Owners have filed 1,885 complaints
about the 2013 KIA Optima with NHTSA between 2012 and 2026.
The largest single group is the engine & cooling.
Across this model's run it ranks 1 of 20 worst.
The letter says how bad. This says what kind — whether this year drew
an unusual number of complaints, unusually dangerous
ones, or failures that arrived unusually early.
The dashed ring is 50 — the national norm. Further out is worse.
Complaint volume — 100
Against the median year of the KIA Optima. 50 means typical for this
model; 100 means roughly double.
Severity — 81
15.6% of these complaints
involved a crash, fire, injury or death, against a national rate of
9.7%.
Early failure — 38
22% of failures with a mileage on record happened under
36,000 miles, against a national rate of
29%.
NHTSA files every complaint against a named sub-assembly, not just a
system. This is the difference between knowing it was "the engine" and
knowing which part of it — the list to hand a mechanic.
Body
11981.5%
Sun/Moon Roof Assembly
128.2%
Automatic Emergency Braking
42.7%
Brake Lights
32.1%
Headlights
32.1%
Control Unit/Module
21.4%
Hoses, Lines/Piping, AND Fittings
21.4%
Coil
10.7%
When it fails
Odometer readings owners gave when they filed. About half of all
complaints include one.
Under 1,000 miles
615.8%
1,000 – 9,999 miles
424.0%
10,000 – 24,999 miles
787.4%
25,000 – 49,999 miles
11811.2%
50,000 – 74,999 miles
14914.1%
75,000 – 99,999 miles
20319.2%
100,000 – 149,999 miles
28026.5%
150,000+ miles
12611.9%
When owners complained
A spike years after the car went on sale usually means a part wearing
out on schedule across the whole fleet — the kind of pattern no single
owner can see from inside their own car.
Sep 2012peak 39Aug 2026
NHTSA investigations into the 2013 KIA Optima
An investigation is the step before a recall: the agency has seen enough
complaints to look into a pattern itself. An open one means it thinks
something may be wrong and nothing has been fixed yet.
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 by the equipment supplier Mando. The Part 573 Recall Reports contain varying defect descriptions and differing remedy descriptions for the same or similar equipment supplied by Mando. Safety recalls included in this Audit Query (AQ) review include: Hyundai recalls 20V-520, 20V-543,...
DP22003Opened 12 Sep 2022Closed 12 Dec 2023ENGINE
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 spanning Model Years (MY) 2005-2021. The Petitioners cited examples of complaints indicating that the subject vehicles were experiencing rapid loss of engine oil due to oil drain plug back outs, resulting in loss of motive power and/or catastrophic engine damage. Additional complain...
EA21003Opened 22 Dec 2021Closed 5 Feb 2024ENGINE
Engine Fires
On March 29, 2019, the Office of Defects Investigation (ODI) opened two Preliminary Evaluations (PE19-003 on Hyundai and PE19-004 on Kia) to broadly investigate incidents of non-crash fires (regardless of origin or operational status of the vehicle) on various model year Hyundai and Kia vehicles. During the PE investigations, Hyundai and Kia issued several recalls to address vehicle fires, including those due to engine failures involving various engine types. The remedies for the engine failure recalls typically involve engine inspection (to detect existing damage), and if necessary, engine...
DP21003Opened 12 Nov 2021Closed 20 Jun 2023VEHICLE SPEED CONTROL:THROTTLE
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. Accordingly, Model Year (MY) 2005-2016 Kia Optima/K5, MY 2006-2015 Kia Sorento, MY 2007-2016 Hyundai Elantra, MY 2007-2016 Hyundai Santa Fe, MY 2006-2015 Hyundai Sonatas are all part of the subject population. The petition was originally filed as a Vehicle Owner Questionnaire that can b...
EA19001Opened 19 Apr 2019Closed 19 Sep 2024AIR BAGS: AIR BAG/RESTRAINT CONTROL MODULE
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 bags and other restraint system devices in severe crash events. The subject vehicles may be equipped with an airbag control unit (ACU) for the supplemental restraint system (SRS) Electronic Control Unit (ECU) manufactured by ZF-TRW. The ECU receives signals from crash sensors mount...
PE19004Opened 29 Mar 2019Closed 22 Dec 2021ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES
Non-crash Vehicle Fires
During this Preliminary Evaluation (PE), the Office of Defects Investigation (ODI) assessed the scope, frequency and potential safety-related consequences of non-crash vehicle fires caused by both engine failures and failures of other vehicle systems/components in model year (MY) 2011-2014 Kia Optima, MY 2011-2014 Kia Sorento and MY 2010-2015 Kia Soul vehicles equipped with Theta II, Gamma, Nu and Lambda II engines (approximately 1.7 million vehicles). ODI also reviewed field and other data on other Kia vehicles (approximately 3.6 million additional vehicles) equipped with the same engines use...
