GMC Sierra 2500HD (2019) is 845 mm (33.27 inch) longer, 175 mm (6.89 inch) wider, 511 mm (20.12 inch) higher and has 1217 liters (42.98 ft3) bigger cargo space than Kia Optima (2015).
Kia Optima (2015) is 1206 kg (2,659 lbs) lighter than GMC Sierra 2500HD (2019).
