2021 KIA K5 Power Train Problems

The contact owns a 2021 Kia K5. The contact stated that while his daughter was driving approximately 15-20 MPH, the engine revved and the gears in the transmission unexpectedly failed. In addition, the vehicle failed to accelerate as intended while depressing the accelerator pedal. No warning lights were illuminated. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. Due to the safety concerns, the vehicle was no longer driven and remained parked at the residence. The manufacturer was not informed of the failure. The failure mileage was unknown.

Mileage: 15

The contact owns a 2021 Kia K5. The contact stated while driving approximately 30-40 MPH, while the transmission was shifting gear, the vehicle started sputtering and jerking. The contact stated that the failure occurred while shifting from 1st gear to 2nd gear, and from 2nd gear to 3rd gear. There were no warning lights illuminated. The vehicle was taken to the dealer who diagnosed the vehicle with an erratic gear shift with a grinding sound coming from the transmission. The vehicle was not repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 98,000.

Mileage: 98,000

I recently purchased a Kia k5 2021 gt line awd one month later I noticed there was recall I take to the dealership they let me know it will only take a few hours (3) and I can pick up later the same they call me 3h later and let me know sorry this case is going to take a few weeks and I should pick up rental car and they will pay for my rental so I did I come back one month later nothing as been done they just tell me to wait and they can’t release due to the safety recall the tank has swelled up it has been 3mont now and they still haven’t done anything to the car and I can’t sell the vehicle cause they won’t release it

very bad antifreeze smell under hood dealer said normal not healthy to smell that its in all of this model car in multiple years needs a recall to force kia to fix this unhealthy problem. 3/1/25 is when i bought this car. thankyou

While driving on my way home from work my , brakes became extremely hard to press down on and then my service engine light came on this all occurred on 7/31/2024. So the very next day I took my vehicle to a Kia dealership which was 8/1/ 2024 to find out what was causing this to happen. The technician stated that they would have to put it on a machine and run a diagnostic on it. I asked the technician while they were doing that to change the oil. I also realized that the oil light for my vehicle has NEVER came on since I purchased the car. So the technician did the diagnostic and stated that my vacuum pump had went out but he couldn’t tell me why or how this had happened. I then took the vehicle to my parents house and left it there in the garage for a few weeks to have second opinion done. I then took it to another Kia dealership and they stated there was no vacuum to the brake booster and said there was a broken camshaft and metal pieces were in the engine and the engine needed to be replaced. Again I asked what caused all of this and no one could give me an answer. I had only had the car a 1 1/2 years and don’t understand what caused all of this and I now have a car that I can no longer drive.

Car will lose power when accelerating and slow down to an almost complete stop in traffic with no pick up it will jerk as it is trying to accelerate it has happen two times in six months

Loss of power. Check engine light came on

Very bad transmission slip during acceleration from stop and at highway speed

My vehicle has been experiencing shifting delays when accelerating. Often times when I stop accelerating my vehicle has a delay and remains revved up for a few seconds before the RPM's go back down. The sluggish/delayed acceleration presents a safety issue when the vehicle is not operating as it should. This issue has been occurring for about 6 months. I informed the dealership where I purchased the vehicle and have the routine maintenance done and they say there are no issues reported about the issues I have been having. I addressed the issue again over the weekend when I had my oil change and tire rotation on April 1, 2023 and I have been told the same thing that there are no issues reported. But the dealership fails to report the issue I had addressed the first time.

BRAND NEW VEHICLE PURCHUSED OFF SHOW ROOM FLOOR WITH 4 MILES ON IT. 3 MONTHS AFTER OWNERSHIP, WHEN PUSH TO START THE CAR. THE STEERING WHEEL WILL LOCK UP, UNABLE TO DRIVE AND A SYSTEMS CHECK WILL DISPLAY ON THE DASH. IT DOES NOT STOP, UNTIL YOU TURN THE CAR OFF AND ON SEVERAL TIMES, WITH NO SET AMOUNT OF TIMES UNTIL THE CAR IS DRIVABLE AGAIN. THE CAR HAS BEEN BROUGHT TO KIA SEVERAL TIMES FOR SERVICE, BUT THEY HAVE NEVER BEEN ABLE TO DETERMINE A REASON. A LEMON LAW WAS FILED AND COMPLETED IN 2022. THE CAR SINCE THEN HAS CONTINUED TO HAVE THE STEERING WHEEL LOCK UP RANDOMLY WHEN STARTING IT AND HAS EVEN PROGRESSED TO DOING IT WHILE DRIVING ON THE HIGHWAY!!! NO RECALL FROM KIA HAS BEEN ISSUED. THEY ARE JUST WAITING FOR SOMEONE TO DIE!

1. Car has completely lost power during normal driving. Transmission failure. Loss of Motive power. It is available for inspection upon request 2. Car lost all motive power while on the highway, car had to coast to a stop. This was very dangerous. 3. Car was taken to the Kia dealership, diagnosed by their techs, and transmission replaced. This has occurred two times since the car was purchased new. First at 4,600 miles (6/13/2021) , second at 16,600 miles (9/7/2022). Both times dealership replaced the transmission 4. Both times this occurred the check engine light illuminated and a warning to pull over immediately. There were no prior symptoms when this occurred. The failures happen suddenly. There is apparently already a recall for this issue for the Hyundai vehicles that have this very same engine/DCT combination. Recall #236. This same issue is also occurring on the 2021+ Kia Sorento and 2021+ K5 GT 2.5L

This report is being filed as a duplicate to 11488885, as this issue occurred twice. Please see 11488885 for details, as issue was exactly the same. I have attached the dealership repair invoices for both incidents as I forgot to do so in 11488885.

Does not always shift like it is supposed to

TRANSMISSION REQUIRES TOTAL REPLACEMENT WITHIN 5 DAYS OF PURCHASE OF NEW CAR. VEHICLE WAS PARKED WHEN TRANSMISSION FLUID LEAK WAS DISCOVERED. IT WAS DRIVEN BACK TO THE DEALER, WHICH IS NEARBY, BUT THIS EXPERIENCE HAS SHAKEN OUR FAITH IN THE SAFETY AND BUILD QUALITY OF THIS 2021 KIA K5 GT-LINE.

Mileage: 298