NHTSA Complaint #11605529 — 2016 KIA OPTIMA

I bought the vehicle used in 2022 and since then the vehicle has misfired on 2 separate occasions while driving requiring it to be towed. I’ve had to change the spark plugs and coil packs 4 different times due to the vehicle misfiring. I contacted Kia when the issue first began and was informed that my vehicle is one included in a class action lawsuit for engine failure, and was given a Case Number, but was told the only way they will cover repair/ replacement of the engine is if a specific error code was shown at the time of engine failure. The last 2 times I had to change my spark plugs were within a month of each other, so the vehicle was towed to Kia where they informed me that they recommended a combustion chamber cleaning and once again replacing the spark plugs. However, this was not a final diagnosis as to why the vehicle was misfiring, and they stated the vehicle may still misfire even with those services. Upon having the combustion chamber cleaned completed at a different location, and once again replacing the spark plugs, the engine locked up in the middle of the road and would not start again. the vehicle has been non-driveable since mid June and is currently in a shop awaiting repairs.