) longer, 209 mm (8.23 inch) wider, 844 mm (33.23 inch) higher and has 1860 liters (65.68 ft3) bigger cargo space than Alfa Romeo 4C (2019).
