Home · 2012 Kia Optima · Complaints

What 916 owners told NHTSA about the 2012 Kia Optima

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (916)Crash / fire / injury (106)Engine (397)Steering (187)Electrical system (122)Brakes (87)Fuel system (54)Transmission & drivetrain (54)Airbags (48)Speed control (40)Body & structure (39)Lights (31)

Newest first · 916 complaints · page 3 of 37

Jan 22, 2025Engine

On the evening of December 5, 2024 my 2012 KIA OPTIMA's engine completely seized out of no where while traveling on a very busy road where the speed limit is 50mph putting my life and other drivers that share the roads life in danger. Thank god I was able to succesfully merge over into a safe place as the car came to a hault. Previous to this incident the car was running perfectly fine with no dash lights on what so ever. Once I was in a safe place I called KIA headquarters immediatly, I was told that I have to pay to have the vehicle towed to the nearest dealership and that I would be reinbursed depending on the issue of the vehicle after being diagnosed. The very next morning I called KIA corporate to open a case for the vehicle, in which i was told that my specific year, make and models engine was under a lifetime warranty. I then recieved a call from the dealership Decmember 6, 2024 and i was told my optima would be diagnosed and if the issue is due to the KIA engine class settlement that the engine would be replaced free of charge and if it is not then I would have to pay $380 to have the engine repaired under the lifetime warrantly & that the car could not be looked at until December 16, 2024. Once December 16, 2024 came around I recieved a call from the KIA dealership and I was told that my vehicle could not be diagnosed due to the time frame in which i bought the vehicle and that I needed to have my car moved from their lot or I would get charged $80 a day storage fee so I had to have my vehicle towed back to my home where it is currently just sitting. To this day (January 22, 2024 I am still dealing with trying to communicate with KIA CORPORATE AMERICA to have this matter resolved for I am very aware of the engine recall issue for my specific year make and model. My vehicle has yet to be inspected and the only time the warning lamps came on was once the engine completely seized, all of the dash lights popped on.

NHTSA ODI 11637823

Jan 14, 2025Transmission & drivetrain

The contact owns a 2012 Kia Optima. The contact stated that while driving at various speeds, the vehicle hesitated while depressing the accelerator pedal. The check engine warning light eventually became illuminated, and the vehicle was taken to an independent mechanic to be diagnosed. The mechanic retrieved a fault code for the engine variable valve timing solenoid. The contact was informed that the engine variable valve timing solenoid needed to be replaced. The contact called a dealer and was informed that there were no recalls on the vehicle for the failure. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 130,000.

NHTSA ODI 11635841

Jan 8, 2025Brakes

The contact owns a 2012 Kia Optima. The contact stated that while driving at 55 -60 MPH, the vehicle lost automotive power and stalled. The contact was able to pull over to the side of the road. The contact became aware of smoke emitting from the vehicle. The check engine warning light was illuminated. The vehicle was towed to the residence and then to an independent mechanic where it was diagnosed that the engine failed and needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The vehicle was towed to the residence and was not being driven. The failure mileage was approximately 150,000.

NHTSA ODI 11634952

Jan 7, 2025Engine

While driving 2012 Kia Optima GDI home from work, the power suddenly stopped without warning with the engine, oil, and battery lights flashing on all at once. I was unable to accelerate whatsoever, so with the momentum of the vehicle I parked safely in a parking lot. There I discovered the car would not start and would give a loud clunking sound. A mobile mechanic confirmed that the engine was seized, and I had it towed to the nearest KIA service center. They were able to also confirm it was an engine seize, but insisted KIA would not replace the engine despite a recall notice of the motor of this vehicles make and model in 2017 (SC147).

NHTSA ODI 11634725

Dec 19, 2024Lights

My 2012 Kia optima headlamps are extremely dim, even though I’ve replaced the lightbulbs with the highest possible lumens, multiple times, the headlamp assembly continues to dim. This requires that I ride with my high-beams on to drive at night. The lights have been dimming for more than 20,000 miles, but they are almost useless at this point.

NHTSA ODI 11631665

Nov 29, 2024Steering

The steering is making a clunking noise when backing up and going forward at low speed. There is a TSB by Kia about the steering motor rubber gear spacer that simply disintegrates over time but Kia is only performing repairs on vehicles in warm humid areas up to South Carolina. Why up to South Carolina? Being we live on the Eastern End of Long Island in Southampton Town in New York : we are surrounded by the Atlantic Ocean to the South and Long Island Sound to the North. On Long Island, the temperature frequently approaches 100 degrees in the summer and is very humid also. I would say we qualify for a recall based on what the TSB says. There should be a recall for every Kia Optima along the Coastal United States that has this issue as it could become quite dangerous. From what I have heard and seen on line , it is a multi hour repair for several hundred dollars. The NTSB should get a recall done not a TSB.

