Kia Seltos loss of power problems

Filed Sep 28, 2026 · Electrical, Engine · ID

the federal safety agency SAFETY COMPLAINT Vehicle: 2021 Kia Seltos VIN: [XXX] Date: December 16, 2025 Complainant: [XXX] I am filing this formal safety complaint regarding serious and recurring engine problems with our 2021 Kia Seltos, VIN [XXX]. We have attempted repeatedly to resolve these concerns through Lithia Kia in Nampa, Idaho, as well as through Kia corporate, but our concerns have not been adequately addressed. Over approximately the past year, the vehicle’s engine has unexpectedly seized or shut down four separate times while the vehicle was being driven. Each incident created a serious safety hazard because the vehicle suddenly lost power. Fortunately, on these occasions, the failures occurred while we were traveling in slower traffic and we were able to maneuver the vehicle safely onto the shoulder. We are extremely concerned that a future occurrence could happen at higher speeds or in heavier traffic, potentially resulting in a serious crash or injury. Following each incident, the vehicle had to be towed. On two occasions, it was towed to an independent mechanic, and on two occasions it was towed directly to the Kia dealership. The independent mechanic diagnosed the vehicle as burning excessive amounts of engine oil. The loss of oil has occurred even within approximately 1,000 miles of an oil change when the engine had been properly topped off. We were informed that the excessive oil consumption was associated with the vehicle's safety systems shutting the engine down. Despite repeatedly reporting this dangerous condition to Lithia Kia, we do not believe the dealership has adequately investigated or corrected the underlying problem. On multiple occasions, the dealership performed relatively minor repairs, but those repairs did not resolve the problem. After the vehicle was returned to us, the same serious condition recurred. We repeatedly communicated to the dealership our extreme concern that this vehicle is unsafe to operate because the INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C

Filed Sep 16, 2026 · Engine, Transmission · OH

Exhaust starting putting out white smoke and loss of power on accelerator while speeding up. Normally when merging onto highway or taking off after stop. Assumed head gasket with coolant in oil. Took to get oil change, milky/sludgy oil to back up that thought. No coolant in reservoir. Took to dealership, they claim lack of maintenance despite all maintenance records. They will not report records to kia corporate leading to denied warranty. Will not provide testing results. Claimed piston rings were destroyed. Would not give explanation for loss of coolant. Will not speed up going onto highway and continues to put out white smoke. No lights on vehicle.

Filed Sep 1, 2026 · Transmission · CO

The contact owns a 2021 Kia Seltos. The contact became aware several years ago that the transmission was not shifting properly and the vehicle was shaking abnormally. The vehicle was taken to a dealer; however, the technicians found no failure. The contact stated that on another occasion while in traffic, the engine overheated. The vehicle was taken back to the dealer, where it was diagnosed and determined that the transmission needed to be replaced. The vehicle was repaired; however, the brakes locked up while the vehicle was on a hill, forcing the contact to steer to the side of the road and turn the vehicle off. The vehicle was restarted and driven back to the residence, but the following day the vehicle stalled. The manufacturer was notified of the failures and requested that the contact return the vehicle to the dealer. The vehicle was returned to the dealer to be diagnosed. The contact was informed that the transmission needed to be replaced. The contact stated that the transmission was replaced 3 times within 3 years. The contact was informed by the service manager that the dual clutch was not ideal for driving in the mountains. The contact stated that during the first failure, there were several unknown warning lights illuminated with audible alerts to exit the vehicle. The manufacturer was notified of the failure. The dealer confirmed the transmission failure. The vehicle was not repaired. The failure continued with reduced power.

