Transmission complaints by model year
| Year | Complaints | Share of year's complaints | Typical mileage |
|---|---|---|---|
| 2024 | 4 | 15% | 14,000 miles |
| 2023 | 8 | 12% | 36,000 miles |
| 2022 | 2 | 7% | 32,000 miles |
| 2021 | 7 | 10% | 36,000 miles |
| 2020 | 16 | 21% | 31,000 miles |
| 2019 | 48 | 32% | 5,000 miles |
| 2018 | 8 | 6% | 41,000 miles |
| 2017 | 12 | 4% | 2,000 miles |
| 2016 | 16 | 12% | 17,000 miles |
| 2015 | 17 | 7% | 75,000 miles |
| 2014 | 18 | 4% | 98,000 miles |
| 2013 | 10 | 5% | 61,000 miles |
| 2012 | 11 | 4% | 80,000 miles |
| 2011 | 18 | 12% | 56,000 miles |
| 2010 | 23 | 10% | 55,000 miles |
Which parts fail
Components named in complaints (automatic and manual transmissions, CVT, axles, driveshaft, 4WD/AWD).
Mileage when the problem started
What owners report
The contact owns a 2024 Kia Forte GT. The contact stated that while driving approximately 25 MPH on an off-ramp and making a right turn, the lane assist feature had malfunctioned, causing the vehicle to steer and crash into the guard rail. During the incident, the passenger side of the vehicle was damaged along with the guard rail. No injuries were reported. A police report was taken at the scene, and the vehicle was driven away. The vehicle was taken to the local dealer, who was unable to determine the cause of the failure. Previously, while driving, the vehicle had experienced transmission failures, causing the vehicle to jerk and shudder while attempting to accelerate. The RMPS failed to increase over 1.5 and failed to accelerate during normal mode however, in sports mode, the vehicle performed normally. The cause of the failure was not determined. …
On October 4, 2026, at approximately 27,870 miles, my 2024 Kia Forte GT-Line unexpectedly shut off while I was driving and making a right-hand turn into a parking lot. The vehicle was in Drive when the engine shut off. The instrument cluster continued to indicate "D" and displayed the message: "Engine Off! Shift to P or N, then start engine." The tachometer indicated 0 RPM, and the gas pedal was unresponsive. I photographed the instrument cluster immediately following the event. This was not the first occurrence of an abnormal shutdown. On two previous occasions, while backing up in a parking lot, the vehicle displayed a similar instruction requiring me to place the vehicle in Park and turn off/restart the vehicle. During those events, the vehicle would not operate normally until the ignition was completely cycled off and restarted. …
Unknown. During a basic collision Avoidance maneuver performed by myself on the highway at speed of aprox 60MPH the steering suddenly became non-responsive, resulting in my inability to maintain directional control and cause a collision. The vehicle continued traveling before coming to its final resting position. During this sequence, the driver-side front suspension assembly sustained a catastrophic separation before the impact The steering knuckle was no longer attached to the vehicle, the strut was broken, and the driver-side wheel/tire ultimately ended up underneath the vehicle when the vehicle finally come to a stop . During the event The driver-side axle shaft completely detached and somehow come out of the transaxle housing and was found a significant distance back along the roadway, a great distance back before the initial impact . …
The contact owns a 2023 Kia Forte. The contact stated while driving at an undisclosed speed, another vehicle was driving on the incorrect side of the road coming towards the contact head-on. While attempting to avoid crashing into the other vehicle, the contact swerved over to the side of the road and drove downhill. The contact then heard a loud thud, and the vehicle became undriveable. The vehicle was towed to a dealer where it was diagnosed and determined that the clutch assembly needed to be placed. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 36,000.
The contact owns a 2021 Kia Forte. The contact stated while driving 70 MPH, the vehicle started to decelerate while the RPM increased. The contact pulled over to the side and notice the vehicle smoking but there was no fire. There were no warning lights illuminated. The contact towed the vehicle to a local dealer, where it was diagnosed and determined that the transmission needed to be replaced. The vehicle was repaired however, the failure persisted. The manufacturer was informed of the failure. The failure mileage was 35,642.
The transmission went out while driving, entering the highway. It was intermittently missing a gear or slipping in about 2nd or 3rd gear. I first noticed it going about 40 mph and trying to accelerate to highway speeds. It was during a winter storm and other vehicles behind me had to brake unexpectedly. I wasn't sure if I felt for sure, so I continued to drive through many inclines and declines. The inclines became more difficult and the inability to maintain consistent speeds. I drove gently to the nearest Kia dealership which was in Salt Lake City about 60 miles away, where they informed me that I needed a new transmission. The car had about 75,000 miles on it and I bought it as a certified Pre-owned Kia with about 4,000 miles on it. The dealership plugged in the diagnostic code reader. But there were no codes detected. The service tech drove the car and felt the issue. …
The contact owns a 2020 Kia Forte. The contact stated that while driving at undisclosed speeds, the vehicle stalled. The vehicle failed to restart. The check engine warning light was illuminated. The vehicle was taken to the local dealer, where it was diagnosed that the engine needed to be replaced. The vehicle was not repaired. The vehicle was towed to the residence. An independent mechanic informed the contact that the battery needed to be replaced. The battery was replaced, and the contact was able to continue driving. The vehicle was taken to another independent mechanic, who stated the failure was due to the transmission pressure. The contact stated that there was an abnormal knocking noise after restarting the vehicle. The vehicle was towed to the local dealer but was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 31,000.
The contact leased a 2014 Kia Forte. The contact stated that while driving, the vehicle began to chug. The vehicle was towed to the local dealer, where it was diagnosed as needing a transmission replacement. The vehicle was repaired. The contact eventually purchased the vehicle. After the purchase, the failure recurred. While driving, the vehicle began to chug without warning. The vehicle was taken to the local dealer, where it was diagnosed that the transmission needed to be replaced. The vehicle was repaired. The manufacturer was called, but there was no response. The failure mileage was approximately 200,000.
Related recalls (2)
Power train › Axle assembly › Axle shaft
Kia Motors America (Kia) is recalling certain 2019 Forte vehicles. The left front axle driveshaft may not have been heat-treated, which can cause it to break.
Remedy: Kia will notify owners, and dealers will inspect the left front axle driveshaft for a heat treatment verification code, and replace it if the code is missing, free of charge. The recall began September 2, 2020.
Power train › Automatic transmission › Cooling unit and lines
Kia Motors America (Kia) is recalling certain model year 2011 Forte vehicles manufactured August 27, 2010, to November 11, 2010. The affected vehicles have a transmission fluid cooler hose that may have been improperly manufactured, resulting in a transmission fluid leak.
Remedy: Kia will notify owners, and dealers will replace the transmission cooler hose, free of charge. The recall began March 30, 2016. Owners may contact Kia customer service at 1-800-333-4542.
Frequently asked questions
Which Kia Forte years have transmission problems?
By NHTSA complaints, the 2019 (48), 2010 (23), 2011 (18), 2014 (18) and 2015 (17) model years. Transmission complaints make up 32% of all complaints for the 2019.
Is there a recall for Kia Forte transmission problems?
Yes — 2 recalls, including 20V-459 (axle shaft, Aug 5, 2020); 16V-070 (cooling unit and lines, Feb 5, 2016). Recall repairs are free at authorized dealers; check a specific car with the VIN recall check.
At what mileage do Kia Forte transmission problems start?
Across all years, half of the complaints with a recorded mileage happened before about 45,000 miles; 58% happened before 50,000 miles.
What part fails most often?
Owners most often name the automatic transmission (5 mentions), followed by the automatic transmission › lever and linkage › column shift (1).
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.