DP18003Opened 21 Aug 2018Closed 10 May 2019ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES
Non-crash Vehicle Fires
In a letter dated June 11, 2018, the Center for Auto Safety (CAS) petitioned the National Highway Traffic Safety Administration (NHTSA) to initiate a safety defect investigation into non-collision related fires on model year (MY) 2011-2014 Kia Optima and Sorento, and Hyundai Sonata and Santa Fe vehicles. In a letter dated July 24, 2018, CAS requested that MY 2010-2015 Kia Soul vehicles be added to the petition. CAS stated that there is a higher number of complaints to NHTSA regarding non-crash fires on these vehicles compared to other similar vehicles. The Office of Defects Investigation (ODI)...
RQ17003Opened 18 May 2017Closed 22 Dec 2021ENGINE
Scope and Timeliness
NHTSA opened Recall Query (RQ) 17-003 to investigate the timeliness and scope of Kia?s Theta II GDI engine recall (Recall No. 17V-224), and Kia?s compliance with reporting requirements. On November 23, 2020, the Agency entered into a Consent Order with Kia to administratively resolve NHTSA?s assertions of violations of law in connection with RQ17-003. NHTSA?s assertions included that Kia may be liable for civil penalties on multiple grounds, including that Recall No. 17V-224 was untimely and Kia?s recall report contained certain inaccuracies.Under the Consent Order, Kia agreed to a total civil...
Recalls on the 2013 KIA Optima
A complaint is one owner's allegation. A recall is the point at which
the manufacturer or a regulator agreed the defect is real and dangerous
enough to fix for free — however old the car is.
United States — NHTSA
23V652000
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
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.
Risk: An engine compartment fire while parked or driving can increase the risk of injury.
22V560000
STRUCTURE:BODY:ROOF AND PILLARS
Kia America, Inc. (Kia) is recalling certain 2012-2013 Optima vehicles. The right and left headliner plates may not be secured properly, which can result in the plates detaching in the event of a side curtain air bag deployment.
Risk: A plate that detaches during a crash may strike an occupant, increasing their risk of injury.
22V093000
FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS
Kia Motors America (Kia) is recalling certain 2013-2014 Optima vehicles that were previously repaired under NHTSA recall number 20V-100. The low pressure fuel hose may be damaged, or missing heat-protective tape, which can result in a fuel leak.
Risk: A fuel leak can increase the risk of a fire.
21V331000
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
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.
Risk: An electrical short in the HECU increases the risk of a fire while parked or driving.
20V519000
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
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.
Risk: If the HECU short circuits, there is an increased risk of an engine compartment fire.
20V100000
FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS
Kia Motors America (Kia) is recalling certain 2013-2014 Optima vehicles equipped with 2.4L Gasoline Direct Injection (GDI) or 2.0L GDI Turbo engines. The low pressure fuel hose may deteriorate and crack over time due to heat generated within the engine compartment.
Risk: If the fuel hose cracks, a fuel leak can occur, increasing the risk of a fire.
18V907000
FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS
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.
Risk: A fuel leak in the presence of an ignition source can increase the risk of a fire.
18V363000
AIR BAGS: AIR BAG/RESTRAINT CONTROL MODULE
Kia Motors America (Kia) is recalling certain 2010-2013 Kia Forte, Forte Koup, 2011-2013 Kia Optima and 2011-2012 Kia Optima Hybrid and Sedona vehicles. In the event of a crash, the air bag control unit (ACU) may short circuit, preventing the frontal air bags and seat belt pretensioners from deploying.
Risk: If the frontal air bags and seat belt pretensioners are disabled, there is an increased risk of injury to the vehicle occupants in the event of a vehicle crash that necessitates deployment of these safety systems.
Canada — Transport Canada
Canada runs its own recall programme, and its campaigns do not
always mirror the American ones.
Recall 2023529276,225 units in Canada
Brakes
Issue: On certain vehicles, the brake hydraulic electronic control unit (HECU) could short circuit. Safety Risk: A short circuit could create a fire risk, even while the vehicle is parked and turned off. Corrective Actions: Kia will notify owners by mail and advise you to take your vehicle to a dealership to replace the fuse(s) for the HECU. Kia recommends that you should park your vehicle outdoors and away from other vehicles or structures until the recall repairs have been completed.
