2025 Kia Sorento Hybrid transmission problems

Filed Oct 31, 2026 · Engine, Fuel system · PA

October 27, 2026 while accelerating onto a major highway my hybrid SUV would not accelerate beyond 25-30 mph. Several trucks came up on me very quickly!! I pulled over and shut down the vehicle. I started it again and proceeded back on the highway, but still could not accelerate beyond 25-30. Once again, I felt I was at risk. I managed to get home (approx 3 miles) by driving at 30 mph with my 4 way flashers on. No check engine light came on, but I thought I heard a thumping or knocking under the hood. I had the vehicle towed to Fred Beans Kia Mechanicsburg, PA. They could not find anything wrong and are returning the vehicle as is. I have a complaint in with the service manager and am quite concerned.

Filed Oct 13, 2026 · Engine, Fuel system · IN

XXX - 9:35am EST: Lost acceleration power while driving on interstate, hybrid battery rapidly depleted forcing gas engine to engage at high RPMs in effort to maintain speed and charge hybrid battery. Decelerated from 65mph to roughly 40 mph within 1 mile of traveling distance, resulting in maneuvering of car over to right hand shoulder to park in the middle of [XXX] between [XXX] and [XXX]. Called [XXX] dispatch to request unit to park behind vehicle with emergency lights on to make other drivers aware while tow truck was called. While having the engine on and awaiting tow truck, vehicle dashboard displayed 'Check Hybrid System' warning message and began idling at lower RPMs than usual while gas engine was running. Vehicle towed XXX at 10:40am to local Kia dealership for serving, as vehicle was under full warranty. As of XXX, dealership has yet to conduct diagnostics, noting during drop off of keys that only (1) technician certified to work on BEVs and HEVs was employed full-time by the dealership service department. Dealership has yet to reach out for additional information, option of courtesy vehicle, or to offer assistance with submission of claim for rental car reimbursement to Kia Motors America. Fortunately, I was the only passenger in the car at the time. However, as a seasoned driver who has experienced other significant incidents while driving (e.g., failure of power booster for power steering and power brakes, tire blowout on interstate), navigating four lanes of 65mph+ traffic to safety park vehicle on heavily trafficked bridge was one of the more anxiety and stress inducing experiences to date. Contingent upon dealership service diagnostics and potential corrective service, I am incredibly hesitant (and may refuse) to drive the vehicle again at this point. Such a failure of the drivetrain is, unquestionably, a safety hazard warranting reporting to the federal safety agency for further review. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Sep 11, 2026 · Fuel system, Transmission · WA

While driving in a 55mph highway, I lost all accelerative power in my KIA Sorento Hybrid, driving my speed down to 25mph with vehicles behind me and no shoulder to pull onto. When I put my foot on the accelerator, the rmps on the dash would go all the way up 3000-4000 rpms, but there wasn't even a revving sound, and the car would not accelerate. Luckily I had just left my house was able to turn around and drive slowly home with my hazard lights on, the two miles back home. The first moment it happened the car behind me had to break, and luckily did so in time. From looking up the symptoms, it seems it may have been a malfunction with the HPCU. At no time did any diagnostic lights come on to alert of an issue. I shut the car off after returning home, tried to drive up my street, the same thing happened even when I tried to accelerate to 25mph. I am making an appointment to take it to a kia dealership.

Filed Aug 30, 2026 · Engine, Fuel system · IL

My 2025 Kia Sorento Hybrid SX-Prestige has repeated issues with the engine and drive train. On December 30th, 2025 it was diagnosed with a blocked breather hose sensor, causing the check engine light to come on. On July 1, 2026, the car rapidly decelerated while driving on the highway (limp mode), creating an unsafe condition, with an alert to charge the battery. The car also seemed to struggle getting up to speed, and shifted gears less smoothly, and at higher engine RPMs than it had previously. The deceleration behavior was confirmed by the Kia Technician. On July 21st, 2026, the car again rapidly decelerated while driving on the highway (limp mode), creating another unsafe condition, but no alert to charge the battery was received. This time the fuel rail pressure sensor was replaced. The car is now sitting in my driveway, completely dead. I drove it 2 days ago, and nothing appeared amiss. Yesterday morning, the doors would not unlock using either key fob, so I used the physical key to enter the car. It would not start. My husband measured the voltage from the battery terminal (inside the fuse box under the hood) to the bolt on the wheel strut at ~3 Volts. No settings were changed in the car and I verified the headlights remain in "Auto" mode. As it is Sunday, I will contact the Kia dealer tomorrow for directions. Due to the repetitive nature of issues with this car, I would like help from the federal safety agency to ensure this is promptly and permanently fixed.

Filed Jul 17, 2026 · Engine, Transmission · 16,386 miles · VA

The contact owns a 2025 Kia Sorento. The contact stated that while driving approximately 75 MPH, the vehicle lost automotive power and failed to exceed 30 MPH. The contact pulled over to the side of the road to avoid other vehicles. No warning lights were illuminated. The vehicle was towed to a dealer to be diagnosed; however, the cause of the failure was not yet determined. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 16,386.

