The 2015 Kia Optima has 4 NHTSA recall campaigns affecting an estimated 2,682,585 vehicles. Recall repairs are always free at any authorized dealer. Owners have filed 1,388 complaints with NHTSA, most often about the engine. Last updated July 5, 2026.
Recall campaigns
SERVICE BRAKES, HYDRAULIC23V6520002023-09-251,730,192 affected
Defect
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…
Consequence
An engine compartment fire while parked or driving can increase the risk of injury.
Remedy
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…
SERVICE BRAKES, HYDRAULIC21V3310002021-05-10440,370 affected
Defect
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.
Consequence
An electrical short in the HECU increases the risk of a fire while parked or driving.
Remedy
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…
SERVICE BRAKES, HYDRAULIC20V5190002020-08-27440,370 affected
Defect
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.
Consequence
If the HECU short circuits, there is an increased risk of an engine compartment fire.
Remedy
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…
ENGINE18V9070002018-12-1971,653 affected
Defect
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…
Consequence
A fuel leak in the presence of an ignition source can increase the risk of a fire.
Remedy
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.
Complaints by component
ENGINE
617
9crashes47fires9injuries
UNKNOWN OR OTHER
138
2crashes6fires
ELECTRICAL SYSTEM
126
3crashes23fires5injuries
STRUCTURE:BODY
74
4crashes7fires2injuries
STEERING
68
4crashes2fires1injuries
POWER TRAIN
48
1crashes1fires
SERVICE BRAKES
48
4crashes5fires2injuries
FUEL/PROPULSION SYSTEM
44
4crashes7fires5injuries
SERVICE BRAKES, HYDRAULIC
40
1crashes7fires2injuries
VEHICLE SPEED CONTROL
33
3crashes2injuries
Total complaints1,388
What owners report
Verbatim reports filed with NHTSA, lightly edited for readability and with personal
information removed.
“While driving my 2015 kia optima, the engine failed completely without warning. The vehicle lost power while in motion approximately 300 miles away from my home. All warning lights illuminated and the car shut down during driving conditions, creating a serious safety hazard. The vehicle was towed…”
“The contact owns a 2015 kia optima. The contact stated that while accelerating at 55 mph, there was an abnormal burning smell detected. While driving, she was alerted by another driver who informed her that the vehicle was on fire. The passengers were able to exit the vehicle safely. The vehicle…”
“The contact owns a 2015 kia optima. The contact stated that while accelerating at 55 mph, there was an abnormal burning smell detected. While driving, she was alerted by another driver who informed her that the vehicle was on fire. The passengers were able to exit the vehicle safely. The vehicle…”
“They were speeding with their phone in a phone stand watching a show while on the freeway”
“Was driving down the interstate and the engine lost some power and the engine blew and parts of the connecting rod was on the outside of motor which blew a hole in the block and oil went into the intake manifold and pieces of the piston ring was in there and engine shut off, and seen that this has…”
“I was driving on the freeway and a system warning came up “check hybrid systemâ€� and the car went limp. Thankfully I was able to get off safely from the momentum this time, but it has stopped in the middle of the street before. This is the second time it’s shut down this year. I took it in…”
“The contact owned a 2015 kia optima. The contact stated that while driving at 65 mph and slowing down to enter a parking garage, she observed black smoke emanating from under the hood, and the vehicle stalled. The contact then observed flames near the windshield wipers coming from under the hood…”
“Driving down the road and my steering wheel light comes on sporadically and then I lose control of the steering wheel like it locks up and is almost impossible to turn or rotate and then other dashboard lights come on and I lose headlights. When that happens traction control light on dashboard,…”
Defect investigations
InvestigationAQ23002 Opened 2023-11-17 · open
Hyundai and Kia ABS Module Fires
The Office of Defects Investigation (ODI) has received eight Hyundai Motor America (Hyundai) and eight Kia America, Inc. (Kia) Part 573 Recall Reports between 2016 and 2023. The combined 16 safety recalls all involve the antilock braking system (ABS) modules or Hydraulic Electronic Control Units (HECU) manufactured…
InvestigationDP21003 Opened 2021-11-12 · closed 2023-06-20
Throttle control system vulnerabilities
The Office of Defects Investigation (ODI) of the National Highway Traffic Safety Administration (NHTSA) received a petition letter dated October 10, 2021, requesting an investigation of possible defects in the electronic throttle control (ETC) system on certain Kia vehicles resulting in the opening of DP21-003.…
InvestigationDP22003 Opened 2022-09-12 · closed 2023-12-12
Loss of Motive Power
The National Highway Traffic Safety Administration (NHTSA) received a letter dated July 13, 2022, petitioning the Agency to initiate a safety defect investigation into loss of motive power allegations attributed to oil drain pan assembly failures on certain Hyundai Motor America, Inc. and Kia America, Inc. vehicles…
InvestigationEA19001 Opened 2019-04-19 · closed 2024-09-19
Electrical overstress
The Office of Defects Investigation (ODI) opened this investigation to determine if the failure of airbags to deploy during severe crashes, in certain vehicles, was the result of a safety related defect. During the investigation a complex failure was studied that can result in non-deployment of subject vehicle air…
Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL,
FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 2015 Kia Optima as of
July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page
contains ads and affiliate links. Full methodology.