Two problems related to owners/service manual have been reported for the 2013 Kia Motor Optima. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2013 Kia Motor Optima based on all problems reported for the 2013 Optima.
During a commute to worksite the car was driving normally for the first 10 miles. No sounds, no dash lights illuminated. No signal that anything was wrong. As I drove normally through the route, I entered the highway and accelerated to nearly 65 mph. After a moment or so of driving the car suddenly felt as if the engine had no power. I pulled my foot off the gas, then I checked the dash lights, I made sure the vehicle was in the proper automatics mode and not manual (it felt like it was thrown into neutral or a lower gear), I also verified cruise control was off. Everything seemed fine. I pressed the gas to accelerate back up to speed and the car began shaking very vigorously. Then the engine light came on. Because I was not in a safe area to stop, I tried to coast to the nearest exit. I imagine I was coasting and accelerating intermittently (for only a few seconds at a time) for anywhere from one-half to two miles before the next exit. It is hard to guess the distance because it was dark during the incident. Once I made it to the exit, the engine was no longer providing power at all - meaning I would press the gas and nothing would happen. The car would not move, the engine would not even rev. I called a tow truck and had it towed to the dealership. The dealer said that because the car did not have a code of p1326 that the issue was not covered under kia's extended engine warranty. I am trying to fight for them to honor the warranty. No luck so far. They quoted a $7500 repair. Car is perfectly maintained. I just put new spark plus and a new serpentine belt on 9 weeks ago (at the kia dealership of course- only place I do maintenance at).
During the second oil change at the dealership, I indicated that the vehicle's exhaust was very strong and was coming into the vehicle both at speed and while sitting. The service technician stated that the vehicle needed to have only premium fuel in it to stop the issue. The owners manual does not state that this is the case but in order to prevent the strong exhaust, we switched to only use premium fuel which prevented the majority of the strong fumes but not all. In getting the vehicle's third oil change, the oil was extremely dirty and the service technician stated that he had seen no reason why a vehicle of such low mileage should have oil anywhere near the condition that it did.