Audi S4 (2017) is 1213 kg (2,674 lbs) lighter than GMC Sierra 2500HD (2016).
GMC Sierra 2500HD (2016) is 954 mm (37.56 inch) longer, 193 mm (7.60 inch) wider, 565 mm (22.24 inch) higher and has 1223 liters (43.19 ft3) bigger cargo space than Audi S4 (2017).
