2015 Kia Optima
Problems, recalls and owner-reported issues
Engine is the leading concern among 1,008 owner complaints filed for this model year. This is the 2nd highest complaint count among 20 Optima model years with reports.
Of the 2015 reports, 31 involved a crash and 74 involved a fire. 23 people were injured and 1 person died.
What owners report most often
Recalls and investigations
Service brakes, hydraulic, antilock/traction control/electronic limited slip, control unit/modulePark outsideSep 25, 2023
Kia America, Inc. (Kia) is recalling certain 2010-2019 Borrego, 2014-2016 Cadenza, 2010-2013 Forte, Forte Koup, Sportage, 2015-2018 K900, 2011-2015 Optima, 2011-2013 Optima Hybrid, Soul, 2012-2017 Rio, 2011-2014 Sorento, and 2010-2011 Rondo vehicles. The Hydraulic Electronic Control Unit (HECU) may experience an electrical short, which can result in an engine compartment fire while parked or driving.
An engine compartment fire while parked or driving can increase the risk of injury.
Owners are advised to park outside and away from structures until the recall repair is complete. Dealers will replace the HECU fuse, free of charge. Interim notification letters, notifying owners of the safety risk, were mailed November 14, 2023. Owner notification letters were mailed March 29, 2024 through June 18, 2024. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC284.
Campaign 23V652000 on NHTSA.gov
Service brakes, hydraulic, antilock/traction control/electronic limited slip, control unit/modulePark outsideMay 10, 2021
Kia Motors America (Kia) is recalling certain 2013-2015 Optima and 2014-2015 Sorento vehicles previously recalled under recall 20V-519. Brake fluid may leak inside the Hydraulic Electronic Control Unit (HECU), possibly resulting in an electrical short.
An electrical short in the HECU increases the risk of a fire while parked or driving.
Owners are advised to park outside and away from other vehicles and structures until the recall repair is completed. Dealers will install a new multi-fuse, and inspect the HECU for leaks, replacing the HECU if necessary, free of charge. Owner notification letters were mailed on July 2, 2021. This recall supersedes previous NHTSA recall number 20V-519. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC212.
Campaign 21V331000 on NHTSA.gov
Service brakes, hydraulic, antilock/traction control/electronic limited slip, control unit/modulePark outsideAug 27, 2020
Kia Motors America (Kia) is recalling certain 2013-2015 Optima and 2014-2015 Sorento vehicles. Brake fluid may leak inside the Hydraulic Electronic Control Unit (HECU), possibly resulting in an electrical short.
If the HECU short circuits, there is an increased risk of an engine compartment fire.
Kia will notify owners, and dealers will inspect the HECU for leaking brake fluid and replace the HECU if necessary, free of charge. Owners are advised to park outside and away from other vehicles and structures until the recall repair is completed. The recall began October 20, 2020. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC197.
Campaign 20V519000 on NHTSA.gov
Fuel system, gasoline, delivery, hoses, lines/piping, and fittingsDec 19, 2018
Kia Motors America (Kia) is recalling certain 2011-2017 Optima, 2012-2017 Sorento and 2011-2018 Sportage vehicles that previously received an engine replacement under recall number 17V-224, warranty, or the Knock Sensor Detection System (KSDS) Product Improvement Campaign. The high pressure fuel pipe that connects to the fuel pump outlet may have been damaged, misaligned or improperly torqued during the engine replacement procedure, possibly causing a fuel leak.
A fuel leak in the presence of an ignition source can increase the risk of a fire.
Kia has notified owners, and dealers will inspect and replace the fuel pipe, as necessary, free of charge. The recall began January 17, 2019. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC172.
Campaign 18V907000 on NHTSA.gov
Representative owner complaints: engine
647 reports, newest first. Show all
Engine, Dec 14, 2023
Engine is using excessive amount of oil. It has been changed on a regular basis have documentation bought the car new. I have noted that there are several complaints of the rings going bad in this model engine of the rings letting oil blow by. When is the NHTSA going to demand a recall as this can cause the motor to blow up and causes much more carbon emissions. Please make this a priority recall before more people get hurt and the emissions put out more pollutants/carbon in the air..
