2023 Kia Sorento acceleration problems

Filed May 28, 2026 · Acceleration, Brakes · CO

Vehicle exhibits repeated brake pulsation and vibration under normal braking conditions, affecting braking performance consistency. The issue began at approximately 10,000 miles and has progressively worsened. The vehicle currently has approximately 30,000 miles. The pulsation is felt through the steering wheel and brake pedal during moderate braking from highway speeds and occurs consistently across multiple driving conditions. The condition is significantly more pronounced when using the vehicle’s adaptive cruise control system. During normal operation, the adaptive cruise repeatedly applies the brakes automatically, and this consistently produces increased vibration and uneven braking response. This indicates the issue occurs during normal vehicle operation rather than abnormal use. The repeated pulsation creates inconsistent brake feel and may affect stopping performance, particularly during repeated or sustained braking events. This raises concern regarding braking reliability and stopping consistency, especially in traffic conditions where adaptive cruise control is actively managing following distance. The condition has steadily worsened over time and is present during routine driving. It is not limited to high-speed or heavy braking scenarios. A manufacturer Technical Service Bulletin (TSB CHA126V) exists for this vehicle model addressing front brake disc judder. The symptoms described in the bulletin match the condition experienced in this vehicle. Given the early onset, progressive nature of the issue, and the involvement of system-controlled braking (adaptive cruise), this condition appears to be related to component performance or design rather than normal wear. Kia response .. Dear [XXX] , Thank you for contacting Kia Customer Care. We do not see that bulletin related to this VIN, as such, any repairs recommended would be the responsibility of the vehicle’s owner. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed May 15, 2026 · Acceleration, Electrical · IL

All lights came on the dashboard including the check engine light and I could not accelerate. I had to pull over and turn car off and on to get it to accelerate. It poses a very serious threat as you can not accelerate at all and can be rearended. Kia has fixed the throttle twice and have told me 2 other times they can not replicate the issue. It clears out by the time I am able to bring it to the dealership. This issues has happened 4 times starting at 9,000 miles and most recently at 21,000 miles.

Filed Jan 6, 2026 · Acceleration, Electrical · AZ

I purchased a new 2023 Kia Sorento in February 2023 from Ken Garff Kia Avondale. Since shortly after purchase, the vehicle has experienced repeated electrical and mechanical failures that substantially impair safety. In July 2023, the vehicle began displaying flashing lights, dashboard error messages, and system malfunctions while driving, despite no collision or visible damage. The air conditioning system malfunctioned and blew hot air even when turned off. The dealership stated a front sensor was “damaged” and not warranty-covered, despite no visible damage, and verbally indicated that many other customers were experiencing similar issues. Repairs took nearly four months, during which Kia Corporate engineers were involved. The issue persisted despite repairs. In December 2024, the vehicle began displaying repeated transmission system error warnings, often within the first 5–10 minutes of driving, causing significant loss of speed and drivability. After multiple service visits, the vehicle required a full transmission replacement in July/August 2025 under warranty. Despite this repair, the same transmission errors returned in December 2025. More critically, the vehicle then experienced multiple sudden and complete electrical shutdowns without warning, including: Shutting off entirely while stopped at a red light, requiring a jump start All screens going black and the vehicle failing to restart Restarting only after being left parked for several minutes These events occurred without any battery or system warning indicators and created a serious safety risk, including risk of being stranded or disabled in traffic. The issues have been documented with photos, videos, repair records, and written communications. Due to the ongoing and dangerous nature of these failures, I am reporting this as a vehicle safety defect.

Filed Nov 30, 2025 · Acceleration, Driver assistance · WI

Check engine light on. Rear defrost doesn't work. Auto stop/start not working. Cruise control not working. Vehicle shuts off sometimes at stand still and have to put in neutral or park and push Start button. Engine looses power while driving. Check rear cross traffic, check tire pressure monitoring system, check lane departure warning system, check speed limit system, check lane keeping assist, check forward safety system lights are cycling on the front screen and warning ⚠️ signs pinging. Vehicle has been inspected 3 times at a local KIA DEALERSHIP. 1st in 4/2025, 2nd 6/2025 3rd time 10/2025. Module was replaced and 2 days later same issue so Vehicle will be going back a 4th time. No warnings before issues started. Sometimes it does it for hours and sometimes it's back to normal.

