The contact owns a 2015 Kia Optima. The contact stated while driving 70 MPH, the vehicle stalled without warning. The contact mentioned that the vehicle was in limp mode. The contact attempted to restart the vehicle with the PUSH TO START button however, the vehicle failed to operate. The contact mentioned that there was a waiting period before being able to restart the vehicle. The vehicle was taken to an independent mechanic where the failure was undetermined. The vehicle was taken to the dealer where the failure was undetermined. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 82,000. Engine has been replaced. At time of the incident on 9/17/21, no DTC code was registered.

- West Allis, WI, USA

The contact owns a 2015 Kia Optima. The contact stated while driving 70 MPH, the vehicle stalled without warning. The contact was able to coast the vehicle to the shoulder of the road after the failure. Due to the failure, the contact had the vehicle towed to the dealer. The contact was then informed by the dealer that the engine had locked up and needed to be replaced. The dealer contacted the manufacturer and she was informed that since an engine software update was not performed on the vehicle, they would not assist with the repair of the vehicle. The contact spoke directly to the manufacturer and the manufacturer again declined to assist. The vehicle was not repaired and remained in the possession of the dealer. The failure mileage was 90,423.

- Sacramento, CA, USA

The contact owns a 2015 Kia Optima. The contact-??s dad stated that while driving approximately 65 MPH, there was an abnormal sound coming from the engine compartment. The contact stated that the check engine warning light was illuminated. The contact pulled over and had the vehicle towed to a local dealer where it was diagnosed with needing the starter replaced. The vehicle was repaired but continued to experience failure. The manufacturer was informed of the failure and informed the contact that the VIN was not under a recall for the starter. The failure mileage was approximately 53,000.

- Carnegie, PA, USA

The contact owns a 2015 Kia Optima. The contact stated that while his wife was driving at an undisclosed speed, the vehicle came to a complete stop at a stop sign and loss motive power. The contact towed the vehicle to his residence. The contact who works as an independent mechanic, self-diagnosed the failure as the engine seized and was not moving with the crankshaft. There was no metal found in the oil or oil filter. The dealer was made aware of the failure and informed the contact there were no recalls associated with the VIN. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 122,000.

- Jacksonville, AR, USA

There has never been any problems with the vehicle. No clicking no lights. I took it before time for an oil change and tune up. The car just stopped at the red light. I had it towed to Kia. It-??s been there now a week shy of 2 months. I have to call for updates no one would call me back. I called kia recall department. A lady told me car has 2 recalls on it but they will NOT FIX IT due the time me no having warranty!

- Phoenix, AZ, USA

I was driving my car and was hearing a clicking/thumping sound, until I turned left into a street where the motor just started shaking and making a louder noise. I started to press on the brakes because the sound and feeling of the car was very unusual. I came to a complete stop and put my car in park and waited where finally the engine just cut off even though the lights stayed on. I turned my key back to turn of the car and tried to turn it back on but my motor would just shake and my car would not turn on. i stepped outside and noticed there was oil spilling from under my car. I got it towed to a mechanic where they informed me my rod bearing came lose and punctured a hole in my engine. I called the KIA assistance center and said this was due to the recall SC212, but when i called a KIA dealership they said they could not cover the damage. Turns out this issue was part of a product improvement campaign which KIA would update the ECU in my vehicle.

- Houston, TX, USA

The contact owns a 2015 Kia Optima. The contact had initially taken his vehicle to a local dealer to be serviced under NHTSA Campaign Number: 21V331000 (Service Brakes, Hydraulic). Upon return of the vehicle, the contact stated that the vehicle failed to start up after multiple attempts. The contact then took the vehicle to an independent mechanic where the alternator was replaced. The independent mechanic also informed him that the battery would charge to full capacity and referred him back to the dealer. The vehicle was towed to the dealer, but the dealer could not find a failure after an inspection. After a few weeks, the contact stated that the failure returned as the ABS warning light illuminated on the instrument panel. The contact also stated that while his son was driving at 50 MPH, the vehicle stalled while on the highway. The contact was able to restart the vehicle and had the battery checked by another independent mechanic. The contact-??s son was informed that the battery was not linked to the failure. The contact-??s wife had called the manufacturer and filed a complaint. The vehicle has been repaired. The failure mileage was approximately 60,000. The VIN was not available. Consumer would like to withdraw the complaint since it has been repaired.

- Derby, KS, USA

I was driving on the highway going about 55 miles per hour when suddenly the dashboard lights illuminated and car seemed to power down quickly. I barely had time to pull over to the shoulder of the road when the car completely shut down. I could not get the car to start backup and I had to call a towing company to the scene to tow the car to the Kia dealership. My safety and the other occupants safety were put in grave danger, especially driving on a highway where the speed limit is minimum 55 miles per hour. The car dealership confirmed the problem with me, but there is a significant wait time of 2 weeks or more before they can begin performing necessary repairs to the vehicle. Their excuse was an abnormally high number of other Kia Optimas ahead of my vehicle, waiting on parts from Korea, and the warehouse being backup due to the parts shortage. There were no warning lamps or noises prior to the car completely shutting down while driving 55 miles per hour on the highway. It was sudden and caught me off guard and I tried not to panic during the entire dangerous and scary situation. I have been without a replacement vehicle for over two weeks because you cannot get the rental/loaner coverage until the car has been formally diagnosed by a technician. I am paying out-of-pocket until I get the rental car coverage that Kia told me I would qualify for once the car is officially diagnosed and a timeframe is given for estimated date of full repair and pick up of the vehicle.

