RoadVitals

2015 Kia Optima Driver assistance Problems

Owner-reported complaints naming the driver-assistance system, filed with NHTSA

Data refreshed

Driver assistance reportsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
56
Latest May 16, 2026
Share of all reportsThis category as a share of every owner report on file for this model year. One report can name more than one component, so the categories overlap.
6%
of 1,003 total
Crash or fire reportedReports in this category whose submitter recorded that a crash or a fire occurred. The reporter's own answer on the NHTSA form, not a verified finding.
6
Injuries or deaths reportedTotals the submitters entered on their own reports in this category. Not verified by NHTSA and not a casualty statistic.
4

What this page shows

Reports naming forward-collision avoidance, lane keeping, back-over prevention, cruise control and related electronic driver-assistance systems. Every record below is an owner-reported complaint about the 2015 Kia Optima submitted to NHTSA — not a confirmed defect, not a recall and not a manufacturer bulletin. 56 reports on file name it.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

Owner reports naming driver-assistance

The 25 most recent of 56, in the owner's own words

Driver assistance
Filed May 16, 2026

They were speeding with their phone in a phone stand watching a show while on the freeway

NHTSA ID
11738230
Incident
May 13, 2026
Driver assistance
Filed Feb 23, 2026

Nothing

NHTSA ID
11719898
Incident
Feb 20, 2026
Driver assistance
Filed Dec 29, 2025

The car is experiencing the same problem reported on technical service bulletin SA187 (Blind spot detection (BSD) system logic improvement (SA 187)) BUT KIA states my VIN number is not listed under the service bulletin and therefore I have to pay $189 to get a software upgrade done. The "Check BSD system" illuminated in the instrument cluster has been cleared twice by my mechanic and still comes back after a few days. To me this issue should have been made a recall because of its criticality... the BSD system is a core safety feature of cars and reduces accidents substantially. There was no way for me to know my car has this problem unless it is made a recall. I have NOT had any accident related to this issue but i had to pick an incident date to complete this complaint. I have called KIA customer service at 1-800-333-4542 twice to find out whether the VIN number should be included in the service bulletin and the answer was no and whether i should report this to NHTSA with the possibility that certain VIN numbers were left out of the service bulletin in error. No answer as to what to do to investigate this was given by KIA. That's why i'm reporting this on here. The service bulletin has been attached to this complaint. My question to NHTSA is whether certain vehicles were left out of the service bulletin in error and whether the manufacturer is liable for the repair at no cost to the consumer. If NHTSA finds out the manufacturer is liable will you notify them to pay on a case per case basis or will you make this service bulletin a recall? Again this is SAFETY HAZARD that can cause crashes and accidents. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID
11707481
Incident
Dec 1, 2025
Driver assistanceEngine
Filed Apr 29, 2025

I am contacting you regarding my 2015 Kia Optima EX (VIN: [XXX] , while driving, I experienced a sudden strong burning smell followed by heavy white smoke from the engine area. Shortly after, the engine stalled, and the vehicle had to be towed. I have verified that there are no open recalls or settlements listed for my vehicle. However, based on the known engine issues affecting similar models, I am respectfully requesting goodwill assistance from Kia to repair or replace the engine. I have always taken good care of my vehicle, and I believe this issue may be related to broader known concerns with the engine models from those years. I would appreciate your help in reviewing my case and offering any available support to resolve this issue. Thank you for your time and consideration. I look forward to your positive response. Sincerely, [XXX] Pho [XXX] ail: [X [XXX] [XXX] [XXX] SUANT TO [XXX] FOIA), 5 U.S.C. 552(B)(6) INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID
11657407
Incident
Apr 28, 2025
Driver assistanceEngine
Filed Mar 25, 2025

When driving on the highway my car suddenly started to stall with me on the highway. It went from 80 miles per hour to 20 miles per hour and then completely shut off in the lane of the highway. Thankfully I was able to pull over to safety. I attempted to start again, and the engine started with a weird noise coming from it. I had it towed to my local Mechanic who told me that my engine is part of a safety recall.

NHTSA ID
11650475
Incident
Mar 19, 2025
Driver assistanceSteering
Filed Sep 19, 2024

The contact owns a 2015 Kia Optima. The contact stated while driving at an undisclosed speed, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. Additionally, the steering seized. The contact stated that the steering wheel was difficult to turn, and the vehicle lost motive power. The vehicle was restarted; however, the failure reoccurred. The vehicle was towed to the residence. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The manufacturer was made aware of the failure. The failure mileage was approximately 174,000.

