GMC Sierra 2500HD (2017) is 1202 mm (47.32 inch) longer, 248 mm (9.76 inch) wider, 537 mm (21.14 inch) higher and has 1418 liters (50.08 ft3) bigger cargo space than Opel Ampera (2017).
Opel Ampera (2017) is 947 kg (2,088 lbs) lighter than GMC Sierra 2500HD (2017).
