Data sourced from NHTSA public database. For informational purposes only. Always consult a qualified mechanic.
2012 Kia Optima — Known Issues & Recalls
Complaints from Jan 2013 to Dec 2014
The most reported issue is engine problems (269 complaints). 25 complaints involved crashes. 76 involved fires.
Open Safety Recalls (5)
NHTSA Campaign: 18V907000
Component: 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.
Fix: 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.
NHTSA Campaign: 18V363000
Component: 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.
Fix: Kia will notify owners. For model year 2011 Sedona vehicles, Kia will instruct dealers to verify the ACU part number and, if necessary, install an extension wire harness kit between the ACU Connector and the Vehicle Harness Connector. For all other affected vehicles, Kia will instruct dealers to install the extension wire harness kit. The recall began September 28, 2018. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC165.
NHTSA Campaign: 17V224000
Component: ENGINE AND ENGINE COOLING:ENGINE
Kia Motor Company (Kia) is recalling certain 2011-2014 Optima, 2012-2014 Sorento and 2011-2013 Sportage vehicles. Machining errors during the engine manufacturing process may cause premature bearing wear within the engine.
Risk: Bearing wear may result in the engine seizing, increasing the risk of a crash.
Fix: Kia will notify owners, and dealers will inspect the engine assembly, and replace the engine if necessary, free of charge. The recall began June 20, 2017. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC147.
NHTSA Campaign: 22V560000
Component: 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.
Fix: Dealers will secure the headliner plates, free of charge. Owner notification letters were mailed September 26, 2022. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC245.
NHTSA Campaign: 23V652000
Component: 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.
Fix: 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.
Owner-Reported Issues (20 of 908)
Engine →4 issues
Your engine suddenly shut down completely without any warning lights or symptoms, even though the car has been well-maintained. A mechanic diagnosed this as engine failure. This happened right after you exited the highway, but could have been dangerous if it occurred while driving at highway speeds.
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Your 2012 Kia Optima shut down suddenly while driving on the interstate without any warning lights or signs of trouble. The dealership determined the engine needs to be replaced but has been unclear about their diagnosis, moved your car to a third-party location without clear communication, and the vehicle is now accumulating storage fees at a towing company. Resolving this will require the dealership to provide a clear diagnostic report and work with you to address the engine failure and associated costs.
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Your engine's internal bearings wore out, causing the engine to seize and stop running. This is a serious mechanical failure that will require engine replacement or a complete rebuild.
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Your engine bearing is wearing out prematurely, a problem that existed before you bought the car. The Kia service center performed recalls but refused to fix the bearing issue, claiming it wasn't checked before failure occurred—even though you only owned the vehicle for 2 days before problems started. Fixing this will likely require bearing replacement or engine rebuild.
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Power Train →2 issues
While driving in traffic, your vehicle suddenly lost power and began jerking without warning, forcing you to pull over to avoid a collision. A dealership confirmed the problem is related to an active safety recall (23V6552) but refused to repair it because your vehicle has over 150,000 miles. The repair would involve addressing the affected powertrain component covered under the recall to restore normal engine operation and vehicle control.
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Your gear shifter moved into park, but your dashboard still displayed a message telling you to shift into park. You also experienced delays when shifting between gears. Multiple dealers were unable to reproduce the problem during testing, though one dealer suggested the transmission might need replacement. Based on your research, you believe the issue is related to a transmission control module (TCM) failure.
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Air Bags →2 issues
Your vehicle was involved in a serious collision where an SUV hit the front driver side, causing you to lose control and hit a tree head-on. During this crash, your airbags did not deploy and your seat belt's emergency locking retractor failed to lock, allowing you to be thrown forward and hit your head on the steering wheel. You suffered chest pain, neck pain, and a possible concussion requiring hospitalization. A fix would likely involve inspection and replacement of the airbag system components and seat belt retractor mechanism by a qualified technician.
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Your steering wheel buttons stopped working while driving, and no warning lights appeared on your dashboard. The dealer diagnosed the problem as a faulty clock spring assembly and replaced it, but the buttons remained inoperative even after the repair. There may be an unknown recall for your vehicle that wasn't fully applied. Fixing this will likely require replacing or rewiring the clock spring assembly or related steering wheel electrical components.