NHTSA ID
11615440
Incident
Sep 17, 2024
Mileage
174,000 mi
Driver assistanceElectricalEngine
Filed Sep 9, 2024

On or about 13 May 2024 my family and I traveling. During the travel the vehicle displayed “Hybrid System Stop and Do Not Drive”. We took it in to Kia during the time that they had the vehicle, they informed us that it needed an ECU update (recall). When services were finished, we picked up the vehicle and was made to pay for services that were part of the recall. When we left the dealership, the lights on the dashboard appeared 1. Engine, 2. HEV. We called the dealership back and informed them what happened. They told us to take the vehicle back to them. After checking it, they informed us that due to the update that was done to the vehicle it triggered faults in the battery. They informed us we would have to replace the Hybrid Battery that would cost us about $13,000. We stated to them our vehicle wasn’t having battery issues when we initially turned the vehicle in for service. They refused to assist and stated it wasn’t there responsibility even though it was given to us with these faults. We left the dealership and after driving for a few minutes, the warning sign came on and the car began to smell like smoke. I contacted KIA Corporate and informed them that the vehicle displayed a message on the dashboard and smoke. The gentleman I spoke to informed me not to drive the vehicle and park it away from other vehicles and to get the vehicle to KIA to check services. We took it to a different KIA for services. They informed us that the hybrid battery needed to be replaced and the cost. I explained to them the recall issue and that the vehicle was given to us with the issues that started to occur after the update. They said it wasn’t their responsibility and that they weren’t going to fix the damages or issues that were caused by another dealership. I called KIA Corporate and informed them of the situation and how the dealership refused to make repairs although they knew the hybrid battery issues were triggered from the recall updates/repairs.

NHTSA ID
11613568
Incident
May 17, 2024
Driver assistanceEngine
Filed Sep 4, 2024

The contact owns a 2015 Kia Optima. The contact stated while driving uphill at 20 MPH, the vehicle hesitated and the accelerator pedal was depressed; however, the vehicle stalled. The contact stated that the check engine warning light was illuminated. The local dealer was contacted. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The approximate failure mileage was 120,000.

NHTSA ID
11612591
Incident
Aug 31, 2024
Mileage
120,000 mi
BrakesDriver assistanceOther / unspecified
Filed Sep 2, 2024

On May 11, 2024, we took our 2015 Kia Optima to Hutchinson Kia Service Center 3931 River Pl, Macon, Ga. due to brakes not working. When you apply brakes the vehicle would not stopped you would have to apply the emergency brakes for a complete stop. On that day, I was told no one was there to check my brakes due it was a Saturday and would need to schedule another appointment when they could do a brake diagnostic. The next appointment was June 4,2024, on that day we had the vehicle towed due to brakes. Today is September 2, 2024 and our vehicle is still there. On July 12, 2024, we were contacted staying vehicle was repaired and the problem wa a pin hole in the right brake line. We picked up the vehicle proceeded home at the first traffic stop same problem happen with the brakes.We returned immediately back to Kia Service center, explaining the same problem still exists. After vehicle being there for 2 more weeks, Nick with Kia Hutchinson Kia called stated there was a problem with ABS system and vehicle would be ready on August 21,2024. Well the still have my vehicle and no updates. When you call they put on hold and never comeback. If you go over the Service Manager is always out and no one can give you and update

NHTSA ID
11612100
Incident
May 11, 2024
Driver assistanceEngine
Filed Jun 28, 2024

Car would not drive faster than 25 mph. Check engine light on codes p1326 and p0014. Not eligible for ki engine settlement but have the same issue..

NHTSA ID
11597364
Incident
Jun 21, 2024
BrakesDriver assistanceElectrical
Filed Apr 30, 2024

- The issue occurred for the first time 4/30/2024 - The following 3 warning lights appeared while I was driving: ABS, Traction Control, and Brake - I took the vehicle immediately to a facility to have the warning codes read. The printout showed: C2402 & C2380 - The warning lights remain illuminated every time the vehicle is turned on - I believe there is a safety concern of a potential fire or brake failure

NHTSA ID
11586221
Incident
Apr 30, 2024
Driver assistance
Filed Apr 28, 2024

Not sure what the exact problem is and my mechanic cannot figure out either, I had the car a little over a year purchased from carvana! First few months the brakes started messing up got caught in the rain ran into a trash can left minor scartches but nothing was wrong internally. September got side swiped on the highway not a reportable accident but I had to change whatever held the wheel literally everything that holds the right wheel had to be changed and after that incident a sensor came off, traction with wheels off but still drivable, about 3 days ago the engine just started making a cracking sound mechanic said it was some sensors he changed both and still making the weird noise, only had the car for a year and my mechanic cannot pinpoint the problem and suspects some type of engine issue which idk if it’s a recall on Kia optima’s or not because I don’t drive crazy!

