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.
Steering, Apr 29, 2022
2015 Kia Optima EX Steering column replaced under warranty at approx. 7,000 miles. Now at 99,500 I need a new Steering Column because of the same symptoms; STICKING STEERING. Steering wheel sticks when trying to maneuver towards the right. Then you over steer and need to pull back to the left. This goes on over and over at all speeds. The worst is at high speeds because the slight tug on the wheel makes you drift more because of your speed. Kia needs to recall all Optima's and re-engineer and replace their Steering Columns.
Power train, Electrical system, Engine, Apr 28, 2022
Engine/motor failed which disabled the car on highway. Traveling on 3/4 lane highway with heavy traffic. Safety was risked due to almost being hit from behind and cars swerving out the way. Problem was assessed and thought to be repaired but occurred again causing more possible damage to engine. Warning lamp illuminated seconds before the car shut off which was not enough time to pull over safely. Car had to be towed off highway.
Engine, Apr 19, 2022
The contact owns a 2015 Kia Optima. The contact stated that while driving at an undisclosed speed, the vehicle hesitated to accelerate and then lost motive power. The oil warning light was illuminated. The contact was able to restart the vehicle however, the failure recurred. The vehicle was towed to the dealer and diagnosed with engine failure. The dealer performed a Knock Sensor Detection System (KSDS) software update and informed the contact 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 116,000.
Structure, Other or unspecified, Apr 18, 2022
I have a 2015 Kia Optima and the paint (Pearl White) is starting to peel of. It started on the front left of the windshield last December (2021) There is now the back right of the vehicle, the top of the trunk and the hood. After research on line, it looks like it is common on this paint type on the Kia models. I am seeking out some help to resolve this problem for everyone. I talked to my car dealer about the problem and told me that the warranty for the paint stops at 36000 miles. My car has 96021 and is not covered anymore, even if it is a defect. My car is starting to rust, no recourse from the dealer, need some support from the NHTSA department to resolve this problem that is not isolated to my vehicle only but many more. Sincerely,
Engine, Apr 14, 2022
The motor is locked for a second time. The first time occurred in May of 2018, I had approximately 80,000 miles on the car. I was leaving from the gas station and as soon as I made it into the middle of the street, the car just cut off. I had a mechanic come look at it, and they told me that the motor was locked up. So I had it towed home, bought another motor and got it repaired. Now here it is 04/14/2022, and the motor is locked up again. This is ridiculous!!! I have had to replace multiple parts (the lower control arm for example) several times over 200 hundred dollars each time. I refuse to replace this motor for a second time and have never got reimbursed for nothing!! I used to love KIA but honestly, this is a crappy car and company.
Engine, Apr 7, 2022
I was driving on the highway going about 60 an then all of a sudden the car loss acceleration and stopped. Lucky I was about to pull on the side of the highway.
Engine and engine cooling, Apr 7, 2022, crash
Driving on highway 54 all of a sudden vehicle seized up on me at 75 mph in the dead of night, steering was difficult to control and hit an object while trying to stop off the highway IN A BLIND CURVE! Was stranded for 6 hours until local shop towed vehicle and replaced condenser-radiator-fan ( object was debris on side of highway) could not get car going and a smell of electrical short coming from under hood. Have not been able to fix problem and have spent 11 days in Carrizozo NM trying with bewildered mechanics to get me back on the road. They replaced starter -fan-radiator-condenser-changed fluids (motor & transmission) to find out motor unable to reset. I’ve spent over 6,000.00 dollars in motel-tows-parts -labor -due to this vehicle. I found out of recall when I was told to buy an engine. This car almost took my life due to sudden engine failure on the highway in the AM hours.
Service brakes, Hydraulic, Apr 1, 2022
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 yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.
Engine, Mar 30, 2022
While driving my car felt as though it was running differently and upon looking at my dash board I saw 4 different indicator lights. The charging system warning light, engine oil pressure light, immobilizer indicator light with smart key, and malfunction indicator light. I brought my car to a stop and because I did not know exactly what was wrong I turned my vehicle off. Upon trying to restart my car is when the brake would not press in and the car would not turn over. I had the car towed to my mechanic who contacted me the next day to let me know that the engine was locked up due to the HECU and that I needed to contact a Kia dealer close to my home because there was actually a recall on this from the manufacture. I then had the car towed to a Kia dealer near my home and was then informed that because I did not have the KSDS Product Improvement done back in 2018 this would mean that the HECU recall would not be covered and they directed me to contact Kia Corporate and see if they would give the approval to have this repaired. After numerous emails I was finally contacted by someone at Kia Corporate and they once again informed me that they refused to fix my vehicle. I am reaching out for assistance with this before I move forward with contacting legal council.
