GMC Sierra 3500HD (2020) is 887 mm (34.92 inch) longer, 204 mm (8.03 inch) wider, 613 mm (24.13 inch) higher and has 1480 liters (52.27 ft3) bigger cargo space than Mercedes CL-Class (2014).
Mercedes CL-Class (2014) is 549 kg (1,210 lbs) lighter than GMC Sierra 3500HD (2020).