GMC Sierra 3500HD (2014) is 974 mm (38.35 inch) longer, 172 mm (6.77 inch) wider, 509 mm (20.04 inch) higher and has 1481 liters (52.30 ft3) bigger cargo space than Kia Optima (2017).
Kia Optima (2017) is 1059 kg (2,335 lbs) lighter than GMC Sierra 3500HD (2014).
