Kia Optima Complaints

7,843 consumer complaints on file.

#11678127August 4, 2025
ENGINE, UNKNOWN OR OTHER
--- **Summary of Complaint – 2017 Kia Optima** My 2017 Kia Optima (VIN: [XXX] ) experienced sudden engine failure due to a damaged piston. There were no warning signs—no knock codes or dashboard alerts—prior to the malfunction. Despite regular maintenance and timely oil changes, Kia denied warranty coverage, leaving me with significant repair costs. This issue appears consistent with reported engine problems in similar Kia models and could represent a broader manufacturing defect. I'm submitting this report in hopes of prompting an investigation into a potential safety hazard. A recall may be necessary to prevent similar failures and protect INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11678323August 4, 2025
AIR BAGS, STRUCTURE:BODY, ENGINE
I have pictures
Crash:
Yes
Fire:
No
Injuries:
2
Deaths:
0
#11678073August 3, 2025
ENGINE
My 2018 Kia Optima went into limp mode while exiting the freeway. I had it scanned and received a P1326 code, which is directly tied to the known engine knock sensor / bearing wear issue in Kia models. The engine light came on and the car lost power suddenly. This created a very unsafe situation. I contacted Kia, and they confirmed that my VIN is not included in the engine recall (KSDS campaign), even though my symptoms exactly match the covered vehicles. I am now stuck with an undriveable car and no recall coverage, even though I’m facing the same failure risk. I believe this VIN should be included, and that this is a clear safety issue. I am requesting the NHTSA to investigate and push Kia to expand coverage to include more affected vehicles.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11678118August 3, 2025
ENGINE
Purchased 2015 Kia optima LX 4 cylinder. Had the car for 7 months. Driving home car stalled driving into our driveway. When restarted the engine there was a loud noise tapping. Oil light came on. Checked oil it was on empty. No oil light has come on ever before the car stalled. Regular oil changes . Researched the over 900 complaints. Same thing that has happened to everyone else. Thankfully this didn't happen on the drive home in traffic.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11677745August 1, 2025
ENGINE
After adding oil..Car stopped while driving…Smoke and Fire occurred.. Now engine will not start.. 2 Mechanics Stated “Engine needs to Be Replaced”… A/C Front Blower Doesn’t Work Console Has a Short and Doesn’t Work
Crash:
No
Fire:
Yes
Injuries:
0
Deaths:
0
#11677794August 1, 2025
ENGINE AND ENGINE COOLING
The contact owns a 2013 Kia Optima. The contact stated while driving 45 MPH, the vehicle stalled. The low oil pressure warning light flashed on the instrument panel. The contact called Roadside Assistance and was informed that the oil level was low. The vehicle was towed to an independent mechanic, where an oil change was performed; however, the failure persisted. The vehicle was then towed to a dealer, where it was diagnosed with engine failure. The manufacturer was notified of the failure and informed the contact that the repair could not be covered under warranty because the knock sensor detection system software was not previously updated under warranty. The vehicle was not repaired and remained at the dealer. The failure mileage was approximately 119,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11677869August 1, 2025
EXTERIOR LIGHTING
Vehicles Low-Beam headlights are very poor. Brought for service/adjustments and was advised that they were properly aimed and that nothing more could be done other than installing brighter headlights. While driving at night I need the fog lights or the high-beam lights on for proper visibility which could cause issues for other drivers on the road.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11677547July 31, 2025
ENGINE
Driving towards town on freeway car suddenly die at high rate of speed and lost power at the wheel had to sway to side of road opened up hood of the car and smoke came out had recker pick me up and drove it to the house and started to find the issue and the starter module burn up . the gas line was near started . replace starter and now the car doesn’t crank so is used wrench to trunk motor and now more seized up remove spark plugs and tried manually turn motor nothing lookup recalls on the matter and it said it was recall on the main bearing of the car are premature and Kia won’t honor the recall due to no oil change records I have all items bought and tow truck expense
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11677636July 31, 2025
ENGINE
