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
1,008 reports, newest first.
Electrical system, Oct 7, 2024, fire
The contact owned a 2015 Kia Optima. The contact stated while driving 40 MPH, he noticed an abnormal burning odor; however, the temperature gauge did not indicate that the vehicle was overheating. The contact stated that upon noticing that the burning odor was becoming stronger, the contact pulled to the side of the road and turned off the vehicle. The contact stated that while exiting the vehicle, he noticed flames coming out through the upper part of the hood, near the windshield. The contact opened the hood and noticed that there was fire under the hood. The contact stated that the fire expanded, and the vehicle significantly burned from the front end to the rear seats. The fire was extinguished by the fire department. The contact was unsure whether a fire department report was filed. The fire department advised the contact that the fire was caused by an electrical or mechanical failure. There was no injury sustained. A police report was filed. The vehicle was towed and totaled. The dealer and the manufacturer were not notified of the failure. The failure mileage was approximately 101,000.
Service brakes, Engine, Oct 5, 2024, fire
Engine fire
Engine, Sep 27, 2024
The contact owns a 2015 Kia Optima. The contact stated while driving at an undisclosed speed, the check engine warning light illuminated. The contact also heard a loud knocking sound coming from under the hood. The vehicle was taken to an independent mechanic where it was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 102,500.
Steering, Vehicle speed control, 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.
Engine, Sep 18, 2024
The contact owns a 2015 Kia Optima. The contact stated that while driving at an undisclosed speed, there was a loud knocking sound coming from the engine. There was no warning light illuminated. The vehicle was restarted; however, the failure recurred. The vehicle was taken to the dealer where it was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 150,000.
Electrical system, Engine, Lane departure, 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.
Other or unspecified, Engine, Sep 8, 2024
Engine may be blown not sure what all is affected. Engine died while driving. Trying to start makes a loud knocking in engine compartment.
Air bags, Sep 6, 2024
Possible clock spring failure. Symptoms - Air bag light remains on and lost functionality on left side of steering wheel. Not covered under recall, but 2016 year is covered. My vehicle appears to have a mix of 2015 & 2016 parts (specifically front brakes). No aftermarket changes to brakes or steering clock spring.
Vehicle speed control, Engine, 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.
Wheels, Service brakes, Forward collision avoidance, 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
Electrical system, Engine, Fuel/propulsion system, Aug 27, 2024
For the past month or two my vehicle hesitates to start on the first try. I can smell an odor at times when this occurs. Most recently it seems to occur more frequently when the outside temperature is warmer.
Structure, Aug 26, 2024
The paint is coming off in chunks anywhere from an inch to 5 inches at a time. Not from rock chips.
Other or unspecified, Engine, Aug 21, 2024
Hi I have a 2015 Kia optima white(pearl). Like many other white Kia’s on the road, my paint is continuously simply flaking off. This problem is being ignored by Kia which is very frustrating. How is it that Kia is able to avoid this problem when several Kia’s are having the same problem but because our cars are “ out of warranty” for the useless first 3 years paint warranty they claim to have it’s ok. It’s outrageous a 2015 shouldn’t be having paint problems that insane to even think about.
Engine and engine cooling, Electrical system, Aug 20, 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 check engine warning light illuminated, and the vehicle turned off unintendedly. The vehicle was towed to the dealer where it was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure; however, the contact was informed that the repair was not covered under the Technical Service Bulletin NHTSA ID: 10252085 (Electrical System, Engine and Engine Cooling); with a similar failure description. The failure mileage was approximately 92,394.
Fuel system, Gasoline, Engine, Aug 6, 2024
The contact owns a 2015 Kia Optima. The contact stated while driving 65 MPH, the vehicle shut off without warning. Due to the failure, the vehicle was towed to a dealer where a diagnostic test was performed. The vehicle was diagnosed with engine failure and the vehicle was repaired by the dealer under Warranty. The contact stated that several months after the repair was performed, the contact noticed a fuel odor coming from the vehicle after a visit to the gas station. The next day upon inspection of the vehicle, the contact's husband discovered a puddle of fuel underneath the vehicle. The dealer was notified of the failure and requested that the vehicle be towed to the dealer for an inspection. Upon investigation, the contact discovered NHTSA Campaign Number: 18V907000 (Fuel System, Gasoline; Engine) which the contact linked to the failure. The manufacturer was not notified of the failure. The vehicle had yet to be repaired. The failure mileage was approximately 178,000.
