GMC Sierra 2500HD (2014) is 470 mm (18.50 inch) longer, 133 mm (5.24 inch) wider, 479 mm (18.86 inch) higher and has 1218 liters (43.01 ft3) bigger cargo space than Mercedes S-Class (2020).
Mercedes S-Class (2020) is 773 kg (1,704 lbs) lighter than GMC Sierra 2500HD (2014).