The contact owns a 2013 Kia Optima. The contact stated while driving 25 MPH, the engine seized. There was no warning light illuminated. The vehicle was towed to the residence. The dealer was contacted; however, the vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 140,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11677168July 30, 2025
ENGINE
While driving my 2015 Kia Optima, the engine suddenly failed without warning. I noticed a loss of power, and shortly after, the oil pressure warning light illuminated. Upon pulling over safely, I discovered that the engine had drained all of its oil, despite recent maintenance. There were no prior warning signs or leaks visible. This posed a serious safety risk as the failure occurred in the midst of traffic. The vehicle had approximately 75,885 miles at the time. A mechanic later confirmed catastrophic engine failure due to oil starvation. This issue appears to be consistent with known engine defects in similar Kia models.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11677194July 30, 2025
ENGINE
The contact owns a 2015 Kia Optima. The contact stated while the contact's wife was driving at an undisclosed speed, the vehicle made an abnormal ticking sound. There was no warning light illuminated. The vehicle was taken to an independent mechanic, where the contact was informed that the failure could be related to the engine. The vehicle was then taken to the dealer, where it was diagnosed that the engine had failed. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was filed. The contact was informed that the VIN was included in an unknown related engine recall; however, the engine repair or replacement was not covered under warranty due to missing service documents. The failure mileage was approximately 78,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11677195July 30, 2025
ENGINE, POWER TRAIN, FUEL/PROPULSION SYSTEM
While driving my 2017 Kia Optima (Theta II engine) at approximately 115,900 miles, I suddenly experienced engine failure. The vehicle began to stall and produced a burning smell shortly before the engine seized completely. I had the car towed to a Kia dealership, which confirmed an internal engine failure and noted that there were no signs of external oil leaks or neglect. The failure occurred only 4,500 miles after my last oil change, which was documented and professionally completed. The Kia technician mentioned verbally that this was due to excessive oil consumption and burning — an issue I later found to be widely reported in other Kia vehicles using this engine type. The estimated repair cost is over $14,000, which is more than the value of the vehicle. Despite my warranty being expired, this type of failure appears consistent with known manufacturing defects. I am reporting this for public safety and accountability. The vehicle failed without warning and could have caused a dangerous situation on the road.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11677339July 30, 2025
ENGINE
While driving, the engine suddenly shut off without warning. The car coasted to a stop and would not restart. When attempting to start it again, the starter smoked, and the engine would not crank or turn over. This is a serious safety hazard as the engine failure occurred with no warning and matches the symptoms of the known Kia Theta II engine recall for bearing and seizure issues. My VIN is not currently listed as part of the recall, but it experienced the exact same failure. I am requesting that NHTSA investigate and pressure Kia to include my VIN in the recall campaign, as this is a sudden engine seizure defect that could cause a crash if it happens at speed.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11677350July 30, 2025
ENGINE, POWER TRAIN, UNKNOWN OR OTHER
Excessive oil consumption started at 61,000 miles, causing engine misfires and dangerous power loss on the road. Engine codes 1326 and P0304 were frequent. Despite numerous services, including sensor replacements, spark plugs and oil top-offs, the problem worsened. At 97,769 miles, the dealer said a full engine replacement is needed along with other pertinent repairs related to the engine are needed. The situation was life-threatening each time as they occurred while driving and I now no working vehicle after my husband's recent death. Kia dealerships acknowledged the defect but refused to replace the engine and advised that Kia Corporate was refusing, although no claim information was ever provided that they indeed contacted the corporate office. I am seeking NHTSA support in holding Kia accountable.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11677087July 29, 2025
ENGINE
