GMC Sierra 3500HD (2019) is 1228 mm (48.35 inch) longer, 185 mm (7.28 inch) wider, 520 mm (20.47 inch) higher and has 1328 liters (46.90 ft3) bigger cargo space than Kia Optima (2020).
Kia Optima (2020) is 1353 kg (2,983 lbs) lighter than GMC Sierra 3500HD (2019).