Engine, Fuel/propulsion system, Dec 11, 2023
My car has been consuming lots of oil. I took it in for an oil change and while test driving two of the mechanics stated the oil light came on and it ran out of oil on the test drive. Instead of saying anything about a possible issue with the engine, they went ahead and put oil in it and sent me on my way. Since, my car is still consuming loads of oil. I've taken it into the dealership several times for the same issue and each time they told me they can't do anything about it until it runs out of oil. One person advised to not put oil in it. Now the engine light came on, so I took it in again and this time I was told the cylinders have gone bad and one person that worked there said to let it run out of oil, but you didn't hear that from me, and they will replace the engine for free. I said, so I'm supposed to let the car die while I'm driving it, what happens if the car quits running in the middle of a turn and I get hit, the guy looked at me and said nothing. In addition, he asked if I had an extended warranty as its covered under an extended warranty. I'm pretty sure I did buy one, but I couldn't remember, so I called up the dealership I purchased it from and they said they couldn't tell me either since, they don't keep any paperwork after 7 years, and its been 8 years.They also said it wouldn't matter as it wouldn't be covered because of mileage. I have been complaining about the oil way before my mileage was over and I'm pretty sure I read something about mileage ext on Kia for this same issue.The last time I drove it, I was sitting idle in my car and the oil light came on, so I called the dealership, they asked if it started back up and I wasn't sure, so I tried and it started back up and the oil light went back off again, so I didn't have it towed down there. Now my understanding there is a new recall on the car with the fuel and it could catch fire and was stated to park it, so its been sitting for three months with nothing fixed.The car needs a new engine.
Power train, Service brakes, Engine, Dec 8, 2023
1. While stepping on the brakes my car has revved up as if I was pressing the gas. So I let my foot off the pedal and pressed the brakes again. This happened 2 times that week. And another time while I was coming to a stop light as I pressed the brakes, my car revved up but didn’t actually make my car speed up. I had to press the brakes again for it to stop. 2. My battery was smoking and I replaced it. 3. My car is consuming oil. The dealership did a series of oil consumption testing due to the exhaust leaving extra carbon residue on my car. They said it was fine but I don’t think they solved the issue.
Engine and engine cooling, Engine, Dec 6, 2023
The contact owns a 2015 Kia Optima. The contact stated that while driving at approximately 40 MPH, the engine seized. After restarting the vehicle, the vehicle shut off. The vehicle was towed to the local dealer, where it was diagnosed that the engine had seized and needed to be replaced. The contact was informed that there was metal in the intake and exhaust cam shaft. There were metal shavings in the oil. The contact was also informed that the pistons were off by twenty-four degrees. There was an indication that cylinders #1, #2, and #4 had misfired. The vehicle was not repaired. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 102,589.
Engine, Dec 4, 2023
I have a 2015 Kia optima GDI, I never had any issues with this vehicle and I kept with my oil changes, but one day in November I was driving on the highway doing about 65 my car shut off in the middle of the highway, I only had the car for 2.5 years. I took it to advance auto got the battery and alternator checked which said that I had a bad alternator, and a code of p1326. The alternator was changed but I am still not able to drive my car, I took it to my local Kia dealership and hopefully they’ll be able to replace the engine. I never had any issues with this car but paying on a car that I can’t drive is very stressful. I will never buy a Kia vehicle again
Other or unspecified, Engine, Nov 29, 2023
engine died while driving 45 on highway, tow to garage and was told to take to dealership because of a recall for my engine. towed the car to the dealership and they check and are telling me that my car engine wasn't covered and I would have to paid for the repair. I was told the problem was the engine manufactured with the rod bearing issue. My safety was at risk because car died on a state highway.
Engine, Nov 29, 2023
The engine is being to make a sound. When I checked it’s the rod knock. In the end of September my wife drove the car to work where it stopped working. That’s when I heard and seen what it was. It’s my understanding that many optimas have been having engine problems. I was told to take it to a dealership and Kia would fix it that there was a recall. Please let me know if this is true or any help you can provide.
Engine, Nov 25, 2023
Car was stolen due to Kia’s faulty ignition start my steering system was broken into and my car was stolen.
Engine, Nov 16, 2023, crash
While driving on Hwy 19 the vehicle shut down. The motor turned off and I was able to slowly roll to the side of the road. The car did not start again.
