Audi S5 (2016) is 1076 kg (2,372 lbs) lighter than GMC Sierra 2500HD (2019).
GMC Sierra 2500HD (2019) is 982 mm (38.66 inch) longer, 181 mm (7.13 inch) wider, 594 mm (23.39 inch) higher and has 1246 liters (44.00 ft3) bigger cargo space than Audi S5 (2016).
