Audi A8 (2014) is 718 kg (1,583 lbs) lighter than GMC Sierra 3500HD (2015).
GMC Sierra 3500HD (2015) is 563 mm (22.17 inch) longer, 87 mm (3.43 inch) wider, 491 mm (19.33 inch) higher and has 1617 liters (57.10 ft3) bigger cargo space than Audi A8 (2014).