Filed Sep 1, 2026 · Engine · MI

My 2021 Kia Seltos 2.0L is experiencing excessive engine oil consumption between regularly scheduled oil changes. There is no visible external oil leak or oil accumulating underneath the vehicle, but the oil level becomes extremely low before the next scheduled oil change, requiring me to add oil myself. I am concerned that continued excessive oil consumption could result in inadequate engine lubrication, engine damage, engine seizure/stalling, or loss of power while driving. I took the vehicle to an authorized Kia dealership on September 1, 2026 and reported the excessive oil consumption. The dealership did not inspect the vehicle, perform diagnostic testing, or provide a repair order. I was told that because the vehicle has approximately 138,000 miles and is outside the warranty period, there was nothing the dealership or Kia would do and that diagnosis could be expensive. I subsequently contacted Kia Consumer Assistance. Kia confirmed that safety recall SC209 was completed on this vehicle in 2021. Kia advised that this vehicle is not currently included in SC336/the federal safety agency 25V099. Kia has opened a dealer complaint and advised that the matter will be brought to the attention of a District Manager. I am concerned because Kia has identified piston oil-ring-related problems involving increased oil consumption in certain Kia Seltos vehicles. Although my vehicle has not yet been diagnosed and Kia states that it is not included in SC336, I am reporting the excessive oil consumption and potential resulting engine failure as a safety concern. The vehicle is available for inspection.

Filed Aug 31, 2026 · Engine, Fuel system · WI

My 2021 Kia Seltos SX Turbo (1.6L Turbo engine) is experiencing severe, excessive oil consumption, burning (and heavy smoke ) approximately 1 to 2 quarts, (Kia dealer oil change standard amount) of oil every 1,000 miles without any external visual leaks. A formal diagnosis by a certified Kia dealership confirms that heavy carbon buildup has accumulated around the piston rings, causing severe ring distortion. Because the oil rings are stuck and distorted, the engine is bypassing oil directly into the combustion chamber and burning it. This exact physical failure mode—carbon buildup causing piston oil ring failure—is identical to the defect described in the federal safety agency Recall 25V099 (Kia Campaign SC336) for the 2.0L Seltos models. However, my vehicle is currently excluded from safety remedies due to its 1.6L Turbo engine variant. This vehicle presents a severe safety hazard, including sudden engine knocking, very heavy smoke from the exhaust, power loss, stalling at highway speeds, or potential engine fire due to running dry on oil. Regulators must expand the scope of the piston ring investigation to include the 1.6L Turbo engine footprint. There were no engine lights, oil lights, or any warning codes. I was told by Kia repair service department that although the car was smoking heavy and smelled like it was burning that I should continue to drive it and then I wasn’t in danger. Please help

Filed Aug 20, 2026 · Engine · 103,000 miles · IN

I am requesting a formal review of an engine failure involving my 2021 Kia Seltos LX with the 2.0L engine. At approximately 103,000 miles, the original engine failed after losing nearly all of its oil. There was no obvious external oil leak or oil puddle, suggesting that the engine may have been consuming oil internally. Earlier in my ownership, the vehicle also unexpectedly shut off while operating. I paid out of pocket for a replacement engine and installation. Within approximately one to two hours of receiving the vehicle back, the check-engine light began flashing. The diagnostic information reportedly indicated piston noise, even though the replacement engine appeared to run smoothly. These circumstances appear similar to the piston-ring condition described in safety recall SC336/the federal safety agency 25V‑099, including excessive oil consumption, cylinder damage, abnormal piston noise, engine failure, and possible loss of power. However, Kia’s online system currently shows that SC336 is not open for my VIN, and the dealer found no record that the recall had previously been completed. I understand that my VIN may not currently be included, but I am asking Kia to investigate whether my original engine experienced the same defect, confirm in writing why my VIN was excluded, and review my case for reimbursement or goodwill assistance. The failure occurred only about 3,000 miles beyond the 100,000-mile powertrain warranty, and I have already incurred substantial engine and labor expenses. Please open a formal case, review my vehicle’s production and engine records, and provide a written determination. I can supply the VIN, repair invoices, proof of payment, mileage records, maintenance documentation, diagnostic codes, towing records, and replacement-engine information.

Filed Jul 19, 2026 · Driver assistance · WI

KiA started a system update while I was driving on a busy road which caused complete loss of engine power and all electrical. This is nuts. What if you’re on the highway driving 70 mph and this happens?