I am the owner of a 2019 Kia Optima FE with the 2.4L GDI engine (Theta II). Despite following a consistent maintenance schedule with synthetic oil changes every 4,000 to 6,000 miles, the vehicle is experiencing premature engine failure. Specifically, the engine has internal valve damage, and the shop diagnosed the issue as failure of an internal valve component. The vehicle also has a leaking axle inner boot, but the major concern is the engine. Kia has refused warranty coverage, goodwill assistance, or recall support despite this engine being part of a long-standing pattern of issues documented across many Kia and Hyundai vehicles with the Theta II platform. I still owe approximately $10,000 on this vehicle, and now face a potential $5,000+ repair due to a known manufacturing defect. Kia Consumer Affairs and the dealership both declined assistance, claiming my warranty has expired, even though this engine has been involved in class action lawsuits, extended warranties, and TSBs related to premature wear, oil consumption, and mechanical failure. I am submitting this complaint to formally report the issue and to urge the NHTSA to continue investigating Kia’s 2.4L Theta II engine failures, as they represent a potential safety and financial risk to consumers. Many drivers are left stranded or in serious debt due to an engine defect they could not have prevented.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11676550July 28, 2025
ENGINE
Burning oil, not wanting to accelerate properly on the freeway, kia has engine in previous years having the same issue, and these 2020 and they are not trying to fix them.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11676566July 28, 2025
ENGINE
No FireNo Injuries0 Deaths0 I’m experiencing severe oil consumption and spark plug fouling, which are known problems with the GDI engine. This is affecting driveability and may indicate piston ring or valve seal failure. My engine code starts with G4KJ which falls under the current recall, but my vin does not show up. Why isn't my car eligible? I have called Kia and their response was to call my local dealership. Started noticing the issue on [XXX]. Called dealership at that time and they said my car doesn't qualify. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11676468July 27, 2025
ENGINE
Code P1326, Faulty Knock sensor on 2.4GDI
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11676220July 25, 2025
UNKNOWN OR OTHER
While driving at approximately 45/50 mph, the right rear window suddenly dropped into the door panel without warning. This unexpected failure startled me and created a distraction while driving, as well as compromised my ability to hear and concentrate safely. My left rear window has also slipped into the door panel and is now being held up by shims and I have now discovered that the issue is due to a failed window regulator. This is a known issue in similar vehicles and poses a potential safety hazard, especially during adverse weather or high-speed driving. The Manufacturer has not issued a recall only a bulletin and the cost that was quoted to me from Hendrick Kia of Concord was over $900 dollars a regulator.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11675942July 24, 2025
STEERING
I called Kia Consumer Assistance in reference the MDPS flexible coupling. I spoke with a Kia representative named Gina. I specifically asked if this item is covered under my vehicles warranty (i gave the vin number of the vehicle to her. She stated if it was diagnosed as the MDPS flexible coupling, it would be covered. I made an appointment (it took two weeks) with Spitzer Kia at 3414 Brookpark Rd, Cleveland, Ohio 44134. The service advisor, Belinda Frost, stated, yes the MDPS flexible coupling needs to be replaced. I gave the case number from Kia, #[XXX]. She looked and said it is not covered. I told her Gina from Kia consumer assistance stated it is covered. She called Kia, spoke with "Brad" who stated I would need to pay a $93.00 diagnostic charge (car was already diagnosed with the issue) and leave the car for 24 to 48 hours. During that time, they would make a determination if it is warrantied - I believe that other person's name was Robert - the regional manager. He would need to approve coverage for the MDPS flexible coupling. The diagnosis is to turn the steering wheel while the engine is off for play and a clunking sound, which takes 30 seconds and was already done. Also note this is a hazard as the car wanders due to additional play in the steering, sometimes has a notch, taking more effort to turn the wheel slightly plus makes a metal on metal sound when going over bumps. This $10.00 part, should be mandated to replace without a time limit. I was also told it was covered by warranty by Kia consumer after giving the serial number, and that was NOT honored by the dealership nor Kia consumer when the dealer ship called in my presents. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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