Kia K5 fuel gauge problems

Filed Jul 30, 2026 · Fuel system, Seats · KY

On XXX, while traveling to [XXX], I experienced serious fuel system problems after filling my vehicle. The fuel gauge fluctuated from full to empty, and a loud pop caused the rear seat, where my two children were sitting, to lift upward. The vehicle would not accept more fuel despite the empty reading. I called AAA, but before the tow arrived, the gauge returned to normal, so I continued my trip. After returning to [XXX], I checked my Kia app and discovered active Recall SC356 describing a damaged check valve that could cause fuel tank expansion, rear seat lifting, and abnormal fuel gauge behavior—the same symptoms I experienced. On XXX, I brought the vehicle to The Kia Store in Louisville, advised them of the recall and my symptoms, and requested an inspection. Service Advisor Sidney Daub stated the issue was caused by a scratched muffler, not the recall, and no recall repair was performed. Relying on that assessment, I continued driving. From XXX, while traveling to [XXX], the same problems returned. Smoke came from the fuel tank area, fuel sprayed onto me when I opened the fuel door, and the vehicle became disabled and required towing home. I then took it to Kia Store East on June 10. There, [XXX] advised the failure was related to Recall SC356, and Haley informed me Kia Consumer Affairs would contact me. After weeks of communications, Kia advised on XXX that the vehicle was unrepairable and requested ownership documents. On XXX, Kia offered only to satisfy my loan balance through a buyback. I believe the dealership's failure to properly diagnose & repair the recall condition in April directly contributed to the later failure, safety hazards, towing expenses, and loss of my vehicle. I respectfully request that the federal safety agency investigate Kia's handling of Recall SC356 and the dealership's actions, & encourage Kia to consider a replacement vehicle, collateral swap, or another equitable resolution. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jul 27, 2026 · Fuel system · LA

As I was driving down the road, I began to hear a loud, forceful noise. I assumed it was something in my trunk rolling against the rear seats. The noise kept getting louder, and I pulled over, very frightened, as several warning lights came on, including the low fuel light and check engine light, and the fuel gauge needle was past “E.” Before the incident, the GPM reading was 400. After a while, I made it home, but the car started making loud noises and then died. That’s when I noticed my back seats were lifted. I called Kia customer service and had the car towed to the Kia dealership on Seigan Lane, where it is now. Something needs to be done about this.

Filed Jul 23, 2026 · Engine, Fuel system · 119,185 miles · MD

The contact owns a 2021 Kia K5. The contact stated that while driving approximately 55 MPH, the fuel gauge suddenly went from one-half tank to empty. The fuel level displayed 120 miles to empty. The contact attempted to refuel the vehicle but was unable to add fuel to the tank. The contact also stated that the oil warning light and the TPMS warning light was illuminated. The contact associated the failure with the federal safety agency Campaign Number: 25V794000 (Fuel System, Gasoline). The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 119,185.

Filed Jul 22, 2026 · Engine, Fuel system · 120,000 miles · FL

The contact owns a 2021 Kia K5. The contact stated that there were failures with the spark plugs. While driving at an undisclosed speed, the vehicle shuddered, and the engine sputtered. The contact stated that fuel spewed out of the filler neck while refueling the vehicle, and the fuel gauge incorrectly indicated that the fuel tank was empty after refueling. Additionally, there was an abnormal egg and sulfur odor coming from the vehicle with the check engine warning light intermittently illuminated. The contact stated that the vehicle was taken to a local dealer and inspected under the federal safety agency Campaign Number: 25V794000 (Fuel System, Gasoline). During the inspection, the seats were damaged. The vehicle was not repaired. The manufacturer was notified of the failure and was negotiating a buyback. The failure mileage was approximately 120,000.

Filed Jul 20, 2026 · Fuel system · 90,000 miles · IN

The contact owns a 2021 Kia K5. The contact received notification of the federal safety agency Campaign Number: 25V794000 (Fuel System, Gasoline); however, the part to do the recall repair was not yet available. The contact stated that while driving approximately 70 MPH, upon further inspection the fuel level was lowering unexpectedly. The check engine warning light was illuminated. The vehicle was taken to a local Auto Zone and was scanned with an OBD2 scanner and diagnosed with a recall-related failure. The vehicle was taken to a local dealer, where it was diagnosed with an expanded fuel tank; however, the vehicle was not repaired because the dealer was short-staffed. The dealer associated the failure with the federal safety agency Campaign Number: 25V794000 (Fuel System, Gasoline). The manufacturer was made aware of the failure; a case was filed; however, no assistance was provided. The failure mileage was approximately 90,000.