NHTSA ID
11585700
Incident
Apr 19, 2024
BrakesDriver assistance
Filed Apr 22, 2024

I've been having an issue with my car just out of the blue breaking while I'm going into it seems to be only a left turn I had let Kia know about this when I took it in for the other recalls just recently nobody seemed to have any idea of what was going on or look at me like I was crazy I guess and now I see this recall that explains everything to a tee of what my car is doing I need somebody to contact me please. This has almost gotten me into serious accidents on more than one occasion

NHTSA ID
11584407
Incident
Apr 3, 2024
Driver assistanceElectricalEngine
Filed Apr 3, 2024

I was driving in downtown Gilbert when I pulled up to a red light. My car would not inch forward when taking foot off brake. I then had to put my foot all the way down to get my car to drive. When taking a turn my car would run perfectly until I stopped. Then we pull up to parking garage and the car just stops without while in drive so I put it in park and then turn it off and then back on and it works again. I had the alternator, battery and starter checked and they were all good no issues so why am I having electrical problems with my vehicle Kia needs to fix this.

NHTSA ID
11580918
Incident
Mar 29, 2024
Driver assistanceEngine
Filed Mar 6, 2024

The last recall that was fixed is occuring again . Car loosing power warning signal popping up Sometimes smells like matches after parked.

NHTSA ID
11575868
Incident
Dec 22, 2023
Driver assistanceEngine
Filed Feb 8, 2024

3 months prior to my car going into limp mode I had an incident where I was on the highway and had to come to a stop of major traffic and suddenly my car cut off out of nowhere. I got it to crank after putting it in park, but it was very scary being on the highway thank God it was traffic to where cars wasn't going so fast. Fast-forward to my recent incident to now my car's now in limp mode (MIL) same situation different times was getting on the highway and started to pick up speed to accelerate to 60mph my engine light started to blink Non-Stop and here I am again in a terrifying situation to where I have to get back off of the freeway and I also was on my way to work now having to call in and praying and hoping nothing happens to me while trying to get my car home now I've called I'm certain dealerships decided to go with a dealership to get my recalls done and the dealer basically told me he told his mechanics to hurry up and do my recalls that he could do and get my car out of their shop and also told me to get rid of my car basically refusing to do what he's supposed to do regardless but I truly believe I need a new engine and that's why the dealer rushed me out I just want to know how can I get my vehicle fixed with no problems and also without dealerships denying me. I would love to hear back from you all to know my next step in getting my vehicle recall done please and thank you

NHTSA ID
11570912
Incident
Jan 11, 2024
Mileage
101,650 mi
Driver assistanceEngineFuel system
Filed Oct 8, 2023

1st problem happened when I was at a complete stop, at a traffic light, in rush hour traffic. All the sudden steam started coming out from underneath my hood. I instantly looked at my temperature gauge and it did not show anything however I knew something was wrong when the light turned green I immediately pulled over, out of the street as far as I can get without being hit by other cars. I put on my hazard lights. Pop the hood. I had a gallon jug in my trunk. And I walked to a store to fill it up with water. Came back, poured the entire gallon into the radiator. Waited for at least 30 minutes. Started the car and made it home. After that incident, the problems with this 2015 Kia Optima has snowballed. It just amazes me that it has started happening 2000 miles after my extended warranty expired. I had to purchase and replace spark plugs, the coil packs, two other sensor things, which I do have the receipts for and now the car reeks a gasoline and it automatically kicks into overdrive and I lose my reading on my tachometer, this puts it into a disabled mode, I'm on the freeway in Russia traffic, trying to pull over without getting into an accident. Do I believe this is a safety concern? You're damn right I do am I mad yes. I am taking my k i a into the dealership. After doing my research on this make and model, is the dealership doesn't honor what the claims department and the media response to this problem. Will then I will leave the car with Kia because I cannot afford a new engine. I will have to call to finance company and let them know that I voluntary I'm letting them come repo this car, good luck selling it

NHTSA ID
11548919
Incident
Sep 8, 2023
Driver assistanceEngineFuel system
Filed Sep 20, 2023

Excessive shaking of engine, stalled out while driving on highway, knocking in the engine.

NHTSA ID
11545569
Incident
Sep 10, 2023
Driver assistanceEngine
Filed Mar 30, 2023

The contact owns a 2015 Kia Optima. The contact stated that while driving approximately 70 MPH, the vehicle inadvertently decelerated to 60 MPH. The vehicle began to shudder and failed to accelerate above 20 MPH. The check engine warning light was illuminated and flashing. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The approximate failure mileage was 80,000.

