Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2011 Kia Optima owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2011 Kia Optima. The contact stated that while the vehicle was parked in a parking lot, he noticed the vehicle started smoking heavily from under the hood, and shortly thereafter, the vehicle fully ignited into flames. The vehicle was occupied during the fire. The contact stated that he noticed smoke emerging from the driver-side section of the hood. Furthermore, the contact noted that the power door locks failed to unlock automatically, requiring him to manually unlock the door to exit the vehicle safely. The color of the smoke started off light and quickly turned black. The contact stated he noticed a burning electrical odor during the fire. The fire started at underneath the hood, and stayed in the engine bay. No property damage. The location of the fire was the engine compartment. The fire was extinguished by the local fire dept by water. …
The contact owns a 2011 Kia Optima. The contact received notification of NHTSA Campaign Number: 23V652000 (Service Brakes, Hydraulic) however, the part to do the recall repair was not yet available. The contact stated that the vehicle failed to start up after not being drive for a while. The check engine warning was illuminated. The vehicle was taken to a local dealer to be diagnosed with an unknown result. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 180,000.
I was having trouble with my left driver tire. 2 mechanics went to test drive the car to see what the problem was. As they were driving, the car died. They got it started but it ran horrible back to the garage. When they pulled in the driveway of the garage, the car started on fire. It was an engine fire but undetermined what exactly was the cause. The vehicle was looked over by the insurance claims adjustor. I am not sure if sluggish driving had anything to do with the fire. The car is totaled.
I own a 2011 Kia Optima, VIN [redacted]. My vehicle was taken to Rockwall Kia on August 25, 2026, for completion of NHTSA Safety Recall 23V-652 / Kia SC284TF involving the HECU fuse. The dealership replaced the HECU multi-fuse and label kit. Before the recall repair, the vehicle was operating normally. The same day I picked the vehicle up after the recall repair, the vehicle began dying while I was driving. I also noticed a burning smell. I returned the vehicle to Rockwall Kia. Their August 31, 2026 repair order documents my complaint and states that the vehicle would die while driving and that this problem "DID NOT BEGIN UNTIL AFTER RECALL COMPLETED." The repair order instructs the technician to inspect whether the recall was completed properly and diagnose the concern. …
There's something going on at the Kia dealership in Wake Forest (Westgate). Per the current recall notice, the lights came on that were highlighted in the notice ( "MIL" , ABS warning light) so I had my car towed into the dealership. They claimed my car had a bad battery and the problems were not due to the recall situation. I took my car out of there and straight to auto zone, about 200 feet from the dealership. My battery tested fine. Not only this, the lights (check engine, and others) were no longer illuminated and the radio was mysteriously working again. I'm not sure what they did to my car, but they charged me over $200 for a diagnosis. Not only this, they cited several other issues with the vehicle that I nor my master mechanic were aware of. They had my car for several days without so much as a phone call. …
It appears I have a defective oil pump in the car which I think is what caused the engine to go bad to begin with. I am requesting that KIA of Denham Springs be authorized by the main office of KIA to install a new oil pump in my car after the new motor is installed, otherwise the new motor will probably go bad and will result in Kia having to install another motor for the car. I hope you can step in and assist me in getting a new oil pump installed as this would be a safety issue of the car breaking down on the road and could result in myself or other passengers possibly stranded on the highway . A engine compartment fire could happen if the engine gets too hot due to the deflective oil pump no keeping all engine parts oiled properly by the defective Oil Pump. I am requesting that the National Highway Traffic Safety Administration's office look into this matter. …
Went to dealer under warranty because of check charging system (hybrid) 2011 Kia Optima They said they did an update It did not help it has been constantly doing the same thing I loose power I have to pull over and start the engine The check engine light stays on This is dangerous because I am driving down the street and it goes into the safe mode I have no power I need help Kia said they will not do anything the dealer is an idiot told me I needed a transmission Please help me
Defect discovered by KIA September 2023 Affected owners not notified until November 2023 As of March 1, 2024, no updates. After six months, if no "fuse" is available, entire HECU should be replaced. Vehicle's exterior has significantly deteriorated since being required to park outside. Additionally, seriousness of fire hazard restricts use of car.
My car won't crank. Starter is not working. Ask if warranty or recall. Let's see if they accept warranty for starter replacement. My car towed to Kia of Lincoln in Lincoln, Nebraska where the car parked there right now. Please contact Kia at Lincoln and I better hope warranty are accepted and diagnostic are free too. Thank you!
HYDRAULIC ELECTRONIC CONTROL UNIT (HECU) can start a fire, I was informed not to park the car in a garage or near other cars, also it can also catch fire while driving the car!! I was notified months ago of this problem !! I called a KIA dealer that got me no where !! KIA recall #SC284TF
NHTSA investigations
Non-crash Vehicle Fires
During this Preliminary Evaluation (PE), the Office of Defects Investigation (ODI) assessed the scope, frequency and potential safety-related consequences of non-crash vehicle fires caused by both engine failures and failures of other vehicle systems/components in model year (MY) 2011-2014 Kia Optima, MY 2011-2014 Kia Sorento and MY 2010-2015 Kia Soul vehicles equipped with Theta II, Gamma, Nu and Lambda II engines…
Non-crash Vehicle Fires
In a letter dated June 11, 2018, the Center for Auto Safety (CAS) petitioned the National Highway Traffic Safety Administration (NHTSA) to initiate a safety defect investigation into non-collision related fires on model year (MY) 2011-2014 Kia Optima and Sorento, and Hyundai Sonata and Santa Fe vehicles. In a letter dated July 24, 2018, CAS requested that MY 2010-2015 Kia Soul vehicles be added to the petition.
Electrical complaints in other Optima years
Frequently asked questions
How common are electrical problems on the 2011 Kia Optima?
NHTSA has 63 complaints about the electrical system of the 2011 Kia Optima, 11% of the model year's 594 complaints.
Is there a recall for 2011 Kia Optima electrical problems?
No. NHTSA lists no electrical system recall for the 2011 Kia Optima, though it has 5 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2011 Kia Optima electrical problems start?
Half of the complaints with a recorded mileage happened before about 86,000 miles, and 18% before 25,000 miles.
Is it dangerous?
Owners linked 1 crash, 8 fires and 0 injuries to electrical system problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.