GMC Sierra 3500HD (2014) is 987 mm (38.86 inch) longer, 481 mm (18.94 inch) higher and has 1451 liters (51.24 ft3) bigger cargo space than Opel Insignia (2017).
Opel Insignia (2017) is 52 mm (2.05 inch) wider and 961 kg (2,119 lbs) lighter than GMC Sierra 3500HD (2014).