Recall 20232752,635 units in Canada
Electrical
Issue: Kia is conducting a service campaign to inspect and upgrade the safety plug fuse. On certain Optima Hybrid (HEV) models, the safety plug fuse could blow and cause a loss of hybrid system power while driving at low speeds. Additionally, installing an incorrect aftermarket fuse could cause overheating. Safety Risk: A loss of power to the wheels could increase the risk of a crash. Using an incorrect aftermarket fuse could create the risk of a fire. Corrective Actions: Kia will notify owners by mail and instruct you to take your vehicle to a dealership to inspect the vehicle for an aftermarket fuse and replace the 125-A safety plug with one that has a 150-A rating.
Recall 202059739,658 units in Canada
Engine
Issue: On certain vehicles equipped with a 2.0 L NU GDI or 2.4 L Theta II MPI engine, an engine compartment fire could occur while driving. Kia is conducting this recall as a preventative measure to prevent fire risk due to potential fuel leaks, oil leaks and/or engine damage. In some situations, you may notice any of the following symptoms: there could be an abnormal knocking noise from the engine; the check engine light and/or the oil pressure warning light could turn on; you may smell fuel, burning or smoke; or you may notice oil leaks. If you continue to drive the vehicle with these symptoms, the engine could fail and/or a fire could occur. An engine failure can cause a sudden loss of power with an inability to restart. Note: For the Optima model, only the Optima Hybrid is affected by this recall. Safety Risk: An engine compartment fire can create a risk of injury. A sudden loss of engine power could increase the risk of a crash. Corrective Action: Kia will notify owners by mail and instruct you to take your vehicle to a dealer for an inspection of the engine and engine compartment. The dealer will inspect for fuel and/or engine oil leaks, perform an engine test and make any repairs, including engine replacement, if necessary. Kia will also perform a Knock Sensor Detection System (KSDS) software update free of charge, once it is available for your vehicle. This update will detect and prevent engine damage from worn connecting rod bearings.
Recall 201915329,501 units in Canada
Engine
Issue: Kia Canada is conducting a Product Improvement Campaign that provides an update to the engine control module to detect potential problems before an engine fails. An engine failure may cause a sudden loss of power with an inability to restart. Safety Risk: A sudden loss of engine power could increase the risk of a crash. Corrective Actions: The company will notify owners by mail. Owners will be instructed to take their vehicle to a dealer to update the software for the engine control module. Note: Vehicles repaired under Service Campaign SC025 already have this software update.
Recall 20187422,878 units in Canada
Fuel System
On certain vehicles, when repairs were completed under recall campaign 2017-199 (Kia RC109), the high pressure fuel pipe may not have been properly installed on the fuel pump outlet. A fuel leak could occur if the pipe was damaged, misaligned or improperly torqued during the recall repair. A fuel leak, in the presence of an ignition source, could create the risk of a fire causing injury and/or damage to property. Correction: Dealers will inspect the connections of the high pressure fuel pipe to the fuel pump outlet for leaking fuel. If leaking fuel is detected, the fuel pipe will be replaced with a new one.
Recall 201830165,548 units in Canada
Airbag
On certain gasoline and hybrid engine vehicles, the circuits within the airbag control unit may become damaged. This could cause the airbags and seat belt pretensioners to not deploy in certain collisions where deployment is warranted, which could increase the risk of injury to vehicle occupants. Correction: Dealers will install a wire harness kit between the ACU connector and vehicle harness connector as necessary. Note: This recall does not affect the 2013 model year Optima Hybrid.
Recall 201719937,504 units in Canada
Engine
On certain vehicles equipped with 2.0L and 2.4L engines, the engine may contain residual metallic debris from factory machining operations. If debris is present, it could potentially restrict oil flow to the main bearings and rod bearings and could lead to premature wear. If the vehicle continues to be driven with worn bearings, the bearings could fail, which could cause an engine stall while the vehicle is in motion, resulting in loss of motive power which could increase the risk of a crash causing injury and/or property damage. Worn bearings could also result in the illumination of the oil pressure lamp in the instrument cluster. Correction: Dealers will inspect, and if necessary, replace the engine sub-assembly.
Reports where the owner recorded a crash, a fire, an injury or a death.
Denison, TXFire
ENGINE
On July 14, 2026, the vehicle's engine was replaced by an authorized dealership under an official Kia recall. On August 16, 2026, while driving on the highway, heavy smoke suddenly began emitting from the engine compartment. When attempting to slow down, the braking system suffered a total loss of power and failed completely. To stop the vehicle, it had to be steered into the highway median to intentionally scrape against it to force a stop. Immediately upon exiting the vehicle, heavy flames were observed under the engine compartment before completely engulfing the front of the car. The fire department extinguished the fire, and the vehicle is a total loss.