NHTSA ODI 11627904

Nov 18, 2024BrakesEngine & coolingFire

The contact owned a 2012 Kia Optima. The contact stated that while at a stop light, smoke and flames were suddenly present coming from the engine compartment. The fire department was called to the scene and extinguished the fire. During the incident, the vehicle was destroyed and later towed to an inbound facility. No report was taken and no injuries were reported. The cause of the fire was not determined. The local dealer and manufacturer were not yet contacted. The contact was informed that the VIN was included in the NHTSA Campaign Number: 23V652000(SERVICE BRAKES, HYDRAULIC). The contact indicated that the vehicle had experienced that same failure listed in the recall. The failure mileage was 151,000.

NHTSA ODI 11625883

Nov 5, 2024

Paint is coming off all over the car. You may look at it at any time. This is a safety concern for our environment and to the child in my home. She likes to attempt to eat or at least put everything in her mouth. It is very visable. No No, The first bit of paint started coming off around a year ago and has progressively gotten worse.

NHTSA ODI 11623603

Nov 4, 2024Electrical system

The contact owns a 2012 Kia Optima. The contact stated the vehicle was taken to the dealer, where the recall repair of NHTSA Campaign Number: 23V652000(Service Brakes, Hydraulic) was performed; however, after the repair, the A/C system became inoperable, and the front passenger's side window failed to roll up or down when engaging the power window switch. The dealer was notified of the failure, but did not provide any assistance. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was approximately 100,000.

NHTSA ODI 11623453

Oct 27, 2024Transmission & drivetrainBody & structureEngineFire

Power train and engine failure and causing my Kia to catch on fire at 11:30 coming back home from work. I was Driving home and smell smoke and car was shaking and when I stopped at the highway to open and look fire was on while driving and I had to call 911 and stop the fire. I had some fire extinguisher in the car I stopped the fire and towed the car and I replaced engine and powered train For over $9000 between repairs and labor and transmission and engine

NHTSA ODI 11622174

Oct 23, 2024Visibility & wipers

The contact owns a 2012 Kia Optima. The contact stated that the front passenger's side window failed to roll up or down as needed. The vehicle was taken to the dealer; however, the contact was unaware of the diagnostic result, nor the parts that needed to be replaced to repair the vehicle. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 100,000.

NHTSA ODI 11621493

Oct 21, 2024Brakes

The contact owns a 2012 Kia Optima. The contact stated while driving at undisclosed speeds, the brake pedal was depressed and went to the floorboard. The contact stated that several times the brake pedal was depressed approximately a half-inch to an inch. There were no warning lights illuminated. The vehicle was taken to an independent mechanic, who replaced the brake master cylinder. The vehicle was repaired, but the failure recurred. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 35,000.

NHTSA ODI 11621075

Sep 23, 2024Fuel systemEngine

The contact owns a 2012 Kia Optima. The contact stated while driving at various speeds, the vehicle went into LIMP Mode and failed to exceed 61 MPH. The RPM failed to exceed 2,000 RPM. Additionally, the contact stated that the vehicle failed to exceed 45 MPH while driving uphill, and the vehicle failed to exceed 55 MPH while driving downhill. The contact scanned the vehicle with a vehicle scanner and retrieved codes indicating an oil control valve failure. The contact replaced the oil control valve; however, the failure recurred. The vehicle was taken to the dealer where the fuel rail system, the fuel tube clamps, and the bolts were replaced under NHTSA Campaign Number: 18V907000 (Fuel System, Gasoline, Engine); however, the failure persisted. The vehicle was taken back to the dealer several times. The dealer replaced the battery, the engine oil, and other unknown parts; however, the failure recurred. Additionally, the contact stated that the vehicle was experiencing excessive fuel consumption. The vehicle was not repaired. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 157,000.

NHTSA ODI 11615918

Sep 19, 2024AirbagsCrash2 injuries

The contact owned a 2012 Kia Optima. The contact stated that the vehicle was previously repaired under NHTSA Campaign Number: 18V363000 (Air Bags) however, it failed to prevent the recall safety risk. The contact stated that while his mother was driving at approximately 45 MPH with the grandmother seated in the front passenger seat, another vehicle cut in front abruptly and switched back into their original lane, causing the contact's mother to crash into the rear of another vehicle ahead. The air bags did not deploy. No warning light had illuminated. The contact's grandmother was taken to a local hospital for injuries including a swollen face, both arms harmed, broken teeth, 3 broken ribs, and back pain. The contact's mother was later taken in a personal vehicle to a local hospital for injuries sustained for bruising on their chest, back and neck pain, and an injured toe on her left. A police report was filed. The insurance provider deemed the vehicle totaled and took it to a tow lot. The manufacturer was made aware of the failure. The failure mileage was approximately 225,000.

