GMC Sierra 3500HD (2014) is 1143 mm (45.00 inch) longer, 222 mm (8.74 inch) wider, 537 mm (21.14 inch) higher and has 1511 liters (53.36 ft3) bigger cargo space than Mercedes C-Class (2017).
Mercedes C-Class (2017) is 1174 kg (2,588 lbs) lighter than GMC Sierra 3500HD (2014).