NHTSA complaint #11758049 — an unverified report by a vehicle owner.
Denison, TXFire
SERVICE BRAKES
On July 14, 2026, the vehicle's engine was replaced by an authorized dealership under an official Kia recall. On August 16, 2026, while driving on the highway, heavy smoke suddenly began emitting from the engine compartment. When attempting to slow down, the braking system suffered a total loss of power and failed completely. To stop the vehicle, it had to be steered into the highway median to intentionally scrape against it to force a stop. Immediately upon exiting the vehicle, heavy flames were observed under the engine compartment before completely engulfing the front of the car. The fire department extinguished the fire, and the vehicle is a total loss.
NHTSA complaint #11758049 — an unverified report by a vehicle owner.
Denison, TXFire
FUEL/PROPULSION SYSTEM
On July 14, 2026, the vehicle's engine was replaced by an authorized dealership under an official Kia recall. On August 16, 2026, while driving on the highway, heavy smoke suddenly began emitting from the engine compartment. When attempting to slow down, the braking system suffered a total loss of power and failed completely. To stop the vehicle, it had to be steered into the highway median to intentionally scrape against it to force a stop. Immediately upon exiting the vehicle, heavy flames were observed under the engine compartment before completely engulfing the front of the car. The fire department extinguished the fire, and the vehicle is a total loss.
NHTSA complaint #11758049 — an unverified report by a vehicle owner.
at 140,000 milesWaynesboro, VAFire
ENGINE AND ENGINE COOLING
The contact owns a 2013 Kia Optima. The contact stated that while driving approximately 70 MPH with the cruise control activated, there was smoke coming from underneath the passenger’s side of the hood before the vehicle decelerated. The contact stated that moments later there were flames coming from the underneath the hood of the vehicle. The vehicle was parked on the side of the road and flames quickly engulfed the vehicle. The Fire Department was called to the scene and arrived and extinguished the fire. During the fire the vehicle was destroyed and was later towed to a nearby storage facility. While attempting to quickly exit the vehicle the contact fell to the ground and sustained an injured left leg and left side. The cause of the failure was not yet determined. The contact stated that the engine was recently installed related to a recall repair. No additional information was available. The manufacturer and local dealer were notified of the failure. The failure mileage was 140,000.
NHTSA complaint #11756709 — an unverified report by a vehicle owner.
at 130,000 milesHampton, VACrash1 injured
SEAT BELTS
The contact owned a 2013 Kia Optima. The contact stated that while driving at an undisclosed speed on the main road of a T-intersection, the contact blacked out before another vehicle crashed into the front passenger's side of the vehicle. The contact stated that the front of the vehicle sustained severe damages, and there was more damage on the front passenger's side of the vehicle. The air bags deployed. The contact stated that the seat belt retracted excessively, causing the contact to be pinned in the seat and to sustain severe injuries. The contact was assisted out of the seat and was partially unconscious. The contact was unsure if any warning lights were illuminated after the crash. A Police report was filed. The ambulance transported the contact to the hospital. The contact sustained a fractured L2 and back, ruptured bowel, and intestines and internal bleeding in the stomach. The contact underwent surgery and physical therapy. The vehicle was towed and deemed totaled by the insurance company. The manufacturer was notified of the failure and informed the contact that the VIN was not included in a related recall. A complaint was filed. The failure mileage was approximately 130,000.
NHTSA complaint #11744952 — an unverified report by a vehicle owner.
Goodyear, AZFire
ENGINE
My 2013 Kia Optima was running fine at 65 mph when suddenly the engine stalled. I then coasted to the shoulder and smelled burning plastic. As soon as I opened the hood the engine started being consumed in fire, it quickly went to a very large engine fire that consumed the front half of the car. There were no other vehicles involved with this incident. Vehicle is a total loss.
NHTSA complaint #11737190 — an unverified report by a vehicle owner.
The most recent complaints
In the owners' own words, exactly as filed with NHTSA.
at 250,000 milesKenosha, WI
FUEL SYSTEM, GASOLINE
The contact owns a 2013 Kia Optima. The contact stated that while driving or while the vehicle was parked, there was an abnormal fuel odor inside the vehicle. The vehicle was leaking fuel from the high-pressure pipe leading to the fuel pump. The contact associated the failure with NHTSA Campaign Number: 18V907000 (Fuel System, Gasoline, Engine); however, VIN was not included in the recall. The dealer was contacted; however, the vehicle was not diagnosed or repaired because the VIN was not included in recall. The manufacturer was made aware of the failure but offered no assistance. The contact was referred to the NHTSA Hotline. The failure mileage was approximately 250,000.