Filed Apr 22, 2026 · Fuel system · 60,000 miles · GA

The contact owns a 2023 Kia K5. The contact stated that after fully refueling the vehicle, the fuel gauge incorrectly indicated that the fuel tank was empty. The vehicle was taken to the dealer, where it was diagnosed, and the dealer associated the failure with the federal safety agency Campaign Number: 25V794000 (Fuel System, Gasoline); and the VIN was included in the recall. The vehicle was not yet repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 60,000.

Filed Feb 27, 2026 · Fuel system · 145,000 miles · FL

The contact owns a 2021 Kia K5. The contact stated that while driving 65-70 MPH, the fuel gauge displayed zero miles to empty. The contact pulled into the nearest gas station, and while attempting to add fuel to the vehicle, the contact became aware that there was fuel leaking out of the fuel tank outlet, and the gas pump nozzle was stopped. The contact was unable to refuel the vehicle. The contact stated that after returning to drive, the fuel gauge indicated 100 miles to empty. The vehicle was taken to the dealer for the recall repair under the federal safety agency Campaign Number: 25V794000 (Fuel System, Gasoline), and the dealer advised the contact that the manufacturer had instructed the contact not release the vehicle to the owner due to the recall. While diagnosing the vehicle, a technician at the dealer sent a photo displaying that the rear driver's side seat had melted internally due to the fuel tank overheating. Additionally, the dealer informed the contact that the SC288 Alpha Campaign had failed. The vehicle remained at the dealer for four months; however, the manufacturer later sent a letter advising the contact that the vehicle could not be repaired, and a buyback was suggested. The manufacturer offered to reimburse the down payment for the vehicle. The contact stated that the buy-back offer was unsatisfactory. The contact declined the offer, and the manufacturer then threatened to tow the unrepaired vehicle back to the residence. The contact stated that the manufacturer had failed to honor the recall repair. The vehicle was not repaired. The failure mileage was approximately 145,000.

Filed Dec 16, 2025 · Fuel system · 45,000 miles · FL

The contact owns a 2023 Kia K5. The contact stated that while driving at various speeds, there was an abnormal sound coming from the vehicle, the fuel level was lowering, and a fuel odor was entering the cabin of the vehicle. No warning light was illuminated. Upon further inspection, the contact became aware that fuel was leaking from the vehicle onto the ground. The contact received notification of the federal safety agency Campaign Number: 25V794000 (Fuel System, Gasoline); however, the part to do the recall repair was not yet available. Two local dealers were contacted: Boniface Hiers Kia (3890 W New Haven Ave, Melbourne, FL 32904). The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure. The failure mileage was approximately 45,000.

Filed Nov 5, 2025 · Fuel system · WI

The contact owns a 2021 Kia K5. The contact stated that fuel odor was entering the cabin of the vehicle. The contact stated that the rear passenger’s seat seemed to be inflated. While driving approximately 70 MPH, the contact became aware of fuel squirting out of the fuel filler neck. The fuel gauge fluctuated from full tank to half tank or empty. There was no warning light illuminated. The fuel odor became stronger, and the contact pulled over to the side of the road at a rest stop. A mobile service tech arrived to inspect the vehicle but found no failures. The contact continued driving to the residence. The vehicle was taken to the dealer, who found that the fuel tank and fuel line had failed and needed to be replaced. The dealer sent a photo to the manufacturer to confirm the necessary repair. The vehicle was not repaired. The manufacturer was informed of the failure and determined that the fuel tank and PCV valve were swollen and needed to be replaced. The manufacturer offered a buy-back for the vehicle and opened a case. The failure mileage was unknown.

Filed Aug 25, 2025 · Fuel system · 85,000 miles · GA

The contact owns a 2022 Kia K5. The contact stated that while driving at 43 MPH, the vehicle made an abnormally loud booming sound. The contact's daughter, who was occupying a rear seat, screamed out because the rear seats had suddenly risen. The contact pulled over to the side of the road and inspected the vehicle. The check engine and the low fuel warning lights were illuminated. The contact's wife met the contact and picked up the children. The contact stated that upon resuming driving, the vehicle was jerking violently, and the fuel gauge level lowered significantly. The vehicle was taken to an independent mechanic, where it was diagnosed with an EVAP system failure. The vehicle was driven to the residence. The vehicle was then towed to the dealer, where it was diagnosed, and determined that the fuel tank had expanded. The vehicle was not repaired. The manufacturer was notified of the failure and offered to repurchase the vehicle. The failure mileage was approximately 85,000.