GMC Sierra 3500HD (2015) is 821 mm (32.32 inch) longer, 181 mm (7.13 inch) wider, 508 mm (20.00 inch) higher and has 1451 liters (51.24 ft3) bigger cargo space than Mercedes E-Class (2014).
Mercedes E-Class (2014) is 823 kg (1,814 lbs) lighter than GMC Sierra 3500HD (2015).