GMC Sierra 2500HD (2017) is 858 mm (33.78 inch) longer, 478 mm (18.82 inch) higher and has 1178 liters (41.60 ft3) bigger cargo space than Opel Insignia (2015).
Opel Insignia (2015) is 49 mm (1.93 inch) wider and 946 kg (2,086 lbs) lighter than GMC Sierra 2500HD (2017).