Filed Apr 5, 2025 · Acceleration, Electrical · WI

Vehicles instrument cluster goes black at times ( speedometer, tach and all exterior lights and turn signals are inoperative during this time) I took it to the dealership and they said they couldn’t duplicate the problem

Filed Mar 3, 2025 · Acceleration, Electrical · AL

Was driving up a hill when the 'Auto-Off' light started flashing on the driver display. Car would not accelerate above 20mph. At the top of the hill, I switched gears to neutral and the car began operating as expected; however, the same behavior occurred again at the next hill. Pulled over and restarted the car. Car worked as expected after restart. This is dangerous. I was taking my daughter to school in morning rush hour traffic. We live in a very hilly area and I'm terrified to drive the car. I dropped it off at the dealership almost 2 weeks ago and they have yet to identify the issue. I do see similar complaints on this site so I'm hoping that you are investigating.

Filed Dec 9, 2024 · Acceleration, Brakes · PA

What component or system failed or malfunctioned, and is it available for inspection upon request? I was driving and the car completely shut down- I could not use my brakes or accelerate. I had to pull along the road in ongoing traffic to coast to a stop. I lost all control. How was your safety or the safety of others put at risk? I was in traffic and the cars behind me had to slow down immediately, I could not speed up or even brake to come to a stop. Others around me as well as myself were in danger. Has the problem been reproduced or confirmed by a dealer or independent service center? They reviewed and said they scanned it and did a drive test and could not find the cause. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Yes, It was seen at the Kia dealer I bought it from. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? As soon as the vehicle lost power there was a warning sign on the dash that showed "limit" with a half circle emblem.

Filed Sep 17, 2024 · Acceleration, Engine · TX

I had just entered the highway and reached highway speed of 70 mph. Without any warning, the engine died, all of the dashboard lights came on, and I was unable to accelerate. Thankfully I was in the right-hand lane and there was an exit ramp a short distance ahead. The car decelerated as it had no power, and cars behind me were honking. I was able to exit the highway and coast into a parking lot just off the frontage road. Had I not been able to get off the highway, the vehicle would have been stalled in fast-moving traffic, and a pile-up could have easily occurred. I turned the car off using the push button start/stop, waited several minutes, and restarted the car. The check engine light was on and the car diagnostics system reported an issue with the "engine management system." Upon clicking the details link, the diagnostics system further stated "A possible condition with your Engine Control System has been detected. A full system check is recommended to be done soon. Please contact your local dealership to schedule an appointment." I took the car to a local Kia dealership, and they stated they could not recreate the problem. They reported they "inspected the vehicle for DTC's and found code PO65312 in history." They cleared the code and reported, in writing, that "no issues found during test drive, vehicle currently operating properly, no further action taken" and gave the car back to me without fixing anything. They stated it may need to be diagnosed for longer ext diag time. The vehicle is available for inspection, and I would appreciate any help I can get as I got no help at the dealership.

Filed Sep 30, 2023 · Acceleration, Driver assistance · AZ

I am writing to report a serious safety issue with my 2023 Kia Sorento, purchased in February 2023 from Ken Garff Kia Avondale. In July 2023, I began experiencing alarming issues, including flashing lights, dashboard error messages, and malfunctions, despite the vehicle being unused for several days with no visible damage. The air conditioning system malfunctioned, blowing hot air even when turned off. Upon inspection at the dealership, I was told the front sensor was damaged, with a repair estimate of $1700. However, no visible damage was evident, and I believe this issue should be warranty-covered due to its electronic nature. The dealership noted that 35 others faced similar problems, raising concerns of a manufacturing issue. Despite persistent efforts and a replacement part installed nearly two weeks later, the problem persists. I've incurred nearly $500 in rental car expenses, as the situation remains unresolved, even with involvement from Kia Corporate engineers. My aim in reporting this issue is to ensure consumer safety and seek a prompt resolution, as I continue to make $1k monthly payments for an unused Sorento. I respectfully request your assistance and prompt investigation into this matter. Sincerely, [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Aug 26, 2023 · Acceleration, Electrical · KS · crash · 1 injury

I was driving down the highway on cruise control going 67 on a 65. The car started revving up and then proceeded to go faster. I turned off the cruise control but its continued to speed up. I stomped on the brake 4 or 5 times with no effect. I rammed into the back of a bus at 110 mph.