KIA Complaints

Expansion of air tank, causing to pop up frame in backseat and total car deemed unsafe to drive. No warnings car had never been in the shop prayer happened while driving over rule Mountain area with two children in the backseat. Kia inspected diagnostic ran stated it was air in gas tank under a recall claim to fix it for free and then two weeks later stated it was going to Kia America for a case number. Kia America called and stated that it was not safe to drive and the car is totaled.

A/C system on my 2024 Kia Carnival failed twice within weeks. First at 60,100 miles, repaired at dealership for $398. Then again shortly after, leaving vehicle undrivable in summer heat. Kia has done nothing despite having a case number (#25267950). This is a recurring failure that affects safety and comfort during high-temperature seasons. I believe this is a manufacturer defect and request a formal investigation.

In June 2025, while driving my 2023 Kia K5 (VIN: [XXX] ) at highway speeds on [XXX], the fuel tank suddenly imploded. A loud bang caused the rear seats to lift, startling me and my passengers. The car lost power, and braking too hard risked leaving us stranded in fast-moving traffic. I narrowly avoided a crash while trying to maneuver us to safety. This vehicle was previously recalled by Kia in April 2024 for a fuel tank defect affecting ~236,000 vehicles. I took it to Gunther Kia in Davie, FL for inspection, and they claimed it was fixed. In March 2025, I returned to Hollywood Kia because of popping sounds and a check engine light. They diagnosed and “repaired” a purge control valve but failed to address the underlying defect. Despite these repairs, the catastrophic failure still occurred. The vehicle is now completely inoperable and irreparable. Kia later offered to buy back the vehicle but failed to respond to over 200 calls and dozens of emails from me, allowing their offer to expire without explanation. This left me paying for a vehicle I can no longer use. This defect poses a serious danger not only to me and my passengers but also to thousands of other K5 owners nationwide. I urge NHTSA to investigate Kia’s recall handling and ensure affected vehicles are properly repaired to prevent injury or death. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I was driving my 2023 Kia Niro PHEV into my garage after running an errand, going very slowly. Suddenly the vehicle--all on its own--surged forward, slammed into the rear wall (triggering air bags), ricocheted backward across the street, and struck a neighbor's fence. I was able to get out of the car but I was in shock; paramedics were called. Ultimately, my injuries were found to be limited to bruised ribs, but it has been very painful and limiting. The vehicle was towed to a repair shop where it was pronounced a total loss. I received a settlement check from my insurance company, but I am out-of-pocket for the deductible, costs relating to getting a new vehicle, and of course the pain and suffering. I was told there was an event data recorder (EDR) on the vehicle, and my insurance adjuster will tell me what it reveals (I hope). There was no warning of any kind that this was about to happen. I was fortunate that it happened where it did; had I been driving the vehicle on the street, I could have killed someone (including myself).

I’m the owner of a 2025 Kia Sportage PHEV and I’m experiencing a critical software bug: the car does not retain my custom driver assistance settings. Specifically, I have a bike rack installed on the rear hitch. I disable automatic rear emergency braking to avoid false stops when reversing, but the setting resets every time I turn off the vehicle. This leads to the car emergency braking unnecessarily — the car will suddenly brake when trying to reverse out of a parking space. This is not a dealer-specific issue — it’s affecting other 2025 Sportage models as well. I’d like to know: Has Kia acknowledged this issue or issued a Technical Service Bulletin (TSB)? Is a software update being developed to allow driver-assist settings to persist through vehicle restarts?

Oil pressure light illuminated, extreme engine knocking, failed acceleration power and engine stalling while driving. Towed to dealership. Was told the vehicle "passed" the oil piston ring recall test and refusal of Kia to replace engine.

Upon collision with another vehicle, there was no deployment of any airbags. The vehicle is available for inspection. I was in a head on collision and due to the severity and deployment of the other vehicles airbags, I believe that mine should have as well. The vehicle is currently in the process of being inspected by insurance. A police report was filed for the incident. There was no prior indication of this malfunction.

Driving in traffic at night. Engine suddenly began running erratically, lost power and died. Upon opening the hood I found oily coolant all over the engine compartment that had shorted out the engine electrical systems. I determined that it has shorted out from coolant because after sitting for about 30 minutes the coolant apparently evaporated and the engine started again. This could have been life threatening to my wife, me and others if the engine had died on the very curvy road we'd just gotten off of. I have since found out that there is a TSB (WTY035) that extends the warranty due to faulty head bolts. But this is also a safety issue.

The contact owned a 2012 Kia Optima. The contact stated that while driving 60 MPH, the vehicle jerked, with an abnormal hissing sound coming from the front of the vehicle. The contact stated that there was smoke coming from the rear of the vehicle and entering the cabin of the vehicle through the A/C vents. The contact stated that several warning lights were illuminated. The contact pulled over to the side of the road and the vehicle was towed to an independent mechanic. The contact was informed that there was a hole in the engine. The contact was informed that the engine needed to be replaced. The vehicle was not repaired due to the cost. The manufacturer was not notified of the failure. The contact notified the insurance company; however, no claim was filed. The failure mileage was approximately 160,000.

My Kia optima fe 2017 has been consuming a lot of motor oil it takes a quart every 2 to 3 weeks and of if I drive it more than average it needs motor oil sooner