NHTSA complaint #11758174 — an unverified report by a vehicle owner.
at 250,000 milesKenosha, WI
ENGINE
The contact owns a 2013 Kia Optima. The contact stated that while driving or while the vehicle was parked, there was an abnormal fuel odor inside the vehicle. The vehicle was leaking fuel from the high-pressure pipe leading to the fuel pump. The contact associated the failure with NHTSA Campaign Number: 18V907000 (Fuel System, Gasoline, Engine); however, VIN was not included in the recall. The dealer was contacted; however, the vehicle was not diagnosed or repaired because the VIN was not included in recall. The manufacturer was made aware of the failure but offered no assistance. The contact was referred to the NHTSA Hotline. The failure mileage was approximately 250,000.
NHTSA complaint #11758174 — an unverified report by a vehicle owner.
Denison, TXFire
ENGINE
On July 14, 2026, the vehicle's engine was replaced by an authorized dealership under an official Kia recall. On August 16, 2026, while driving on the highway, heavy smoke suddenly began emitting from the engine compartment. When attempting to slow down, the braking system suffered a total loss of power and failed completely. To stop the vehicle, it had to be steered into the highway median to intentionally scrape against it to force a stop. Immediately upon exiting the vehicle, heavy flames were observed under the engine compartment before completely engulfing the front of the car. The fire department extinguished the fire, and the vehicle is a total loss.
NHTSA complaint #11758049 — an unverified report by a vehicle owner.
Denison, TXFire
SERVICE BRAKES
On July 14, 2026, the vehicle's engine was replaced by an authorized dealership under an official Kia recall. On August 16, 2026, while driving on the highway, heavy smoke suddenly began emitting from the engine compartment. When attempting to slow down, the braking system suffered a total loss of power and failed completely. To stop the vehicle, it had to be steered into the highway median to intentionally scrape against it to force a stop. Immediately upon exiting the vehicle, heavy flames were observed under the engine compartment before completely engulfing the front of the car. The fire department extinguished the fire, and the vehicle is a total loss.
NHTSA complaint #11758049 — an unverified report by a vehicle owner.
Denison, TXFire
FUEL/PROPULSION SYSTEM
On July 14, 2026, the vehicle's engine was replaced by an authorized dealership under an official Kia recall. On August 16, 2026, while driving on the highway, heavy smoke suddenly began emitting from the engine compartment. When attempting to slow down, the braking system suffered a total loss of power and failed completely. To stop the vehicle, it had to be steered into the highway median to intentionally scrape against it to force a stop. Immediately upon exiting the vehicle, heavy flames were observed under the engine compartment before completely engulfing the front of the car. The fire department extinguished the fire, and the vehicle is a total loss.
NHTSA complaint #11758049 — an unverified report by a vehicle owner.
at 140,000 milesWaynesboro, VAFire
ENGINE AND ENGINE COOLING
The contact owns a 2013 Kia Optima. The contact stated that while driving approximately 70 MPH with the cruise control activated, there was smoke coming from underneath the passenger’s side of the hood before the vehicle decelerated. The contact stated that moments later there were flames coming from the underneath the hood of the vehicle. The vehicle was parked on the side of the road and flames quickly engulfed the vehicle. The Fire Department was called to the scene and arrived and extinguished the fire. During the fire the vehicle was destroyed and was later towed to a nearby storage facility. While attempting to quickly exit the vehicle the contact fell to the ground and sustained an injured left leg and left side. The cause of the failure was not yet determined. The contact stated that the engine was recently installed related to a recall repair. No additional information was available. The manufacturer and local dealer were notified of the failure. The failure mileage was 140,000.
NHTSA complaint #11756709 — an unverified report by a vehicle owner.
at 139,000 milesHelendale, CA
STEERING
The contact owns a 2013 Kia Optima. The contact stated that while driving 30 MPH, the steering wheel was difficult to turn. There was an abnormal clicking sound coming from the vehicle and the vehicle was uncontrollable. The vehicle was towed to the local dealer, where it was diagnosed and determined that the coupling in the steering wheel needed to be replaced. The vehicle was not repaired. The manufacturer was contacted and confirmed that there was no coverage under the warranty extension for the MDPS flexible coupling. The failure mileage was approximately 139,000.
