Audi A5 (2015) is 961 kg (2,119 lbs) lighter than GMC Sierra 2500HD (2019).
GMC Sierra 2500HD (2019) is 988 mm (38.90 inch) longer, 181 mm (7.13 inch) wider, 585 mm (23.03 inch) higher and has 1247 liters (44.04 ft3) bigger cargo space than Audi A5 (2015).
