2025 Kia K4 problems

Filed Nov 7, 2026 · NV

My tire pressure sensor keeps alerting on the dashboard even after filling the tire with air. And it won’t go away.

Filed Nov 4, 2026 · Electrical, Engine · GA

Vehicle Safety Complaint – 2025 Kia K4 Unexpected Engine Shutdown I own a 2025 Kia K4 purchased new in August 2025. I am reporting a serious and recurring safety concern involving unexpected engine shutdown while the vehicle is being operated. The vehicle has experienced intermittent engine shutdowns, including while traveling at highway speeds. During these incidents, the vehicle switches into Accessory Mode, resulting in an unexpected loss of engine power while in motion. This issue first began before the vehicle reached 24,000 miles. The vehicle currently has approximately 58,000 miles. I previously brought the vehicle to an authorized Kia dealership for diagnostic evaluation. However, the dealership was unable to reproduce the problem or identify its cause. The underlying safety concern remains unresolved. I am particularly concerned because an unexpected engine shutdown at highway speeds creates a significant risk of a collision and endangers the occupants of the vehicle and surrounding motorists. I have also become aware of other owner-reported incidents involving 2025 Kia K4 vehicles experiencing unexpected shutdowns and switching into Accessory Mode while driving. I am requesting that the federal safety agency document this complaint and evaluate whether this recurring condition represents a potential safety-related defect affecting 2025 Kia K4 vehicles. I am willing to provide additional documentation, dealership records, and vehicle information if needed. Vehicle: 2025 Kia K4 Purchase date: August 2025 Current mileage: Approximately 58,000 First occurrence: Before 24,000 miles Dealer investigation: Conducted, but no cause identified.

Filed Nov 3, 2026 · Driver assistance · 9,000 miles · NJ · crash

The contact owns a 2025 Kia K4. The contact stated that while driving at various highway speeds, the lane keep steering assist erroneously engaged causing the vehicle to steer out of the intended lane. The contact stated that the failure was recurrent, causing the vehicle to unintendedly steer to the left and to crash into a concrete median wall on one occasion. The failure mileage was 9,000.

Filed Oct 12, 2026 · Electrical, Fuel system · LA

I purchased my 2025 Kia K4 in March 2025. Approximately two months after purchasing the vehicle, around May 2025, I began experiencing serious and recurring safety issues. While driving, the vehicle intermittently loses acceleration and becomes unresponsive when I press the gas pedal. When this occurs, I have to pull over, turn the vehicle off, and restart it before I can continue driving. On other occasions, the vehicle has unexpectedly shut off and restarted on its own while I was driving. The dashboard also goes completely black during these incidents. I have taken the vehicle to an authorized Kia dealership for inspection, but I was informed that the dealership could not duplicate the problem. The issues have continued, leaving me concerned about the safety of the vehicle. I previously requested that Kia repurchase or replace the vehicle, but my request was denied. I am requesting that the federal safety agency investigate these recurring loss-of-power, stalling, and electrical issues because they create a serious risk of a collision.

Filed Oct 1, 2026 · Airbags, Driver assistance · GA

Check Driver Assistance System light came on. It wasn’t until driving at night that I realized the steering wheel had no power. The horn, buttons, and lights all did not work or function. This also caused all driver assistance settings to not work or function. With no power to the steering wheel, their is no way of knowing if the airbag would deploy. The problem was seen by the dealer and after two months of repair attempts, the clock spring was replaced. The light slowly started coming on and then finally stayed on. Later I noticed the horn and lights were not working on the steering wheel.

Filed Aug 23, 2026 · Wheels · OK

The tpms system will stop working and display a message saying check tire pressure monitoring system. While this message is displayed i cannot see any tire pressures and presumably will not receive any warnings about tires losing pressure. It starts working again on its own at seemingly random intervals. The dealership has been asked to look at it and found no issues. They asked to bring it back when the message was displayed but it is difficult to get the message to pop up and get to the dealership without it going away again.

Filed Jul 29, 2026 · Driver assistance, Steering · NY · crash · 2 injuries

I am submitting this complaint regarding a suspected safety defect involving a 2025 Kia K4. On XXX, the vehicle was involved in a single-vehicle crash in the Town of [XXX]. According to the driver, the vehicle unexpectedly steered off the roadway when the Lane Keeping Assist/Lane Centering steering system appeared to intervene. The driver attempted to maintain control but was unable to keep the vehicle on the roadway. The vehicle entered a ditch and struck a utility pole, causing significant damage to the passenger side. The front and rear passenger-side airbags deployed. The front passenger window shattered, sending broken glass onto the front and rear passengers. My daughter was seated in the front passenger seat, and my [XXX] granddaughter was properly restrained in a rear child safety seat. Both sustained injuries and required medical evaluation following the crash. After the collision, I began researching similar incidents and found other owners reporting concerns involving the steering assistance and lane-keeping systems. While I cannot determine the exact cause of this crash, I believe the possibility of an unintended Lane Keeping Assist or steering system intervention should be investigated because it may present a safety risk to other motorists. I respectfully request that the federal safety agency review this incident, along with any similar complaints involving the 2025 Kia K4, to determine whether a defect exists in the vehicle's steering assistance, Lane Keeping Assist, Lane Following Assist, or other Advanced Driver Assistance Systems (ADAS). Supporting documentation can be provided if requested. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jul 27, 2026 · Airbags · LA

Air bag did not deploy, yes High Risk Yes Yes No Hit a street sign. Went through radiator, bent frame in front on passenger side, busted windshield, punctured roof. Car is totaled

Filed Jul 18, 2026 · Electrical · NJ

The primary Dashboard of the vehicle stopped working (while driving the car) and i lost access to all important information such as speed, RPM, current cruise setting, milage, visual alerts for any driver assistance warnings. The entire screen went black and showed “NO SIGNAL” in red text in the middle. It later came back after a few minutes. This issue has occurred 5 times so far and 4 of them being while driving the car within 1 week. The dealer is confirmed this is an issue and recommended an entire dashboard replacement for the vehicle. This is very unsafe because i cannot determine my speed or any other important warnings the vehicle may give me during my drive. There were no warnings or symptoms prior to the first failure.

Filed Jul 16, 2026 · Electrical · FL

I'm not sure what's going on. It's telling me to start stop the car when it's running and then it will turn off and go into accessory mode even when I'm driving that's dangerous. I took it to Kia a month ago for the same thing but they said they couldn't find anything, but it has to be something if I'm not the only one saying this is happening to their car. my car doesn't even have 8000 miles on my car.