Power train, Engine, Aug 5, 2024
The contact owns a 2015 Kia Optima. The contact stated that while driving at various speeds, or while at a complete stop, the vehicle would shut off without warning. The vehicle would resume normal operation upon restart of the engine. The vehicle was taken to a dealer for an inspection; however, the dealer was unable to duplicate the failure. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 88,000.
Engine, Jul 25, 2024
I have a 2015 Kia Optima never had any problems. Last Sunday it starting rattling from the engine, changed the oil the following Saturday and drove it to see if it made it any better. Within 20 mins the noise in the engine from knocking was so bad, my car was trying to die on me at red lights. Luckily, I was able to make it home. Checked the oil that was just changed and drove maybe 25 mins is full of metal shavings. Called Kia and they are trying to say that because a recall wasn't completed before I owned it that I am not eligible for a engine replacement, even though when i bought this used car from a Kia dealer they should have seen and completed this recall. Now I have a car with a bad engine that I still owe 5K that I can't even drive to trade it in.
Electrical system, Service brakes, Engine, Jul 23, 2024
While driving on freeway lights, flicker and car just dies. Steering goes out and lose control of vehicle. Then will randomly start up again
Electrical system, Other or unspecified, Jul 23, 2024
I was driving on the expressway onto the exit ramp going about 75 mph when my car suddenly slowed down even though my foot was on the pedal as i kept trying to drive, it was slowing down. The temp gauge was exactly in the middle and the rpm was at 0. The mph was at 60 mph even though it was slowing down it didnt change on the reader. When i realized the mph on the reader was not changing all the service lights came out on the dash. So I idled to a stop on the side of the road when I got out of the car I realized there was smoke coming from the hood and it had a really awful smell of something burning. I know the engine didnt over heat because the coolant reservoir is full and the upper radiator hose had pressure. Ive been having an issue with burning oil so I topped it off with a qt of oil. I left the car off for about 2 hours and then tried to start it and the engine would not start , the break pedal became hard to push down but the burning smell got worse. So i decided to turn the car off again. Meanwhile im still stuck on the side of the road. I watched a couple of youtube videos and there are many people having the same issue with the radiator fan, or a leak in a pipe or hose, or some sort of sensor.
Power train, Engine, Jul 19, 2024
Engine locked in while driving on road No power an won’t start
Power train, Jul 17, 2024
The contact owns a 2015 Kia Optima. The contact stated while driving at an undisclosed speed, the vehicle lost motive power and stalled. There were no warning lights illuminated. The vehicle was towed to the residence and then to a local dealer where it was diagnosed with a wheel bearing failure. The vehicle was not repaired. The manufacturer was made aware of the failure; however, no assistance was provided. The failure mileage was approximately 120,000.
Service brakes, Engine, Jul 15, 2024
Driving down highway car engine shut off. Brakes are vacuum assist so brake pedal was hard and not very responsive while trying to stop car. Engine would not restart having to be towed. No warning lights, no strange noises. Just shut off. Engine possibly siezed. Looking in a kia forum this seems to be a recurring problem. I know there were Engine recalls in previous model years may need to be included for this year as well. Engine oil good, coolant level good.
Steering, Other or unspecified, Jul 10, 2024
My car was stolen using a usb cord and they tore my steering column, key ignition and brok my driver side passenger window.
Other or unspecified, Jul 10, 2024
Window regular has been replaced 2 times in 2 years.Having problems again with the same drivers side window. Costing over $600.Window keep getting off track want go up and or down. COULDN'T drve rain pouring in .Regulator replaced year 2022, 2023 now awaiting a appointment for another replacement
Service brakes, Hydraulic, Electrical system, Engine, Jul 8, 2024
The contact owns a 2015 Kia Optima. The contact stated while her granddaughter was driving at an undisclosed speed, the vehicle lost motive power and there was smoke coming from the front end of the vehicle. The driver was able to pull to the side of the road and turned off the vehicle. The contact met her granddaughter on the side of the road. Upon inspecting the vehicle, the contact noticed that the smoke was coming from underneath the vehicle, under the engine compartment. The vehicle was towed to an independent mechanic, where the contact was informed that an unknown wiring harness had burned, but the cause of the failure could not be determined. The vehicle was towed to the dealer, where it was diagnosed that the engine had seized and needed to be replaced. The was not repaired. The contact related the failure to NHTSA Campaign Number: 21V331000 (Service Brakes, Hydraulic); however, the dealer informed the contact that the repair could not be covered under the recall. The manufacturer was not notified of the failure. The failure mileage was approximately 107,000.