GMC Sierra 3500HD (2014) is 1436 mm (56.54 inch) longer, 246 mm (9.69 inch) wider, 422 mm (16.61 inch) higher and has 1505 liters (53.15 ft3) bigger cargo space than Mercedes B-Class (2017).
Mercedes B-Class (2017) is 1224 kg (2,698 lbs) lighter than GMC Sierra 3500HD (2014).