Kia Optima 2012 Optima 2012 for sale. New engine. I just changed the engine and gearbox, and its matters are good. The air conditioner is good, but the evaporator is leaking and needs to be replaced. It's new for 250. The rest of the engine and the car's undercarriage are new. It was fully repainted, and I don't know about any accidents it had.