2021 Kia Sorento: transmission slipping

Filed Aug 25, 2026 · Transmission · FL

Vehicle: 2021 Kia SorentoCurrent Mileage: Over 100,000 miles (Original Owner) Description of Safety Defect & Failed Recall Remedy: Background: This vehicle is equipped with the 8-speed Dual-Clutch Transmission (DCT) and has suffered from severe slipping, jerking, and hesitation since delivery (at 5 miles). In 2023, the vehicle received the software update remedy under Kia Safety Recall SC250 (the federal safety agency Campaign 22V760) for the defective electric oil pump circuit board. The Failure: The 2023 software patch failed to resolve the underlying physical safety defect. An independent technician recently diagnosed the vehicle and confirmed a permanent, un-clearable fault code for a completely failed electric transmission oil pump—the exact physical component failure targeted by safety recall SC250. This defect causes an immediate risk of a sudden loss of motive power. The Dealership Violation: The vehicle was dropped off at Greenway Kia West Orlando on Monday, August 17, 2026. The dealership held the car for over a week, logging it under a separate fuel pump recall to stall. On August 25, 2026, the dealership formally denied safety recall coverage and issued a $7,000 out-of-pocket quote to replace the transmission, claiming the vehicle is no longer covered because it is past the 100,000-mile powertrain warranty. Federal Mandate Violation: Under federal law, safety recalls do not have mileage caps. The manufacturer's remedy failed to permanently correct a documented safety hazard, and the dealership is actively attempting to shift a multi-thousand-dollar safety recall replacement cost onto the consumer.

Filed Jul 21, 2026 · Engine, Transmission · NY

I am filing this complaint regarding my 2021 Kia Sorento, which has suffered a transmission failure. The transmission slips, shifts harshly, hesitates during acceleration, loses power unexpectedly, and has become unsafe to drive. This defect has put my safety and the safety of others at risk. On several occasions the vehicle failed to respond properly when accelerating, including while entering highways and driving in traffic. The hesitation and sudden loss of power created fear and anxiety because I could not trust the vehicle to operate as expected. The problem has been reproduced and confirmed by a repair facility, and the symptoms are consistent with a transmission torque converter clutch failure. I also contacted Kia and provided the vehicle information. Kia informed me that they would not repair the vehicle because it has exceeded 100,000 miles and that the recall or warranty extension had expired. However, my vehicle is experiencing the same transmission-related symptoms reported by many other Kia owners.I never received any recall notification because I purchased the vehicle from a dealership as the second owner. Had I been properly notified, I would have taken the vehicle in for inspection much earlier or would never have purchased the dangerous vehicle in the first place. It is extremely frustrating and costly to be denied assistance solely because of mileage when the failure appears to be related to a known transmission defect.Before the failure, the check engine light illuminated and then went away even though the issue did not. Prior to that warning, the vehicle had already shown delayed shifting, slipping, hesitation, rough gear changes, and loss of power, which became progressively worse. I reported this to Kia on a previous service visit to Romeo Kia in Lake Katrine, NY and was told they did not find anything wrong. This situation has caused significant emotional stress and anxiety. I am requesting a full review and a fair resolution from kia. Thank

Filed Jul 16, 2026 · Electrical, Engine · MA

I am filing this complaint regarding my 2021 Kia Sorento, which has suffered a serious transmission failure. The vehicle is displaying diagnostic code P0741, indicating a torque converter clutch malfunction. The transmission slips, shifts harshly, hesitates during acceleration, loses power unexpectedly, and has become unsafe to drive. The vehicle is available for inspection upon request.This defect has put my safety and the safety of others at risk. On several occasions the vehicle failed to respond properly when accelerating, including while entering highways and driving in traffic. The hesitation and sudden loss of power created fear and anxiety because I could not trust the vehicle to move when needed to avoid a dangerous situation. The problem has been reproduced and confirmed by a repair facility, and the symptoms are consistent with a transmission torque converter clutch failure. I also contacted Kia and provided the vehicle information. Kia informed me that they would not repair the vehicle because it has exceeded 100,000 miles and that the recall or warranty extension had expired. However, my vehicle is experiencing the same transmission-related symptoms reported by many other Kia owners.I never received any recall notification because I purchased the vehicle from a dealership as the second owner. Had I been properly notified, I would have taken the vehicle in for inspection much earlier. It is extremely frustrating and financially devastating to be denied assistance solely because of mileage when the failure appears to be related to a known transmission defect.Before the failure, the check engine light illuminated and code P0741 appeared. Prior to that warning, the vehicle had already shown delayed shifting, slipping, hesitation, rough gear changes, and loss of power, which became progressively worse.This situation has caused significant emotional stress, anxiety, and financial hardship. I am requesting a full investigation and a fair resolution from kia.

