Audi A8 (2016) is 587 kg (1,294 lbs) lighter than GMC Sierra 2500HD (2017).
GMC Sierra 2500HD (2017) is 528 mm (20.79 inch) longer, 90 mm (3.54 inch) wider, 503 mm (19.80 inch) higher and has 1213 liters (42.84 ft3) bigger cargo space than Audi A8 (2016).