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Engine And Engine Cooling →2 issues
Your engine makes a knocking sound when it starts up. Your car is included in a recall (Campaign 17V224000) for this issue, but the manufacturer refused to fix it because the previous owner didn't respond to the recall notice. The dealer confirmed the manufacturer won't honor the recall due to the previous owner's inaction. Resolving this typically involves having the engine inspected and repaired or replaced under the recall coverage.
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See attached document for complaint.
Electrical System,engine →1 issue
While driving, your car suddenly died and started smoking without any warning lights appearing beforehand. After the incident, all warning lights came on the dashboard. You lost power steering control and couldn't move out of traffic, creating a dangerous situation.
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Power Train,exterior Lighting,engine →1 issue
Your 2012 Kia Optima Hybrid experienced a serious engine failure with thick smoke coming from the engine compartment and the engine stalling while you were driving — a significant fire hazard. You took it to a Kia dealership for a recalled engine repair, but the dealership refused to perform the free recall work, charged you $199 for a diagnostic inspection, and threatened storage fees to pressure you into leaving with the still-broken vehicle. The dealership released your unsafe car back to you without completing the required recall repair, and your vehicle remains unrepaired at home.
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Electrical System,air Bags,engine →1 issue
Your 2012 Kia Optima Hybrid has metal shavings and debris circulating in the engine oil system, and metallic residue has been found in the oil pump. This suggests that parts covered under previous recall campaigns (NHTSA recalls 20V750 and 23V652) were never replaced, even though your vehicle qualifies. With nearly 250,000 miles on the engine, the lack of these critical repairs poses a safety risk and could lead to engine failure. The fix would likely involve replacing the affected engine components as outlined in the applicable recall campaigns.
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Electrical System,unknown Or Other,engine →1 issue
While driving on the highway, your car started smoking and shut down completely, then wouldn't start back up. You noticed a burnt smell coming from the engine area. This suggests an electrical or engine problem that caused the vehicle to lose power entirely.
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Engine And Engine Cooling,firerelated →1 issue
Your 2012 Kia Optima's engine caught fire and seized, which matches three open safety recalls (SC147, SC200, SC201) that warn of engine seizure and fire risk. The fire also damaged your starter, and the dealership says your engine needs complete replacement, but Kia has refused to cover the recall work. Getting your engine replaced will likely involve a full engine swap at a dealership, and your starter will need to be replaced as well.
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Electrical System,vehicle Speed Control,service Brakes →1 issue
Your instrument panel may display "Check Brake" and "Hybrid System Warning! Safely Stop and Do not Drive" messages while parked or driving, and your engine may stop responding to the gas pedal. When you press the brake pedal, it may lose pressure and then suddenly lock up with a grinding noise, causing your car to come to a grinding halt without responding to your input. This is a serious safety issue that has been reported across multiple Kia hybrid models and years, though your dealer may not be able to reproduce it during testing. The problem likely involves the brake system pressure sensor or hybrid system control module and may require diagnostic testing and potential replacement of affected components.
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Vehicle Speed Control,service Brakes →1 issue
Your brakes grab or snatch hard when you press the pedal. When accelerating, your car hesitates and won't speed up normally, and at highway speeds (45-55 mph) pressing the gas pedal doesn't increase acceleration—instead it feels like the car is losing power and wants to slow down. The issue may involve the brake system grabbing unexpectedly and the engine not responding properly to throttle input.
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Unknown Or Other,service Brakes,engine →1 issue
Your car experienced an unknown failure while parked after you returned from work, and you believe if you had remained in the vehicle longer, it could have been serious. A week before this incident, your check engine light came on with a message to check your brakes, but the next morning the light was gone and everything appeared to work normally. The exact cause of the failure hasn't been determined since the car hasn't been inspected yet.
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Electrical System,service Brakes →1 issue
Your car's anti-lock braking system (ABS) is not working properly. This system normally helps prevent your wheels from locking up during hard braking, especially on slippery surfaces. A repair will likely involve diagnosing the ABS module, sensors, or wiring to identify and fix the failure.
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Unknown Or Other →1 issue
Your car's doors are unlocking while you're driving, which is a safety concern since it could allow doors to open unexpectedly. This could be caused by a faulty door lock actuator, wiring issue, or central locking system malfunction. A mechanic will need to diagnose the locking system to identify which component is failing and replace or repair it.
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