Kia Forte knocking problems

Filed Sep 30, 2026 · Engine · WA

Vehicle has developed a severe knocking during acceleration, that stops during deceleration, and returns when in idle. I'm sure it is poison slap. I know there is an extension warranty, but the dealer says my car doesn't qualify. Then the federal safety agency has the SC200 safety recall. I need help with this car. My engine is failing. Can you help me?

Filed Sep 24, 2026 · Steering · 53,280 miles · AZ

The contact owns a 2014 Kia Forte. The contact stated that while driving at 35 MPH, the steering wheel became difficult to operate. The contact stated that the steering wheel would knock from left to right and would unexpectedly seize. Due to the failure, the steering became difficult to control. The vehicle was taken to a service center, where the failure was confirmed to be related to the steering system. The contact was advised not to drive the vehicle. The vehicle was towed to the dealer, where it was diagnosed that the steering wheel flex coupling had failed and needed to be repaired. The vehicle was repaired by the dealer. The manufacturer was made aware of the failure via telephone, and a case was opened. The failure mileage was approximately 53,280.

Filed Sep 22, 2026 · Airbags, Electrical · TX

Airbag warning light has came on had a mechanic run codes and it says all air bags unresponsive. Now my car is refusing to start. If continue to try it eventually starts. Major oil leak and consumption along with knocking. Along with my break lights not working occasionally along with my head lights and brights not working at all

Filed Jul 24, 2026 · Engine · 49,000 miles · KS

The contact owns a 2023 Kia Forte. The contact stated that while driving at an undisclosed speed, the vehicle made abnormal knocking sounds. No warning light was illuminated. The vehicle later lost motive power while driving with the check engine warning light illuminated. The vehicle was towed to the dealer, and it was determined that the engine needed to be replaced; however, the vehicle was not covered under warranty. The vehicle was not repaired. The contact stated that a week prior to the failure, the vehicle was taken to another dealer to determine the trade-in value, and no failures were found at the time. The manufacturer was made aware of the failure. The failure mileage was approximately 49,000.

Filed Jul 6, 2026 · Engine · IN

respectfully submit this correspondence to request formal assistance regarding my 2015 Kia Forte EX, a vehicle covered under the class settlement. The vehicle is exhibiting severe symptoms consistent with KSDS‑related engine failure, yet the required diagnostic protocol has not been completed by the servicing dealership. The KSDS software update was performed in May 2022, and the vehicle currently has only 92,000 miles on the odometer, placing it well within the settlement’s mileage parameters. Despite this, the dealership has failed to follow KSDS procedures and has not produced any written documentation of its findings. All communication with the dealership has occurred exclusively by telephone. Despite repeated attempts to obtain information, I have not received a diagnostic sheet, video recording, code report, KSDS documentation, or any written summary of the vehicle’s condition. All statements provided to me have been verbal and inconsistent. My **primary symptoms** include: - Persistent and worsening **engine ticking** - **Burning excessive amounts of oil** - Activation of **limp mode** - A **flashing check engine light** These symptoms align with known indicators of KSDS‑related engine failure and warrant immediate and proper diagnostic evaluation under the settlement terms. The dealership has verbally stated that the issue may be related to **spark plugs and ignition coils**. However, plugs and coils are a **well‑documented secondary symptom** of rod bearing failure, caused by oil contamination and misfires resulting from internal engine damage. This further supports the likelihood of KSDS‑related engine failure. Kia corporate has not referenced documentation of any kind. They have not requested it, indicated they are awaiting it, or provided guidance regarding its submission. Instead, corporate has repeatedly stated that they “must defer to the dealership,” despite the dealership’s failure to perform or submit the required KSDS diagnostic materials.

Filed Jul 1, 2026 · Electrical, Engine · OK

Unknown it makes a ticking noise check engine light came on and oil isn't low. Recently bought it.

