GMC Sierra 1500 (2016) is 366 mm (14.41 inch) longer, 172 mm (6.77 inch) wider, 402 mm (15.83 inch) higher and has 1218 liters (43.01 ft3) bigger cargo space than Kia Optima (2016).
Kia Optima (2016) is 400 kg (882 lbs) lighter than GMC Sierra 1500 (2016).
