Which parts fail
Components named in complaints (automatic and manual transmissions, CVT, axles, driveshaft, 4WD/AWD).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2019 Kia Forte owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2019 Kia Forte. The contact stated that while driving at 70-75 MPH, the vehicle lost motive power and the check engine warning light illuminated, causing the contact and her daughter to be stranded on the highway. The vehicle was towed to an independent mechanic, who replaced the spark plugs and ignition coils; however, the failure persisted. After allowing the vehicle to cool down, the contact restarted the vehicle and drove to the residence. The vehicle was then taken to Jiffy Lube, where the transmission fluid was changed; however, the failure recurred. The vehicle was towed to the dealer, where DTC P0730 was retrieved, indicating an Incorrect Gear Ratio, and the dealer determined that the transmission needed to be replaced. …
The contact owns a 2019 Kia Forte. The contact stated while driving at various speeds, the vehicle stalled without warning while depressing the accelerator. The contact then received notification of NHTSA Campaign Number: 20V459000 (Power Train) which was linked to the failure. Upon taking the vehicle to a dealer, the mechanic was initially unable to repair the recall due to the part not being available. The vehicle remained in the possession of the dealer for nearly a month and immediately upon return of the vehicle, the failure persisted. The contact had taken the vehicle back to the dealer where and was informed that no fault was found with the vehicle. The contact stated that the failure had worsened, and the vehicle failed to start up after multiple attempts. The manufacturer was notified of the failure and a complaint was filed. The vehicle was not repaired. …
The contact owns a 2019 Kia Forte. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to the dealer, where it was diagnosed with transmission failure. The contact was informed that the transmission needed to be replaced. The vehicle was not repaired. The contact had previously received an unknown recall notification regarding the transmission. The transmission was not replaced; however, the transmission control module software was updated in January 2021. The contact stated that the failure had recurred. The manufacturer was not made aware of the failure. The failure mileage was approximately 44,959.
The transmission failed while on the interstate/freeway while trying to merge into traffic. The vehicle lost power and would not accelerate even though the engine was revving up in RPMs. The vehicle is available. The transmission was replaced with a "Refurbished Transmission" through Warranty by KIA. Two days later the car began jerking and the check engine light came on. The vehicle was returned to the Dealership. The car was then returned to me, the owner, only to have the Check Engine light come back on, so the car was returned a third time for "Transmission" related issues. The vehicle in question has been at the dealership for over two months as the Dealership tells me that they are going "back and forth with KIA Techline" to figure out the issue. …
My daughter was driving on the highway. She was driving at 65 mph and then the car started to jolt a couple of times. She kept driving and then it started to feel sluggish and lost some power. Would not accelerate over 45 mph. She was almost rear ended several times and people continually swerving in and out around her as she couldn't maintain the car at a normal pace. It eventually wouldn't go over 35 mph. Extremely DANGEROUS speed on a highway commute. She was able to finally get off highway. The car stalled. No warning lights ever lit. She was close to home at this point. Drove it home with barely any power. Got it towed to the dealer and transmission was blown and they will not cover it because it's past warranty of 5 yrs (2nd owner). The car is a 2019 with 53k miles. It should not need a new transmission. Apparently this car is now having many transmission issues. …
I have always gotten my oil changed on time and even had it changed a few days before my engine failed. I was driving down the road going home from work when my car started making a ticking sound that soon turned into a hard knocking sound coming from the engine. My car then shut off in the middle of traffic while at a red light. I tried to start it back up but nothing was happening. My check engine light never came on to give me any type of warning that the engine was in bad shape. Took it to the Kia dealership where it took over a month and a half to get someone to look at my car and give me an answer as to what was wrong with it. Kia knows that the engines in these cars are not built to last and that they could have failed before reaching 100,000 miles. I was also hung up on by someone from the Kia consumer hotline. …
Transmission was getting stuck in gear and slipping intermittently would cause the car to not accelerate over 20mph especially in the cold unless you switched it to the manual mode and manually shifted up two gears ans then back down two gears. If you looked at the tach while it did this is would bounce between 500 and 1500rpm and then would stutter and bounce between 1500 and 2500rpm until you did the manual gear trick. Eventually it started making a strange noise. I have serviced it on time and complained to Kia before about the issue which they stated they could not repeat so there was nothing they could do at that time and now when I took it back to Kia they stated its an internal trans issue and it now needs to be replaced but there was nothing they could do as it was now out of warranty. The car has less the 95k on it. …
Driving along the highway and transmission failure occurred, causing engine RPM to jump sky high and rapid deceleration without warning or brake lights. Luckily we were not hit by any other cars and were able to pull get off the highway onto the service road. Check engine light came on and the car wouldn't move. Turned the car off and back on after a few minutes and the transmission wouldn't move forward without massive RPM and no faster than 12mph or so. This is the SECOND time this has happened. I didn't report the first time because figured it was a one-off occurrence. The first time we had 26,000 miles on the car, this time, the new transmission went out after only 8,000 miles. All services have been performed by the Kia dealer directly. Car is back at Kia dealer for the transmission replacement again. …
My car was vehicle was driving on the highway over 200 miles away from home when I was driving about 65 mph the speed limit. When trying to accelerate on the Highway my vehicle would jump from 2,000 RPMs - 4,000 RPM not going faster. As I hit the gas my speed decreased and I pulled over the side of the road. When I tried to turn on/off my car the check engine light randomly appeared and I was stuck on the side of the road unable to accelerate. My car could have been rear ended on the Highway with Speed Limit of 65 MPH and I could have died if I didn't think quickly and pull to the side of the road. The dealer that the car towed to confirmed my car's transmission needed to be replaced. The only prior warning was my car's acceleration was decreased after Recall SC199 was completed by the dealership.
In May 2020, transmission started bouncing up and down on the highway. Then the transmission started skipping. When I came to a stop and tried to start again, there was almost no power going to the transmission. It created an extremely dangerous situation while trying to drive through an intersection with oncoming cars. The dealership replaced the transmission. in May 2021 356 days after the the second transmission was installed, it happened again and created another extremely dangerous situation when I tried to pull out into traffic and had no power. Kia is again going to replace the transmission but is going to use the same one that was installed originally and the replacement one. I think there should be an investigation into the transmission kia is using.
Related recalls
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.
Transmission complaints in other Forte years
Frequently asked questions
How common are transmission problems on the 2019 Kia Forte?
NHTSA has 48 complaints about the transmission & drivetrain of the 2019 Kia Forte, 32% of the model year's 149 complaints. The component named most often is automatic transmission › control module (tcm/pcm/tecm) (1 mentions).
Is there a recall for 2019 Kia Forte transmission problems?
Yes — NHTSA recall 20V-459 (axle shaft, Aug 5, 2020). Recall repairs are free at authorized dealers.
At what mileage do 2019 Kia Forte transmission problems start?
Half of the complaints with a recorded mileage happened before about 5,000 miles, and 83% before 25,000 miles.
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.