- Chicago, IL, USA

While traveling on a city street at approximately 40 miles per hour, the engine seized and stalled. After coasting to the shoulder without power, the engine would not restart. Vehicle was towed to local dealership and I was informed it has complete engine failure. Dealership stating Kia corporate refusing to repair vehicle despite multiple complaints of engine failure in this model.

- Beaumont, CA, USA

The contact owns a 2015 Kia Optima. The contact stated while driving at 15-20 MPH, the vehicle inadvertently stalled and she saw smoke coming out from underneath of the hood of the vehicle. There were no warning lights illuminated. The contact stated she was able to exit the vehicle. The vehicle was towed to the contact's residence, then it was towed to the dealer who diagnosed that the engine had ceased. The dealer informed the contact that she would be responsible for the cost of the repair. The vehicle was towed to a second dealer (Kia of Riverdale 1 Windbeam Rd, Riverdale, NJ 07457). The manufacturer was notified of the failure and did not provide any assistance due to the fact that the previous owner of the vehicle had not completed the software update of the vehicle. The contact stated the failure was related to NHTSA Campaign Number: 21V331000 (SERVICE BRAKES, HYDRAULIC). The vehicle was not repaired. The approximate failure mileage was 76,000.

- Kearny, NJ, USA

The contact owns a 2015 Kia Optima. The contact stated while driving approximately at 40 mph when the vehicle lost motor functionality. The contact was able to pull over and smelled a burning odor coming from the engine compartment. The vehicle was towed to the contact's residence. The contact stated no warning lights were illuminated. The contact stated that they spoke to a local dealer and was advised to not bring the vehicle in for a diagnosis. The manufacturer was informed of failure and told the contact they were unable to assist. The failure mileage was approximately 96,127.

- La Puente, CA, USA

Driving on the freeway at 60-65. car started slowing down. bumper to bumper traffic. car stops. KIDS in car. most terrifying moment in life. get towed finally they took to KIA dealer Cleveland Ohio.. engine locked. $4K to repair. KIA would not warranty any of it. 102K miles on engine. frequent oil changes. 2015 was not covered on the recall. This is un acceptable they know its a problem.

- Cleveland, OH, USA

The contact owns a 2015 Kia Optima. The contact received notification of NHTSA Campaign Number: 21V331000 (Service Brakes, Hydraulic) however, the part to do the recall repair was not available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact stated while driving 60 MPH, the vehicle stalled without warning. The contact was able to coast the vehicle off to the shoulder of the roadway. The contact mentioned that the battery was drained from the engine not turning off. The vehicle was towed to the dealer but not diagnosed nor repaired. The vehicle was undrivable. The manufacturer was notified of the failure. The failure mileage was approximately 56,000. Parts distribution disconnect.

- Seattle, WA, USA

So we have a 2015 Kia Optima. On June 10 2021 our car was completely fine just did our normal oil change, tune up, etc. it was running and starting just fine. The next day June 11th, 2021 my husband was on the highway and getting off at his exit and the car suddenly went into -??limp mode-?? it-??s a safety mechanism on the car to stop it from completely blowing the engine and destroying other things. He was able to get the car home but was only able to go 25 miles a hour. The car is now currently sitting in our drive way throwing a whole bunch of different codes. First it was a rod in the engine and then now a misfire when the car hasn-??t moved in over a month. From what I hearing from the dealership and other people this is common with the GDI engines. We are now out of a car and don-??t even know what-??s completely wrong with it. We-??ve barely had a year of that.

- Dayton, OH, USA

Engine oil consumption is extremely high with no leaks and caused damage to the engine. Causing car to quit and lose power. I have been doing my oil changes correctly.

- Hazard , KY, USA

While driving 55MPH on highway vehicle suddenly stalled. I was able to coast to the shoulder on the right. I was not able to restart vehicle. Vehicle left on highway to be towed.

- Hobart , IN, USA

The contact owned a 2015 Kia Optima. The contact stated while driving at various speeds, the vehicle stalled and failed to accelerate while the accelerator pedal was depressed. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic and diagnosed as an engine failure. The vehicle was then towed to the dealer and the dealer informed the contact that they needed the maintenance history receipts. The vehicle was not diagnosed nor repaired and remained at the dealer. The manufacturer was not made aware of the failure. The failure mileage was 98,978.

- Lancaster, CA, USA

When I drive my car it smells just like it is burning or melting in the motor, it comes thru the vents and smells awful. It has only smoked a couple of times when I have turned it off. I have had it looked at but at first they couldn't find the problem. The second time I had it checked out they said that the changed the HECU on my car but it still smells like it is burning. It has been doing it for about 3 months.

- Lake City, FL, USA

I-??ve completed the recall on Saturday it took them less then a few minutes even though the invoice said 0.00hrs. I showed that I had brake fluid leaking and the car smokes but was told to come back if things got worse. Saturday night I was driving to the house with my fiancée and the car started slowly if down, the check engine light came on. Then the car shut off in the middle of the highway after a while it just cut back on and smoke all the way to the house. If there was someone behind me I would have cause a accident but it not within my control. My car has randomly shut off while driving and a while later coming idling again, today making the 5th time with in 3days

- Birmingham , AL, USA

2015 Kia Optima approximately 120xxx miles, daily driver Regular maintenance on vehicle. Engine failed as I was driving to doctor appointment. No warnings, no fluids leaking, no irregular gauge readings, no lights. Vehicle had to be towed to nearest dealership. Confirmed engine failure, failed bearing test. Contacted Kia Motors Consumer related to failed engine. No update on engine repair.

- Moultrie , GA, USA