Electrical system, Engine, Nov 14, 2023
When driving down the highway car will beep a message on dashboad to pull the car over and turn engine off. the HEV light will be flashing. you can turn engine off and re start in a minute or so. the check engine light stays on and tells me to check hybrid system this willl ocur at random once a week or two times in a month. Kia dealership has not fixed the issue. I dont trust driving the car or safe when pulling off a busy highway. ON hand held obd did get a trouble code P0A37 Generator Temperature Sensor Hi Range .
Steering, Electrical system, Engine, Nov 9, 2023
The contact leased a 2015 Kia Optima. The contact stated that the front passenger's side window, the rearview camera, and the brake lights were intermittently inoperable. Additionally, the contact stated while driving at approximately 10 MPH, the check engine warning light and several unknown warning lights illuminated, and the vehicle shut off. The contact shifted into neutral(N) and was able to push the vehicle to the side of the road with the assistance of several bystanders. The vehicle was towed to the residence. The vehicle was then towed to the dealer where it was leased, and it was diagnosed that the engine had seized and needed to be replaced. The engine was replaced; however, the failure persisted. The contact stated while driving at an undisclosed speed, the battery warning light and the steering warning light illuminated, and the vehicle shut off. The contact was able to jumpstart the vehicle and drove to the residence, where the vehicle remained parked. The vehicle was not repaired. The Kia dealer and manufacturer were not notified of the failure. The failure mileage was unknown.
Engine, Fuel/propulsion system, Nov 7, 2023
Engine failure & fuel leak. Also oil was burning extremely fast . I had taking it to the dealership while back ago for a recall and said it was fixed. Few months later gas started running out fast. A check light engine came on saying there was an evaporation leak. I did call the dealership to see what exactly they fixed, emailed them. They kept telling me they would call me back and never did. Wouldn’t get any emails back. I took it upon headquarters to let them know about the oil burning fast and emailed. And called them. Apparently there was nothing they can do and told me I have to call the dealership. I took the car to my mechanic because I trust him more than the actual dealership at this point. And I brought up concerns about my safety being in that car. No one heard me out or seemed to care. And now forward months later after check light engines on and the pcv valve getting changed, purge valve. The light stopped coming on after changing the purge valve got change which linked to the code that showed up. I started seeing online that Kia optima’s have so many engine problems , misfires etc. and now my Kia has an engine failure. I tried to contact Kia again by entering the info for a settlement and I was told there is nothing they can do about it. So now I’m left with $5,500 to finish paying off my loan for the car and can’t even drive the car anymore. I havnt felt safe In my car for months and no one would hear me out.
Engine, Nov 5, 2023
I was driving when the vehicle began to shake and then the check engine light came on. I stopped at a red light and when the light turned green and I processed to go the car shut off while in traffic. I then waited to see if the car would turn back on and it did just long enough for me to get out of the roadway. I had the car towed back to the dealer from whom I purchased the car from. He had his mechanic check the vehicle out and informed me that the engine seized. He then had it towed to a repair shop and they also confirmed the engine seized. When I purchased the vehicle 9 months ago it came with a warranty. The warranty company is now saying that I am responsible for the cost of the diagnostic testing which is $2,500.00 before they will replace the engine. I reached out to Kia and they are also saying that I am responsible for the diagnostic testing and that the warranty company can choose a new or used engine replacement. I asked Kia if the engine was ever replaced during the first engine recall but representative refused to say if it was or wasn't. My car is still at the repair shop. These matter needs to be addressed as there may be others going through the same issue. This is the second time this has happened to me. I previously had a 2011 Kia Sportage that did the same exact thing. I returned it to the dealer whom I purchased it from and that vehicle was added to my credit report as a repo and resold at an auction. I hope and pray the issue was repaired before it was sold.
Electrical system, Engine, Nov 4, 2023
Unknown
Engine, Oct 31, 2023
The contact owns a 2015 Kia Optima. The contact stated while driving 70 MPH, the vehicle lost motive power. The contact pulled over to the side of the road however, the vehicle was not able to restart. There was no warning light illuminated. The vehicle was towed to the contacts home. The vehicle had been diagnosed by an independent mechanic. The contact was informed that the failure was caused by the engine seizing. The manufacturer was not made aware of the failure. The failure mileage was approximately 93,000.