Power train, Engine, Fuel/propulsion system, Mar 28, 2022
1. The O2 Sensor malfunctioned causing check engine light to come on. The Catalytic Converter failed or malfunctioned, an it is available for inspection upon request. 1wk after replacement of O2 Sensor installment, check engine light illuminated once again. [Official diagnosis was the catalytic converter was faulty but no mention of replacing 02 once catalytic converter was fixed]. 2. My safety as well as my children's safety was put at risk because there was and still is (even after repairs made from dealership where car was purchased) an issue with broken exhaust system and leak. A broken exhaust system poses extreme danger because it releases carbon monoxide (CO)- an odorless ,tasteless, highly toxic gas, which can travel in passenger area and cause carbon monoxide poisoning. Overexposure to this odorless and colorless gas can cause death. Even in mild cases of exposure to CO can cause headaches, dizziness, nausea and fatigue. I need not mention that the extreme or excessive temperatures caused severe discoloration where the three- way catalyst is located. The pistons could have melted as well could have caught the car on fire .My safety as well as every occupant that ever traveled in the vehicle thus far, was at risk. The exhaust leak was big enough to affect the oxygen levels, to spring that code. Another safety risk was when owner of car was falling asleep at wheel of car while driving, not knowing there's a leak. This put the owner and the vehicles occupants at risk which is the greatest threat by far. 3. The problem has been confirmed by Rivard Buick GMC. 4. The vehicle has NOT been physically inspected by the manufacturer or police but has been insoected by insurance representatives. Yes there warning lampsthat appeared as the check engine light came on each time the exhaust system was malfunctioning. There was/ are other symptoms prior to the failure 1st appeared 11/01/21 o2 Sensor, 11/15/21 catalytic converter, 01/28/21 symptoms wo
Engine, Mar 23, 2022
Engine locked up exactly like it is described in NHTSA ID Number 1147025. The manufacturer refuses to honor the civil suit judgement on this vehicle due to the previous owner and a Kia dealer not performing 1 recall.
Electrical system, Mar 16, 2022
My 2015 Kia was one of many Kias stolen from the Milwaukee, WI area. It was stolen from a secure residential parking garage by thieves who know they simply have to break a window to gain entrance to the car, break open the ignition lock, start the car with a USB port, and drive away. The police helped me recover the car and it is currently sitting idle at the shop for the past month waiting for a new ignition lock which is on backorder nationwide because of the high demand.
Engine, Mar 16, 2022
The contact owns a 2015 Kia Optima. The contact stated that while driving at an undisclosed speed, there was a knocking sound coming from the engine with the check engine warning light illuminated. The vehicle was towed to the dealer where it was diagnosed with engine code P1326 (Knock Sensor Detection System) and failed the bearing test. The dealer informed the contact that the engine needed to be replaced. The vehicle was not repaired and remained at the dealer. The manufacturer was made aware of the failure and advised the contact to file a complaint with the FTC. The failure mileage was 129,272.
Engine, Mar 15, 2022
DEAN MCCRARY OF MOBILE AGREED TO FIX ALL ACTIVE RECALLS ON THIS VEHICLE ON 11/3/2021. THEY KEPT MY CAR UNTIL 12/4/2021 CAUSING HUNDREDS IN RENTAL FEES. MY CAR STILL HAS AN ACTIVE RECALL WHICH WAS ISSUED IN MAY, 2021. THE SERVICE MANAGER ASSURED ME ALL RECALLS WOULD BE REPAIRED.
Other or unspecified, Mar 15, 2022
2015 KIA Optima EX with snow white pearl paint delamination on the trunk and roof similar to several other reports on the KIA forum website.
Steering, Electrical system, Lane departure, Mar 7, 2022, crash
Kia said they fixed recall on my car and lights are still on and I hydroplane and totaled my car
Engine, Mar 6, 2022
The morning of 3-1-2022, after driving for approximately 5 minutes, I noticed a ticking/knocking coming from the engine area. 10 minutes later, I stopped and opened the hood and it was definitely coming from the engine. This continued that evening when I went home. Sometimes it was quiet, but others times loud. I dropped it off at my mechanic the next morning, they later called saying it was an internal engine knock and they couldn't do anything with it. The next day I took it to another auto repair mechanic and was told the same thing, but they also said it needed a new motor, but to contact kia for any recalls. There are none for my 2015, but 2011-2014 DID have recalls and they were for the same problem I was having. I was given an appt for the following Tuesday, but by Friday afternoon the engine completely shut off while I was driving. Luckily, I was able to coast to a safe location. My check engine light NEVER came on for the 4 days I was having problems with it.
