2025 Kia K5 Powertrain & Transmission Problems

Transmission has extremely hard shifting if vehicle sits for more than 24 hours. After the vehicle is parked, inside garage, or outside, the first drive of the day has an extremely hard shift of the transmission on the first shifting of the day. The shift it so hard, it jerks the entire car and jolts me in my seat. The remainder of the drive and day, the hard shifting does not occur. Took the vehicle into dealership where purchased at 1000 miles and left it with them for 2 full days. Unsurprisingly, they said they were, "Unable to reproduce". The next day, the vehicle had the exact same problem. I have close to 3000 miles on the vehicle and the transmission continues to do the exact same thing every time I drive it. It is terrible for a brand new car. It doesn't matter which "Drive mode" the vehicle is in. The dealership also tried to reset the ECM. But no luck. My neck and back have been sore from the hard shift events too.

The K5 - as soon as I began driving it at 0 miles, I noticed it shifted at lower speeds extremely hard. Head-jerking hard during the first drive of each day at speeds below 25mph. Once the vehicle warmed up, the problem would go away and wouldn't appear until the next day - after the vehicle cooled down completely. I thought, maybe there was a break-in period. So I drove it for about 250 total miles. At that point, I made a service call and brought it into the dealership. I left it overnight. Explained all of the symptoms. The next day, one of your service advisors test drove the vehicle. I was called and told they were unable to reproduce the problem and that I could come pick up the car. I was told by your service advisor that the problem "could be rats or rodents in my garage". I was greatly taken back by that suggestion because I live in an upscale neighborhood, with a highly secured finished garage and have never had any rodent problems. I mentioned that to the service advisor, and she said "You'd be surprised how many people tell us they don't and we find out they had a rodent in their garage". I couldn't believe I was having a conversation of such sorts. I laughed it off and took the vehicle home, quite disgusted that it was suggested that this hard shifting might be "My problem because of rodents". I explained this to [XXX] that evening and couldn't believe that was even brought up given the situation. The very next day, the vehicle did the same thing at about 20 to 25 mph, and extremely hard, head-jerking shift on the first drive of the day. I have now driven the vehicle 3000 miles since new. I have tried driving in several different driving "modes". I've tried, Sport, My Drive, and others, but it doesn't seem to help. Every time I get in my car at O'hare after flying a trip, I look forward to driving a brand new car home, but left extremely disappointed when I drive away from the employee lot only to have an extremely hard, head-jerking shift for the first INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I had plenty of time to pull onto a perpendicular street. While accelerating the car would not shift to next gear. It hit about 4.2 rpm and still did not shift. I was almost hit!!!! After pulIing over to safety, I ensured it was not in manual mode. Started driving again and It wouldn’t go more than like 20 mph. I pulled over a second time and shut it off. Started it up again and it worked fine. 603 miles on this car. Kia is not interested in quality it seems.

While cruising at approximately 40 mph on a surface street, the car lost all power, completely shutting down. After rolling for two seconds it turned back on.