GMC Sierra 2500HD (2016) is 857 mm (33.74 inch) longer, 478 mm (18.82 inch) higher and has 1178 liters (41.60 ft3) bigger cargo space than Opel Insignia (2017).
Opel Insignia (2017) is 49 mm (1.93 inch) wider and 1305 kg (2,877 lbs) lighter than GMC Sierra 2500HD (2016).