Filed Jun 27, 2026 · Electrical, Engine · CO

My 2022 Kia Seltos is equipped with Idle Stop & Go (ISG), which shuts the engine off when stopped and restarts it when the driver releases the brake/presses the accelerator. ISG stopped functioning about a year ago (the engine stayed running at stops). I didn't think anything of it because the ISG had worked sporadically from the day I bought the car. (I purchased it new.) It began working again, sporadically, about a week ago. Since then, on 3 occasions, when stopped at a red light with the engine auto-shut-off via ISG, pressing the accelerator to proceed causes the engine to fail to restart as I accelerate, and the vehicle stalls. The dashboard displays a "Press Ignition Button" message. I lose power to the engine, and the vehicle stops accelerating, coasting briefly on momentum until I manually restart it via the ignition button. I have not confirmed whether warning lights were illuminated, as my focus was on regaining control. This appears consistent with documented ISG restart failures reported by other Kia owners online, suggesting a possible pattern rather than an isolated defect. I checked my VIN on zero open recalls. Kia customer care was closed when I called (today is a weekend day). I plan to call on Monday for a diagnostic appointment. This is a safety concern because the stall occurs unpredictably at the exact moment of accelerating from a stop, particularly hazardous at intersections in traffic.

Filed Jun 26, 2026 · Electrical · PA

To the federal safety agency, I am writing to formally submit a safety complaint regarding my 2023 Kia Seltos, which exhibits a recurring, dangerous defect involving the engine stalling without warning. This defect results in a total loss of power while the vehicle is in operation or attempting to accelerate, posing a critical safety risk. The failure manifests in two primary scenarios: * **Remote Start Failure:** The vehicle frequently stalls immediately after utilizing the remote start feature when shifting into drive. * **Auto Start/Stop Instability:** The Auto Start/Stop system contributes to the engine shutting down unexpectedly when lifting off the brake or attempting to accelerate from a stop. When this occurs, the dashboard illuminates multiple warning lights (e.g., battery, oil, "key not in vehicle"), and the vehicle loses all forward propulsion. On inclines, this defect causes the vehicle to roll backward, forcing the driver to rely solely on emergency braking to prevent a collision. ### Evidence of Widespread Concern My research indicates this is not an isolated incident; numerous Kia owners report identical, dangerous symptoms: * Drivers across various models report the engine shutting down and the vehicle rolling backward on hills, requiring a full power cycle to resume operation. * Some owners report losing all ability to accelerate at traffic lights, accompanied by critical dashboard warnings. * Others report the vehicle shutting off on its own while driving or refusing to start despite the dashboard indicating it is running. I have attached evidence documenting these experiences: **image.png**, **image_2.png**, **image_3.png**, **image_4.png**, and **image_5.png**. Given the frequency of these reports, I urge the federal safety agency to launch a formal investigation into this apparent software or engineering failure. Sincerely, [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jun 11, 2026 · Engine, Fuel system · IL

Since November 2025, this vehicle has experienced repeated loss of power, severe shaking during acceleration, jerking between gear shifts, abnormal humming/grinding noises, and multiple check engine light events. The condition is most noticeable between approximately 40-70 mph and has repeatedly occurred while driving on highways. On multiple occasions, the vehicle struggled to accelerate properly and would not respond normally to throttle input. During one occurrence, the vehicle had difficulty accelerating beyond approximately 55 mph while on the expressway. The shaking became severe enough that I feared mechanical failure could occur while driving. I was forced to pull off to the shoulder of the highway because I no longer felt it was safe. The inability to maintain speed and accelerate normally created a safety risk for both myself and surrounding traffic. The vehicle has been returned to the dealership six times for the same recurring issue. Repairs have included replacement of the ECU, catalytic converter, ignition components, fuel injectors, and other engine related components. Despite these repairs, the problem continues to return. The condition has been repoduced and documented by the dealership, and a manufacturer field technician was involved in the most recent diagnosis process. Most recently, after the vehicle was inspected and believed to be repaired, the check engine light illuminated again while the service manager was moving my vehicle to be washed inside of their garage, as I waited (today, June 11th 2026). The recurring loss of power, repeated check engine light events, and inability to permanently correct the defect raise significant safety concerns while operating the vehicle. I have all documentation in my notes, as well as the dealership repair documents.