NHTSA complaint #11756253 — an unverified report by a vehicle owner.
Ellenwood, GA
SERVICE BRAKES
I am writing to formally report a dangerous safety defect involving the braking system and the Hydraulic Electronic Control Unit (HECU) on my 2013 Kia Optima Hybrid. While operating the vehicle, severe warning lights illuminated on the dashboard indicating an immediate braking system and stability control failure. A diagnostic scan revealed active fault code C1237, pointing specifically to a primary pressure sensor signal failure embedded inside the internal HECU assembly.This issue presents a severe safety hazard. The failure compromises the vehicle's electronic brake assist, anti-lock braking system (ABS), and active stability systems. This results in unpredictable pedal feel and significantly increased stopping distances, drastically elevating the risk of a high-speed collision.Furthermore, this vehicle architecture relies heavily on clean voltage from the 12-volt battery system. Sudden drops in battery performance appear to trigger cascading communication faults within the HECU network, causing the vehicle to lose crucial safety systems without adequate warning.Kia is aware of severe electrical and internal component defects within the HECU modules of this generation, as evidenced by Safety Recall SC284 (NHTSA Campaign 23V652000) for HECU internal electrical shorts and engine fire risks. However, dealerships are treating related sensor failures inside the exact same HECU assembly (such as the internal primary pressure sensor) as customer-pay maintenance issues, rather than recognizing them as symptoms of a fundamentally defective or failing control unit. Dealership service centers are recommending piecemeal, expensive part replacements (like pedal travel sensors) that do not resolve the underlying safety risk of an internally failing HECU module.I request that the NHTSA investigate whether internal pressure sensor failures (Code C1237) and related electronic brake module collapses on 2011–2015 Kia Hybrid models are connected to the known sub-component defects wi
NHTSA complaint #11752403 — an unverified report by a vehicle owner.
North Miami, FL
FUEL/PROPULSION SYSTEM
I own a 2013 Kia Optima and I am experiencing recurring fuel system-related symptoms. The fuel gauge fluctuates even when the vehicle has a full tank of fuel, causing an inaccurate fuel level reading. In addition, the vehicle has begun to hesitate during operation, which raises concern that there may be an underlying fuel delivery or fuel system issue. I previously experienced a similar issue years ago, and I believe the vehicle was repaired during a Kia recall or service campaign. The problem has now returned, and I am concerned that the previous repair may not have permanently corrected the issue or that there may be a related defect affecting other vehicles. The combination of an inaccurate fuel level reading and engine hesitation could create a safety concern because the driver may not know the true amount of fuel remaining and may experience unexpected loss of power while driving. I am requesting that this issue be investigated to determine whether it is related to a previous recall repair, a fuel system defect, or another safety-related condition affecting the 2013 Kia Optima.
NHTSA complaint #11751927 — an unverified report by a vehicle owner.
Congress, AZ
STRUCTURE:BODY
Paint began chipping/flaking off little by little everytime I washed the car. It’s a common occurrence with snowy white Kia paint in this year
NHTSA complaint #11751654 — an unverified report by a vehicle owner.
Lock Haven, PA
POWER TRAIN
the engine revs high and transmission wont shift and when you turn the steering wheel ya get a loud click and the steering wheels jumps
NHTSA complaint #11751411 — an unverified report by a vehicle owner.
Lock Haven, PA
STEERING
the engine revs high and transmission wont shift and when you turn the steering wheel ya get a loud click and the steering wheels jumps
NHTSA complaint #11751411 — an unverified report by a vehicle owner.
Lock Haven, PA
ENGINE
the engine revs high and transmission wont shift and when you turn the steering wheel ya get a loud click and the steering wheels jumps
NHTSA complaint #11751411 — an unverified report by a vehicle owner.
El Paso, TX
STEERING
The steering column From the car has diminished causing dangerous shaking on highway at high speeds
NHTSA complaint #11749153 — an unverified report by a vehicle owner.
at 130,000 milesHampton, VACrash1 injured
SEAT BELTS
The contact owned a 2013 Kia Optima. The contact stated that while driving at an undisclosed speed on the main road of a T-intersection, the contact blacked out before another vehicle crashed into the front passenger's side of the vehicle. The contact stated that the front of the vehicle sustained severe damages, and there was more damage on the front passenger's side of the vehicle. The air bags deployed. The contact stated that the seat belt retracted excessively, causing the contact to be pinned in the seat and to sustain severe injuries. The contact was assisted out of the seat and was partially unconscious. The contact was unsure if any warning lights were illuminated after the crash. A Police report was filed. The ambulance transported the contact to the hospital. The contact sustained a fractured L2 and back, ruptured bowel, and intestines and internal bleeding in the stomach. The contact underwent surgery and physical therapy. The vehicle was towed and deemed totaled by the insurance company. The manufacturer was notified of the failure and informed the contact that the VIN was not included in a related recall. A complaint was filed. The failure mileage was approximately 130,000.