Filed May 26, 2026 · Engine · AR

This Forte was not neglected and it was not abused. Nearly 90% of its miles came from highway commuting and interstate travel. It was completely stock, never modified, never driven hard. More importantly, it received fully synthetic oil changes every 3k-4k miles since new, well ahead of what Kia or the oil manufacturer even recommends, because I intended to keep this car long term. All of that is verifiable through Carfax. The engine failure came without meaningful warning. While driving, I noticed an unusual noise and pulled over as quickly as safely possible. I checked the dash expecting some kind of indicator and found nothing. No check engine light, no oil pressure warning. A nearby mechanic found the engine more than 2.5 quarts low on oil despite the vehicle being only about 3,300 miles into a fresh synthetic oil change. There were no external leaks. No oil spots at home, none at work. Nothing to explain where that oil went. After topping it off, the noise briefly stopped. With no warning lights on and the noise stopped, I thought we had caught it in time. I even felt confident enough to also have the mechanic change the transmission fluid as it was about due again. However, a few miles later, the engine suffered complete failure. Violent shaking, severe knock, then the check engine light came on. I shut it down immediately and pushed it home. Once home, I checked the oil again and found it had unusually darkened in an extremely short period of time. The vehicle has not been driven since and is currently inoperable. What troubles me most, beyond the financial loss, is that this vehicle gave me no real opportunity to save it. The oil pressure warning light never illuminated. More than two quarts of oil vanished within a single service interval with no external source and no indication whatsoever, even with checking the level periodically. I went above and beyond in maintaining this vehicle and still lost the engine. This could have been a catastrophe on the road

Filed May 8, 2026 · Engine · IN

While driving, the vehicle suddenly began knocking severely, smoking, leaking oil, and then shut off unexpectedly without adequate warning. This created a serious safety hazard and near fire risk. The engine assembly failed catastrophically. Dealership inspection documented: connecting rod punctured engine block bearing material found in oil pan broken piston components in oil pan oil leakage underneath engine complete engine seizure/failure The dealership confirmed and documented the failure and replaced the engine assembly. Repair records and failed components should still be available for inspection through the dealership. My safety and the safety of others were placed at risk because the vehicle suddenly lost power while driving. Oil leaked from the damaged engine and the engine compartment began smoking. The engine could have caught fire or caused an accident due to sudden loss of power. There were no adequate warning indicators before failure. No meaningful oil-pressure or low-oil warning appeared until the vehicle was already smoking and severely damaged. This failure closely mirrors known Kia engine defect investigations and Recall Campaign SC209 / the federal safety agency Recall 21V259000 involving: connecting rod bearing damage piston oil ring defects excessive oil consumption engine seizure engine stall fire risk Although my VIN is not currently included in the recall population, the documented failure symptoms are substantially similar. I also report that another Kia vehicle in my household, a 2017 Kia Sorento, experienced a separate rod-bearing-related engine seizure despite proper maintenance and documented oil changes. The connecting rod blew a hole through the engine block, causing oil leakage and heavy smoke while driving. The vehicle could have caught fire or exploded, placing my life and others at serious risk due to sudden engine failure without adequate warning. Engine replaced under warranty; concerned for safety after 2 similar Kia failures.

Filed Apr 18, 2026 · Engine · NC

To Whom It May Concern, I am submitting a formal complaint regarding a serious safety issue involving my 2021 Kia Forte. Approximately one year ago, I purchased this vehicle used with approximately 56,000 miles. I have owned the vehicle for nearly a year without prior incident until a recent and significant failure occurred. While driving on a highway after work, the vehicle suddenly lost engine power. The RPMs dropped abruptly, and the vehicle began decelerating rapidly before completely shutting off. This occurred without any prior warning indicators, such as dashboard warning lights or messages. I attempted to restart the engine three times before it successfully turned over. Upon restarting, the engine produced a loud knocking noise that had not been present before. Since this incident, the vehicle has been unable to operate reliably. It will start and run briefly but stalls again after a short distance. The knocking noise persists, suggesting a serious internal engine issue. The vehicle remains in my possession and is available for inspection. Component/System Involved: The failure appears to involve the engine and/or internal engine components. The exact cause has not yet been diagnosed by a professional. Safety Risk: This failure posed a significant safety hazard, as the sudden loss of power occurred while traveling on a highway. This could have resulted in a serious accident, particularly if surrounding traffic had been heavier or less responsive. Inspection and Diagnosis: The issue has not yet been formally diagnosed or confirmed by a dealership or independent repair facility. Additionally, the vehicle has not been inspected by the manufacturer, law enforcement, insurance representatives, or other entities. Warning Indicators: There were no warning lights, messages, or other indicators prior to or during the initial failure. The only symptom Sincerely, [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Apr 16, 2026 · Engine · 142,000 miles · AL

The contact owns a 2012 Kia Forte. The contact stated that upon starting the vehicle, the vehicle made an abnormal knocking sound, and there was a burning oil odor coming from the vehicle. The check engine warning light was illuminated. The contact related the failure to the federal safety agency Campaign Number: 20V750000 (ENGINE); however, the contact was unable to schedule an appointment because the dealer was unreachable. The manufacturer was not contacted. The failure mileage was approximately 142,000.