GMC Sierra 3500HD (2019) is 988 mm (38.90 inch) longer, 173 mm (6.81 inch) wider, 573 mm (22.56 inch) higher and has 1348 liters (47.60 ft3) bigger cargo space than Mercedes CL-Class (2014).
Mercedes CL-Class (2014) is 693 kg (1,528 lbs) lighter than GMC Sierra 3500HD (2019).