Filed May 8, 2025 · Transmission · PA

I had purchased my vehicle in January of 2024. At the time the car drove great. Fast forward a few months later and that’s when the issues started happening. I would go to accelerate the vehicle and it’s like the car didn’t want to go anywhere. I would have the pedal down to the floor and it wasn’t moving. At first when it happened it was sporadicly, and I thought ok it’s a new car maybe that’s just how it drives. But then when I was pressing the gas pedal the engine would revv up but then continue to rev even when the car was moving, like it wasn’t catching the gear. So I had enough of just thinking it’s the car and I had my own mechanic look at it and he mentioned CVT transmission slipping. So being still under warranty I took it into Kia this past December and explained the loss of acceleration, it eating gas, and how I truly do not feel safe. Well of course I was told there is nothing wrong with it, and that it learned my driving habits and that I possible keep hitting the shifter in manual. I had videos of the rpms revving up and the car not moving, and they didn’t want to see my videos. I was just a few thousands miles from my 60,000 mile second owner warranty and not sure if that’s why I was told there was nothing wrong with is. This vehicle is truly a hazard as it does not move on acceleration on the highway and feel like I will get into an accident because of it one day. Kia really needs to address the issue before something really bad happens to someone. I apologize but it will not allow me to upload videos of the issues before and after going to Kia and how there is still an issue.

Filed Mar 24, 2025 · Engine, Transmission · 30,000 miles · NM

The contact owns a 2021 Kia Sorento. The contact stated that intermittently, the transmission was slipping. Additionally, the vehicle failed to go into Standard Mode. While driving, the vehicle lost motive power while driving at 15 MPH. The check engine warning light was illuminated. There was an “S” symbol displayed. The vehicle was taken to the local dealer, where it was diagnosed and determined that the system needed to be reset. The vehicle was repaired, but the failure recurred. The vehicle was taken back to the local dealer, where it was diagnosed that the sensor or wheel speed sensor needed to be replaced. The vehicle was not repaired. The manufacturer was contacted. The failure mileage was approximately 30,000.

Filed Sep 26, 2023 · Engine, Transmission · TN

My 2021 Sorento randomly gets stuck in between gears, slipping into neutral and rev'ing up to 4000-5000 rpms. This is at lower speed usually within a mile or so of leaving my house. It's very frightening and has happened to me dozens of times, but I live in a rural area over an hour from a Kia dealership, and they do not offer loaners. This issue first arose for me after the transmission oil pump recall was already addressed. I am the 2d owner, and suspect this could be why the previous owners sold the car, which I bought through Autotrader from the Heiser dealership in Wisconsin. After the latest episode, I finally arranged alternate transportation and took it in to the Serra Kia dealership in Jackson, TN. They have had it over a week and not been able to replicate the issue so far. No computer codes show up on it either. They say there's no technical advisory on the issue, and have no idea what's going on with the transmission. Serra Kia is saying that Kia corporate will not approve replacing the transmission without an error code. From reviewing other owner reviews in Kia forums, the Kia 2021 Sorento slipping into neutral while driving appears to be an issue for others as well. It is dangerous, as I could be rear-ended. Quite honestly, it’s terrifying, and I am afraid to drive the car again without this issue being addressed.

Filed Jul 10, 2022 · Transmission · GA

Transmission started slipping after 25,000 miles, very scary in traffic. Got home and transmission completely failed.

Filed Nov 16, 2021 · Transmission · NC

The vehicle has a dual clutch transmission which causes the vehicle to lunge forward at idle. The transmission also "slips" at times during hard acceleration and results in very slow acceleration when entering a highway on a ramp or making way across an intersection. The transmission also shifts extremely hard when coming to a stop and then lunges requiring additional braking. This presents a safety issue when crossing an intersection or coming to a sudden stop in stop and go traffic. The vehicle has 10,000 miles was inspected (and reproduced) at the Kia dealership where I purchased it, and the service department states that the transmission is working as designed, which I believe since there are numerous complaints about the same issue on line and Kia forums. The newest issue (about 2 months old) is that there is a whining noise that appears to be coming from the transmission during acceleration until the transmission shifts into another gear. There are no warning lamps - the issue has been occurring since purchased in May 2021. It appears that this issue is with the dual clutch 2.5 turbo models across the Kia line.