NHTSA complaint #11744952 — an unverified report by a vehicle owner.
San Carlos, CA
UNKNOWN OR OTHER
Large delamination of paint on the vehicle.
NHTSA complaint #11743072 — an unverified report by a vehicle owner.
at 215,000 milesSaint Louis, MO
ENGINE AND ENGINE COOLING
The contact stated that while driving the vehicle began to unexpectedly slow and then stalled. The vehicle was unable to restart. No warning lights illuminated. The vehicle was taken to the dealer where it was not diagnosed or repaired. The manufacturer was notified of the issue. The approximate failure mileage 215,000.
NHTSA complaint #11739531 — an unverified report by a vehicle owner.
Lakeland, FL
ENGINE
I was driving on the high way and my car completely stopped I towed it to a shop and the engine seized
NHTSA complaint #11737743 — an unverified report by a vehicle owner.
Goodyear, AZFire
ENGINE
My 2013 Kia Optima was running fine at 65 mph when suddenly the engine stalled. I then coasted to the shoulder and smelled burning plastic. As soon as I opened the hood the engine started being consumed in fire, it quickly went to a very large engine fire that consumed the front half of the car. There were no other vehicles involved with this incident. Vehicle is a total loss.
NHTSA complaint #11737190 — an unverified report by a vehicle owner.
White Plains, MD
AIR BAGS
The vehicle is experiencing sudden engine stalling while in motion, a known safety hazard. Despite a documented maintenance history with no issues, the dealer (Bayside Kia) is attempting to deny a Theta II Settlement claim by shifting the narrative to 'engine sludge,' which only appeared as a symptom in June 2025( Walmart oil change) alongside engine performance issues. The vehicle has active codes P0014 and P0017, which are secondary symptoms of the internal bearing wear and metallic debris contaminating the oiling system. KDS Diagnostic tests showed Cylinder 1 at 0.16mm (approaching the 0.20mm failure limit). This clearance proves the connecting rod bearings are worn and reaching the failure threshold; this mechanical wear is the root cause of the engine's inability to operate safely. The presence of metallic debris in the oil is the definitive signature of the Theta II manufacturing defect. Furthermore, the dealer acted in bad faith by attempting to charge for Airbag repairs (Codes B1346/B1481) that are covered under the 15-year Clock Spring Warranty Extension (CS1102). The dealer has dismissed my qualifying maintenance documents, claiming they are 'not official,' which is a direct violation of the Magnuson-Moss Warranty Act. A manufacturer cannot deny a warranty claim because services were performed at third-party facilities, nor can they deny a claim without proving 'exceptional neglect.' I am reporting a refusal to honor a court-ordered safety settlement and an attempt to return an unsafe, stalling vehicle to the road.There is no evidence of engine abandonment or exceptional neglect. I’m considered "in compliance" if I can show I didn't go more than 14 months without servicing or a certain mileage between oil changes.The dealer's dismissal of verified third-party receipts and bank statements is a bad-faith attempt to ignore an inherent manufacturing defect documented by a 0.16mm BCT result and metallic debris.
NHTSA complaint #11736691 — an unverified report by a vehicle owner.
White Plains, MD
ENGINE
The vehicle is experiencing sudden engine stalling while in motion, a known safety hazard. Despite a documented maintenance history with no issues, the dealer (Bayside Kia) is attempting to deny a Theta II Settlement claim by shifting the narrative to 'engine sludge,' which only appeared as a symptom in June 2025( Walmart oil change) alongside engine performance issues. The vehicle has active codes P0014 and P0017, which are secondary symptoms of the internal bearing wear and metallic debris contaminating the oiling system. KDS Diagnostic tests showed Cylinder 1 at 0.16mm (approaching the 0.20mm failure limit). This clearance proves the connecting rod bearings are worn and reaching the failure threshold; this mechanical wear is the root cause of the engine's inability to operate safely. The presence of metallic debris in the oil is the definitive signature of the Theta II manufacturing defect. Furthermore, the dealer acted in bad faith by attempting to charge for Airbag repairs (Codes B1346/B1481) that are covered under the 15-year Clock Spring Warranty Extension (CS1102). The dealer has dismissed my qualifying maintenance documents, claiming they are 'not official,' which is a direct violation of the Magnuson-Moss Warranty Act. A manufacturer cannot deny a warranty claim because services were performed at third-party facilities, nor can they deny a claim without proving 'exceptional neglect.' I am reporting a refusal to honor a court-ordered safety settlement and an attempt to return an unsafe, stalling vehicle to the road.There is no evidence of engine abandonment or exceptional neglect. I’m considered "in compliance" if I can show I didn't go more than 14 months without servicing or a certain mileage between oil changes.The dealer's dismissal of verified third-party receipts and bank statements is a bad-faith attempt to ignore an inherent manufacturing defect documented by a 0.16mm BCT result and metallic debris.