Engine, Mar 5, 2022
While driving on the highway, car suddenly lost power which was dangerous because there was no shoulder to pull over out of the way of other vehicles, & another car could have slammed into the back of mine, luckily was able to coast far enough exit highway. Had car towed to shop was told the engine had seized up. With no warning at all. Then I learned about the recall for this car, unfortunately a little too late in my case.
Other or unspecified, Mar 4, 2022
The contact owns a 2015 Kia Optima. The contact stated that while driving approximately 75 MPH the vehicle stalled. The vehicle lost power brake assist and power steering assist however, the vehicle was able to safely pull off the roadway. The contact stated no warning light was illuminated. The vehicle was towed to a non-affiliated dealer. The vehicle was not repaired. The VIN was included in NHTSA Campaign Number: 21V331000 (Service Brakes, Hydraulic). The manufacturer had been informed of the failure. The failure mileage was approximately 97,000.
Engine, Mar 4, 2022
While driving the vehicle the engine shut off with no warning in heavy traffic. 10 seconds before the check engine light came on and then just seized. 3 police officers came to push the vehicle to the roadside out of traffic. I never Knew of a KSDS install on this vehicle and Kia admits that there is a defective engine but will not fix the car since this install was not complete. The police officers told us that we were extremely lucky to have not been injured in an accident as we sat in the middle of the highway. So we now have a vehicle that we are paying for with a seized motor that kia admittedly knows was defective but they refuse to fix. We never got a notice to have this installed. When I look on your site, there is a recall but for something completely different. How are we to know anything needs to be installed if we are not notified and it’s not listed under the VIN? Please help! There are thousands of us with this same issue!
Service brakes, Hydraulic, Electrical system, Mar 3, 2022, crash
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 yet available. The contact stated that while driving at an undisclosed speed, the brakes failed to stop the vehicle immediately, causing the vehicle to crash into a curve that fractured the lower control arm and damaged the tire rims, fender, and bumper. Additionally, the vehicle later failed to start. The dealer was made aware of the failure but confirmed that parts were not yet available. The vehicle was taken to an independent mechanic and diagnosed that either the alternator or battery was faulty. The mechanic replaced the lower control arm. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was 129,403. Parts distribution disconnect.
Electrical system, Mar 2, 2022
I was driving my 2015 Kia Optima hybrid with around 77,000 miles on the interstate at 70 mph when the HCS, battery management system and other hybrid battery warnings flashed on the screen. The display said to pullover over immediately and turn off the engine. The hybrid battery charge display went from mid charge to zero charge. The car went into limp mode with very limited power. Fortunately, I was able to get off the highway as there was an exit ramp close by. After turning off the car, it would not start again. I disconnected the 12V battery hoping it would clear it out but that didn't work. Had to get car towed to the Kia dealership. They replaced the hybrid battery's high voltage 125 Amp fuse with a 150 Amp fuse and the problem was fixed (cost of $370). A search on the internet revealed that this is a common occurrence on 2011 to 2016 Kia hybrids and Kia knows about this faulty/inadequate fuse problem but refuses to issue a recall. Kia issued a TSB #PS-515 DTC P1B25/P1B77 – 125 AMP HV FUSE INSPECTION that states to inspect the resistance on the factory 125 A fuse and replace if less than 1 Ohm resistance with new 150 A fuse. This is a relatively simple fix for Kia that could prevent a dangerous situation if the car were to lose power on a crowded interstate.
Electrical system, Exterior lighting, Service brakes, Mar 1, 2022
I have my driver side tail light out, when I bought the car in 2019, they said I have 30 days to bring in my car so they can replace what needs fixing, well I hit day 32 and I’ve had to replace my tires, brakes, headlights and tail lights because they all went out on my own dime, now my brakes are making me nervous because sometimes it feels like my car isn’t slowing down to a stop and I have to slam them to stop sometimes.
Engine, Feb 28, 2022
Every morning when I start the car and try to accelerate the car has no power, I have to stop turn the car off and restart the car again for their to be power. This simple restart works for a couple months before the check engine light comes on. When I take the car to Kia they tell me that because the diagnostics machine isn’t giving them a code they don’t know what to fix, however the diagnostics machine resets the check engine light and the process starts all over. This all started right before Kia replaced the motor on a recall. The car is doing the same thing as it was when I had it towed to them and they said the motor was seized up.
Electrical system, Service brakes, Engine, Feb 19, 2022, fire
Vehicle lots brakes while driving, smell of gas and caught fire under hood. Engine had been completely replaced due to recall in January 2022 Vehicle was a complete loss, luckily son was able to get out.