Audi S6 (2017) is 820 kg (1,808 lbs) lighter than GMC Sierra 3500HD (2018).
GMC Sierra 3500HD (2018) is 768 mm (30.24 inch) longer, 161 mm (6.34 inch) wider, 537 mm (21.14 inch) higher and has 1592 liters (56.22 ft3) bigger cargo space than Audi S6 (2017).