NHTSA complaint #11736691 — an unverified report by a vehicle owner.
White Plains, MD
FUEL/PROPULSION SYSTEM
The vehicle is experiencing sudden engine stalling while in motion, a known safety hazard. Despite a documented maintenance history with no issues, the dealer (Bayside Kia) is attempting to deny a Theta II Settlement claim by shifting the narrative to 'engine sludge,' which only appeared as a symptom in June 2025( Walmart oil change) alongside engine performance issues. The vehicle has active codes P0014 and P0017, which are secondary symptoms of the internal bearing wear and metallic debris contaminating the oiling system. KDS Diagnostic tests showed Cylinder 1 at 0.16mm (approaching the 0.20mm failure limit). This clearance proves the connecting rod bearings are worn and reaching the failure threshold; this mechanical wear is the root cause of the engine's inability to operate safely. The presence of metallic debris in the oil is the definitive signature of the Theta II manufacturing defect. Furthermore, the dealer acted in bad faith by attempting to charge for Airbag repairs (Codes B1346/B1481) that are covered under the 15-year Clock Spring Warranty Extension (CS1102). The dealer has dismissed my qualifying maintenance documents, claiming they are 'not official,' which is a direct violation of the Magnuson-Moss Warranty Act. A manufacturer cannot deny a warranty claim because services were performed at third-party facilities, nor can they deny a claim without proving 'exceptional neglect.' I am reporting a refusal to honor a court-ordered safety settlement and an attempt to return an unsafe, stalling vehicle to the road.There is no evidence of engine abandonment or exceptional neglect. I’m considered "in compliance" if I can show I didn't go more than 14 months without servicing or a certain mileage between oil changes.The dealer's dismissal of verified third-party receipts and bank statements is a bad-faith attempt to ignore an inherent manufacturing defect documented by a 0.16mm BCT result and metallic debris.
NHTSA complaint #11736691 — an unverified report by a vehicle owner.
Salisbury, NC
ENGINE
We were told by the mechanic that the engine was locked up after the car refused to drive faster than approximately 23 mph. We had to have the car towed from Boone, NC which was about 200 miles. The car is at our house and is available for inspection upon request. I have made repeated calls to different Kia dealers asking for a call back to assist me with direction but there will never be a returned phone call. As far as I know, there has been no inspection of the engine or vehicle.
NHTSA complaint #11736295 — an unverified report by a vehicle owner.
Snellville, GA
UNKNOWN OR OTHER
Code : P1777 Transmission- oil pump A issue with the Valve cover gasket leaking into the engine causing a misfire. Making the car suddenly stop while driving which is very unsafe. I took the car to the dealership and they want to charge me for the repairs. I have 2 kia optima hybrid and both cars have the same issue around the same mileage. There were no warning lights during the time it was at the shop. I believe later down the line the engine will stall out and it should be fixed now while under warranty. However I received no help from the dealership unless I am willing to pay upfront. In addition to this there are electrical issues the front seats aren't moving immediately when the button is pressed. The steering wheel buttons barely work along with the radio. This is a huge problem that needs to be fixed.
NHTSA complaint #11734775 — an unverified report by a vehicle owner.
Snellville, GA
ELECTRICAL SYSTEM
Code : P1777 Transmission- oil pump A issue with the Valve cover gasket leaking into the engine causing a misfire. Making the car suddenly stop while driving which is very unsafe. I took the car to the dealership and they want to charge me for the repairs. I have 2 kia optima hybrid and both cars have the same issue around the same mileage. There were no warning lights during the time it was at the shop. I believe later down the line the engine will stall out and it should be fixed now while under warranty. However I received no help from the dealership unless I am willing to pay upfront. In addition to this there are electrical issues the front seats aren't moving immediately when the button is pressed. The steering wheel buttons barely work along with the radio. This is a huge problem that needs to be fixed.
NHTSA complaint #11734775 — an unverified report by a vehicle owner.