NHTSA ODI 11615404

Aug 23, 2024Engine

Car went to limp mode and has code p1326. Car was towed to kia and waiting on determination of kia in korea to cover engine. Car has 63,000 miles

NHTSA ODI 11610532

Aug 21, 2024Engine

Driving on highway at about 60mph when the engine started knocking and the power decreased significantly. I pulled to the side of the road and called my day who came and brought his OBD 2 tester. The code was P1326 which is Knock Sensor. We had the car towed to a KIA dealer nearby and they updated the software. We picked up the car the next day. It seemed fine at first. Within two weeks the the same thing happened and we, once again had it towed to KIA. Within a few days, the service writer called and said that the engine needed to be replaced, but that KIA was denying an engine replacement. They said that they found sludge in the engine that in their opinion showed a lack of maintenance. We sent in receipts for oil changes every 5-6K miles. At this point, we do not have an answer regarding an engine replacement.

NHTSA ODI 11610060

Jul 31, 2024EngineFire

The engine caught fire and exploded after I parked it and exited the car and the recall repair was done on the engine July 5 2024 by Kia dealership.

NHTSA ODI 11605728

Jul 8, 2024Body & structure

Body paint chipping. Is known issue when speaking to insurance, Kia dealer and paint body repair.

NHTSA ODI 11600260

Jul 5, 2024Electrical systemBody & structure

Snow White Pearl Paint is peeling at numerous location Rear driver's side window button not working Siruis XM radio not working .Dealt with XM and stated it was a Kia antenna however Kia tells me its Sirius xm problem

NHTSA ODI 11599208

Jun 17, 2024BrakesFire

The contact owned a 2012 Kia Optima. The contact stated that while driving at an undisclosed speed, smoke started to enter the vehicle. No warning lights were illuminated. The contact stated a bystander yelled at her telling her that the vehicle was on fire, and the contact exited the vehicle. The vehicle then exploded. The fire department was able to extinguish the fire. A police report and a fire department report were filed. No injuries were sustained. The vehicle was towed to a tow yard, and then it was towed to a Kia dealer. The vehicle was deemed a total loss by Kia. The contact was relating the failure to an NHTSA Campaign Number: 23V652000 (Service Brakes, Hydraulic) letter she received. The manufacturer was made aware of the failure and a case was opened. The failure mileage was approximately 100,000.

NHTSA ODI 11594772

Jun 13, 2024SteeringElectrical system

The contact owned a 2012 Kia Optima. The contact stated while driving 50-60 MPH, the vehicle experienced excessive steering efforts, which required keeping both hands on the steering wheel to prevent the vehicle from drifting out of the lane. The contact stated that the failure recurred while driving on one occasion, causing the passenger's side-view mirror to strike another vehicle, and the side-view mirror was damaged. There was no injury sustained. A Police report was filed, but the police report information was not available. Additionally, the contact stated that after the vehicle had been turned off for 10 minutes, the vehicle failed to restart and was jumpstarted. The contact stated that the failures recurred several times. The vehicle was taken to an unknown dealer, where it was diagnosed with steering and electrical failures. The vehicle was not repaired and was sold. The manufacturer was notified of the failure and referred the contact to the dealer for assistance. The failure mileage was unknown. The VIN was not available.

NHTSA ODI 11594203

Jun 8, 2024Engine

I started the car up no lights on, started fine, no warning symptoms like loss of power, no oil consumption nothing! Started an hour and a half drive to visit family and I started hearing a weird sound almost like plastic was flapping around on the bottom. Turned down the music and it was only making this weird sound every 5-10 seconds. Pulled off of the road shut the car off and checked under the hood, the oil everything seemed fine. Started it up and heard the sound again and suddenly became worse and came to the conclusion it’s a rod knock. Had to get off the busy road so continues for maybe 1 mile and every dash light came on shut it off waited for a trailer, once we got it on the trailer the lights were gone. The dealership near me is saying they can’t do anything due to a recall update not being done but I had a newly programmed ECU that was put in in March of 2023 and I was some research and i found a few things stating the ECU would be completely up to date but kia is fighting me on it. I have also been update to date on maintenance records. Since its been at the dealership I’ve asked for the other 2 recalls that are open on it to be done while I figure out what to do with it and they bypass me asking everytime.

NHTSA ODI 11593199

Jun 7, 2024

my snow white pearl paint is peeling on several sections of the car. I obtained quotes from 2 body shops and its recommended to repaint the entire car. peeling started in 2018 and has continued to become worse every day.

NHTSA ODI 11592960

May 29, 2024Engine

I was driving down the highway on my way to work and all of a sudden I lost power. The car was still on but it wouldn't go very fast and started smoking. Then a knocking noise started. I had to get it towed home. Car is not running. KIA refuses to take responsibility even though there is a known issue with this vehicle.

NHTSA ODI 11591392

May 22, 2024Brakes

The contact owns a 2012 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 manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of the issue and confirmed that parts were not yet available. The manufacturer was made aware of the issue and confirmed that parts were not yet available. The contact had not experienced a failure. Parts distribution disconnect.

NHTSA ODI 11590233

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Working with the data? Download all 916 complaints as CSV · fetched from NHTSA July 19, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2012 Kia Optima verdict →