Filed Jun 25, 2026 · Engine, Fuel system · MO

For an unknown reason when driving on the highway in heavy traffic the engine started to shake violently causing us to immediately pull over and when we opened the hood the engine was shaking violently. This was a dangerous situation because during this time the engine was not very responsive to input. No warning lights came on at all.

Filed Mar 17, 2026 · Engine, Fuel system · NJ

1/24/26 -- While driving ~25-30mph (~2 miles from start of trip) car produced “Engine Management System error” and within a minute or so “Check Hybrid System. Stop Safely” warning and went into electric only mode, limp mode. Turning off the car and turning back on temporarily enabled the gas engine to run. Dealer reviewed fault codes and stated vehicle was now running correctly. ~800 miles and less than 30days later the same problem occurred again. 2/17 – While driving ~30mph (~1mile from start of trip) the car produced a “Engine Management System error”. At this point I was approaching a traffic light and stopped at the red light. Decided to return home and attempted to turn right on red at the light. When I hit the gas to turn, the gas engine did not engage, the car limped forward a few feet in electric mode, and the car started beeping with the “Check Hybrid System. Stop Safely” warning. If I had less less space when turning right, or the car would have a moved a few feet farther, I would have been hit in the intersection by an oncoming car. Thankfully I had left a lot of space and my car did not pull that far into the intersection. I turned the car off, when I turned the car on again, the gas engine engaged, and I was able to slowly drive the 1 mile home. Car was then towed to the dealer 2/18 for repair. As of 3/17 dealer still has the vehicle (so do not have a second repair invoice) and waiting on an Customer Care escalation from KIA as dealer recalibrated the Hybrid module but can't recreate the issue after driving 400miles. This issue leaves the car in a limp mode with a significant chance of causing a accident, I was almost hit, when there is loss of ability to accelerate at any meaningful rate or drive any sustained distance.

Filed Mar 8, 2026 · Transmission · TX

While travelling in the center lane of the highway, the vehicle experienced a sudden loss of power and could not maintain speed. Vehicle could not go faster than approximately 20 miles per hour. Managed to exit highway off ramp by driving approximately 20 miles per hour as there was not a shoulder to exit the lane of traffic in that particular area. The hybrid battery voltage went very low. After exiting highway turned off vehicle and turned back on again, was able to drive normally to the dealership service center. Dealership found code history of fuel rail pressure sensor, cleared code and test drove and stated not able to duplicate concern at this time. 2025 Kia Sorento Hybrid mileage is 14250 miles

Filed Mar 2, 2026 · Acceleration, Engine · MA

The vehicle experiences a sudden and complete loss of power while driving. Specifically, the vehicle loses the ability to accelerate. During these incidents, the battery indicator shows critically low battery levels despite there being sufficient gasoline in the vehicle. The exact component causing the malfunction has not been identified by the dealership, as they report no diagnostic codes are present. The vehicle is available for inspection upon request. This issue has occurred multiple times while driving on highways at speeds where surrounding traffic is traveling approximately 55 mph or higher. This has also happened while pulling out into traffic, causing near misses of an accident. When the malfunction occurs, the vehicle rapidly loses acceleration capability and slows down to approximately 20 mph. This creates a dangerous speed differential between my vehicle and surrounding traffic. It becomes extremely difficult to safely maneuver into the breakdown lane due to the inability to accelerate. This situation creates a significant risk of rear-end collision or multi-vehicle accident. The dealership has been unable to reproduce the issue during service visits. However, the vehicle has been brought in multiple times for this same concern. The dealership has stated that no diagnostic trouble codes are stored, and therefore they cannot identify or repair the root cause. I have multiple videos documenting the issue occurring while driving. The vehicle has been inspected multiple times by the authorized Kia dealership service department. This issue has been occurring since July of 2025. Video Link: [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Feb 11, 2026 · Electrical, Transmission · WA

1. I'm not sure what component or system malfunctioned. The dealership has said something different every time it's had to be taken in. The first time they said it could have been the dip stick. The second time they said they didn't know but did an update to the car's system. Last week, was the third time we've had to take it in and they said they are doing an oil change and replacing the air intake hose assy, GDI fuel pump, High pressure fuel pump, valve cover assy, oil filter and oil but didn't say if this would fix the issue. 2. We have loss confidence in this car's safety and reliability and the dealership's ability to repair it. It's been in the shop multiple times and continues to fail. The issue with the vehicle is that when we got a warning the power to the car shuts off. It doesn't allow you to do anything with the gas pedal no matter what speed you are going. We have experienced this multiple times on city streets and the highway. The potential for an accident is very high when the car does this. 3. We have taken it to the dealership and they don't know what's wrong with it. I created a case with Kia and have not heard back from a case manager at all. 4. The vehicle has only been inspected by the dealership and no one else. They have contacted Kia corporate for solutions via messaging but this is the third time the car has just loss power while we are driving. 5. There were some warning signs like check hybrid batter system on the dashboard. The kia Access app allow shows diagnostic alerts like ADAS_DRV. I have attached some photos and some of the documentation we have. There have been multiple dates but I put the first date that the car broke down. Other dates include (1/28/26 and 2/6/26).