NHTSA ID
11514644
Incident
Mar 28, 2023
Mileage
80,000 mi
Driver assistanceEnginePowertrain (other)
Filed Mar 12, 2023

The engine lost power taking off crossing a major roadway, resulting in a stall, vehicle had to be restarted in a panic. The knocking and loss of power put me and my passenger in danger of a side impact from cross traffic. The issue was reproduced by a dealer upon further inspection. The vehicle will be inspected by a service department at certified dealership. No warnings lights or fault warnings appeared related to this issue.

NHTSA ID
11511467
Incident
Mar 11, 2023
Driver assistanceEnginePowertrain (other)
Filed Mar 10, 2023

On 3/1/23 on my way home from my which the site was in Perth Amboy, NJ. At the North Somerset rest stop, just exited the I-76 westbound. I lost power around 65 mph. I didn't get any response from my brakes at first and nothing from my accelerator. Upon drifting and praying that I'd make it to the lot out of the main exiting lane. Upon pulling into a spot at the very farthest spot from the building, I noticed my check engine light is flashing. Press my brakes were working. Accelerator was hardly responding. I've worked on my car and my families cars, and cars most of my life. I had my code reader with me. Plugged it in and got the code that I've heard and read about. P1326 knock sensor. Knowing about this about Kia and Hyuandi, I knew my engine was dead. Thank God it didn't catch fire like some others have. I had it towed to Smail Kia in Greensburg, PA. That was the closest and NOT the dealer I bought it from. We bought it from Century 3 Kia West Mifflin, PA. After their promises that the engine would get replaced, lack of communication, many of my calls,voicemail, emails and showing up in person,(had to move 2 things that would've been in the way of the swapping of the engine) and a week later Kia denied my replacement due to "power adders". None of which I have, use or cause any issues. NO TESTING WAS DONE ON WHAT THEY THOUGHT WAS POWER ADDERS. HOWEVER, ALL OF THE TESTS THAT SHOW THEIR FAULTY ENGINE COMPONENTS AS PERR THE FEDERAL LAWSUITS AND RECALLS.....ALL FAILED! I can't drive the car. It's dangerous for myself and any other motorist. Could explode, catch fire or completely fail on ANY highway/roadway. I need my car for my career and above all, my life sustaining health and medical appointments Now I'm left with no vehicle. I still owe around a year- year and a half. As well as car insurance. Now what? Kia needs to do the right thing here, for myself and anyon else suffering from this horrific life changing nightmare.

NHTSA ID
11511227
Incident
Mar 1, 2023
Driver assistanceEngine
Filed Nov 15, 2022

The contact owns a 2015 Kia Optima. The contact stated that while driving at an undetermined speed, the vehicle failed to accelerate and stalled. There were no warning lights illuminated. The vehicle was towed to the local dealer where it was diagnosed that an engine replacement was needed. The vehicle was not repaired. The manufacturer was notified and informed him that he had failed to complete the knock sensor detection system (KSDS) repair and provided no additional assistance. The failure mileage was approximately 106,000.

NHTSA ID
11493608
Incident
Nov 8, 2022
Mileage
106,000 mi
Driver assistanceEngine
Filed Jul 19, 2022

My car had started acting weird about 5 months after I got it, I believe Jan 2020. Only had it till Jan 2021 and they said my engine Barrings broke and it was going to cost me 10000. I didn’t have it. I was never informed about the recall. It messed up my whole credit and I still have not been able to get a car since. I moved and I was just now able to get the mail!

NHTSA ID
11474718
Incident
Nov 27, 2020
BrakesDriver assistanceEngine
Filed May 10, 2022

DEAN MCKRARY KIA HAD MY CAR FROM NOVEMBER TO DECEMBER 12, 2021 WITH THE AGREEMENT TO REPAIR ALL EXISTING SERVICE RECALLS. THERE YET REMAIN SERVICE RECALL 21V331. THE AGREEMENT WITH THE SERVICE MANAGER THAT ALL RECALLS ISSUED WOULD BE REPAIRED. THEY DID NOT KEEP THEIR WORD.

NHTSA ID
11464068
Incident
Nov 3, 2021
Driver assistanceElectricalSteering
Filed Mar 7, 2022
Crash reported1 injury reported

Kia said they fixed recall on my car and lights are still on and I hydroplane and totaled my car

NHTSA ID
11455460
Incident
Mar 6, 2022

Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.

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