KIA Complaints

I am reporting a serious defect involving my 2017 Kia Sorento 2.4 Liter GDI engine (VIN [XXX] ) At approximately 84000 miles, while still under the powertrain warranty, I brought the vehicle to the dealership from which I purchased it (Hutchinson Kia in Macon GA) due to engine hesitation and abnormal performance. I was initially told the engine might need replacement, but the dealer later claimed the issue was only a relay/software problem and performed a software update (likely the KSDS knock sensor update) At approximately 94000 miles, the engine suffered a SUDDEN CATASTROPHIC FAILURE while driving on the interstate, The failure was abrupt and created a dangerous situation in traffic. The Vehicle is now inoperable. The engine is equipped with the THETA II GDI engine, which has a documented history of bearing and connecting -rod failures, fires and sudden engine seizure. KIA is refusing to cover the failure, even though the symptoms began during warrantly and the KSDS update was reportedly completed. This appears to be consistent with the widespread THETA II engine safety defect previously investigated by NHTSA. The sudden failure of the engine posed a significant safety risk to myself, passengers and other motorists. I am requesting the NHTSA review the incident and evaluate whether KIA is properly honoring required safety-related engine replacements for Thet II GDI equipped vehicles. Thank You. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The heat exchanger (exhaust heat recovery system) on my 2017 Kia Niro has been diagnosed by an authorized Kia dealership as leaking coolant. The failed component can be available for inspection upon request. This failure poses a serious safety risk. The heat exchanger is part of the vehicle’s cooling system, and when it leaks, the engine can rapidly lose coolant while driving. This can lead to sudden overheating, reduced power, or potential engine shutdown in traffic. A driver may not receive immediate warning, and if the vehicle overheats unexpectedly at highway speeds, it can put both the occupants and surrounding drivers at risk of a collision. Coolant leaking into the exhaust system can also create steam and white smoke that may impair visibility for the driver or other vehicles. The problem has been confirmed by a Kia dealership, which inspected the vehicle and provided a repair estimate of over $3,500 for heat exchanger replacement. The vehicle has not been inspected by the police or insurance representatives. In my case, there were no warning lamps or messages prior to the diagnosis. The vehicle did not illuminate a check-engine light related to the failure or coolant warning, meaning the failure could easily occur without the driver’s knowledge until the engine overheats or loses power while on the road. This lack of warning significantly increases the safety risk. Given the number of owners reporting identical heat-exchanger failures, the high repair cost, and the potential for sudden overheating or power loss, this appears to be a widespread safety-related defect that warrants investigation.

My 2023 Kia Sportage AWD has several ongoing safety issues that have been happening for over a year. The car stalls or hesitates at low speeds and during acceleration. I hear grinding or whining noises from the front end and drivetrain. My brakes wore out very early and still feel inconsistent, and the automatic braking acts unpredictable. The AWD system sometimes feels unstable when I try to accelerate. The tire pressure warning light comes on often even when the tires are fine. These issues happen randomly and make the car feel unsafe to drive. I am reporting this for safety investigation.

My vehicle caught fire while driving also before fire vehicle started popping and stuttering rattling sound. I was on highway.

My 2021 Kia Seltos is experiencing engine problems that match the piston-ring defect involved in Kia Recall SC336. I first took the vehicle to the dealership in August 2025 for excessive oil consumption and engine knocking. The dealer documented the engine was 1 quart low and stated the oil was “most likely being used internally getting past the piston rings.” However, they only performed the software update from SC336 and did not perform any internal engine inspection. Since that visit, the condition has significantly worsened. The vehicle is now consuming more oil than before, the knocking/ticking noises have become louder and more frequent, and fuel economy has declined. I am adding oil between changes to keep the engine from running dangerously low. There are no external leaks, so the oil is being burned internally, which is consistent with piston-ring failure. These symptoms are identical to other Seltos vehicles already included in the recall, yet my VIN is not currently part of it. The progression of engine noise and oil consumption raises serious safety concerns, including potential engine failure, loss of power, or stalling while driving. The dealer acknowledges the internal oil use but refuses further diagnostic work without direction from Kia. I am reporting this because the defect is worsening and poses a safety risk, and the vehicle appears to have the same failure pattern as recalled engines.

Not charging on Level 1, Level 2 chargers, only level 3. ICCU problem confirmed by dealer diagnostic even after recall software update was installed.

The contact owns a 2016 Kia Sedona. The contact stated that while attempting to park the vehicle, the brake pedal was depressed, and the gear shift lever was moved to Park(P) but failed to lock in place. The contact stated that the vehicle started to roll backwards. The contact used force to lock the gear shift lever in Park(P), and the vehicle came to a complete stop after several attempts. No warning lights were illuminated. The vehicle was taken to the dealer, where it was diagnosed with a faulty automatic transmission shift lever. The vehicle was not repaired due to the cost. The vehicle remained at the dealer unrepaired. Upon investigation, the contact related the failure to NHTSA Campaign Number: 22V612000 (Power Train); however, the VIN was not included. The manufacturer was not made aware of the failure. The failure mileage was approximately 110,000.

Vehicle parked for 48 hours (Sunday 23 Nov evening) under carport, no keys near it. When approached on 26 Nov 10am , it was found with dead battery. Nothing was on when it was parked.

The contact owns a 2012 Kia Sportage. The contact stated while attempting to open to the front driver's side door from the inside of the vehicle, the contact heard an unknown part inside the door fall, and the door required to be opened manually by pulling on the exterior door handle. A dealer was contacted. The vehicle was taken to the dealer, where it was inspected, and the contact was informed that the vehicle would not be repaired unless the manufacturer contacted the dealer. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 103,841.

The contact owns a 2024 Kia Sportage. While the contact’s daughter was driving approximately 70-75 MPH, the vehicle suddenly lost motive power. The driver was able to coast to the side of the road, where the vehicle was turned off for several minutes. The driver then activated the jump-start system of the hybrid vehicle. The driver was able to continue driving. The message "Hybrid Battery - Hybrid System Failure" was displayed. The vehicle was taken to an unknown dealer, where it was confirmed that the vehicle was included in a Voluntary Emissions Service Campaign: SC338; and the dealer completed the Service Campaign repair. No further information was available. The manufacturer was informed of the failure, and a case was filed. The failure mileage was 19,832.