Electrical system, Engine, Fuel/propulsion system, Oct 28, 2023, fire
Engine lost power and when restart was attempted, it could torn turn over. Tried restarting 3 times with no success. After this, smoke started coming from the hood. I opened the hood and noticed a small flame at the driver side bottom of the engine compartment. Flame intensified and grew and eventually I extinguished with a fire extinguisher. I had just replaced the starter that same week and replaced some wiring at a local car repair facility.
Engine, Oct 27, 2023
Bought car February 22 less than 5200 miles. Died on hwy October 6. Kia denied claim. Had no ideal of a software update. Never heard of that in my life. Almost lost my life with this car
Engine, Oct 26, 2023
Kia has a Nation Wide Campaign for faulty engines, that will display a code (consistent in the campaign), my daughter purchased a 2015 Kia Optima, 76,000 miles, that was a rebuilt title, however the damage was on the back passenger door, body damage only. Was surprised it was even totaled out from the insurance, however due to the high theft issues with Kia's insurance companies are paying them out to avoid the theft as well as the engine issues. Currently, Kia is telling us that they will not replace the engine (even though this is the campaign they are advertising) due to the rebuilt title, even though the defective engine is from the manufacture and nothing to do with the body damage to the back passenger door. This car was repaired in full and cleared to be re-titled as a rebuilt title. These engine issues can cause the vehicle to seize while driving, it goes into Limp mode (safety mode) which reduces the speed and power to the engine and there are reports that the engine can catch fire. Kia is doing these engine replacements under the MFG warranty and have stated they are lifetime replacements, due to the continued problems and yet they want to not replace hers when a insurance company decided to total the car our for damage that could have been repaired.
Engine, Oct 19, 2023
The contact owns a 2015 Kia Optima. The contact stated while driving 60 MPH, the vehicle slowed down and then became inoperable. The battery and check engine warning light were illuminated. The vehicle was towed to a dealer. The vehicle had been diagnosed. The contact was informed that the failure was due to a faulty engine block. The manufacturer was not made aware of the failure. The failure mileage was approximately 96,000.
Engine, Oct 18, 2023
My engine locked while driving on the highway, I have got the car inspected twice since I purchased it and only had it for a year and it passed, everything worked fine and no hazard lights were on dashboard until it stopped then the battery and engine light showed when stopping! I had no problems with the car prior to it, just stopping on me I had my kids with me and we were going to another state so that’s dangerous! I had to get it towed to a Kia dealership and was told they had 4 recalls on my car and the problem was the engine locked but I was told they would not do it free of charge or under warranty because the car has a salvage title overall the car was still drive able and in good condition up until that point.
Service brakes, Engine, Oct 17, 2023, fire
My car started smoking while parked at work for no reason and I had to call the fire department. It stop smoking by the time the fire department came. I had it towed to the Dealer. My brakes are a mess but especially on a wet road you have to pump them to try to stop. I have taken it to the Dealer and of course they find nothing wrong. I told them to test drive it on a wet raining day and try to stop hard. Supposedly they could not but I have almost been it several accidents and had to run through a red light because I could not stop. So, I try to drive this car on a rainy day or drive slowly. This car has been trouble since I got it and the dealer will not listen.
Exterior lighting, Engine, Oct 14, 2023
Motor failed and Kia replaced the motor. Now my dim lights and fog lights will not work. All fuse, relay, etc.. has been tested along with bulb replacement…
Engine, Oct 12, 2023
My Kia optima has been having engine issues regarding fluid spilling in different components of the vehicle, first started within spark plugs, then in the exhaust camshaft, once I fixed those two issues it's now spilling within my wiring hardness. I was told to fix my valve cover which I did but oil is still spilling out from the engine and into other components. The vehicle stalls while driving on the highway which is unsafe for myself and other drivers due to the speed slowing down without warning until after the decline in speed. I've went to an independent service center, but once new issues arouse I assumed he was just trying to get more money out of me but I even brought it to Kia and still seems to have issues occur. I received an engine light warning when the vehicle stalls, there is times where the car actually turns off but not completely ( I guess due to the car being in drive mode) and I have to actually push my engine start/stop button for the engine to start again.
Engine, Oct 10, 2023
Engine Rebuild/Replace: #4 CYLINDER WALL DAMAGE ALLOWING OIL INTO COMBUSTION CHAMBER I have kept very good care of my car and have provided appropriate maintenance including oil changes 3k-5k with synthetic oil and also recently had full tube up April 2023.
Vehicle speed control, Engine, Fuel/propulsion system, 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