2025 Kia K4

46 complaints on file, page 1 of 3.

1. Filed Oct 1, 2026Failure Aug 2, 2026Douglasville, GAAir bags, Electrical system, Adaptive cruise control

   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.

   NHTSA complaint 11768305
2. Filed Aug 23, 2026Failure Aug 11, 2025Fletcher, OKWheels

   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.

   NHTSA complaint 11758856
3. Filed Jul 29, 2026Failure Jul 5, 2026Amsterdam, NYAssist, SteeringCrash2 injured

   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 National Highway Traffic Safety Administration 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)

   NHTSA complaint 11753551
4. Filed Jul 27, 2026Failure Jul 19, 2026Vinton, LAAir bags

   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

   NHTSA complaint 11753002
5. Filed Jul 18, 2026Failure Jul 13, 2026Hillsborough, NJElectrical system

   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.

   NHTSA complaint 11751322
6. Filed Jul 16, 2026Failure Jul 16, 2026Orlando, FLElectrical system, Unknown or other

   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.

   NHTSA complaint 11750872
7. Filed Jul 7, 2026Failure Dec 2, 202569,085 milesCanton, OHEngine and engine cooling

   The contact owns a 2025 Kia K4. The contact stated while driving at 40 MPH on several occasions, the vehicle stalled. The vehicle was able to restart but would immediately stall again, requiring the driver to wait approximately 10 minutes before the vehicle could be successfully restarted and driven. The vehicle was towed on one occasion and taken to the same dealer twice, but the dealer was unable to replicate the failure. The manufacturer was notified of the failure. The failure mileage was approximately 69,085.

   NHTSA complaint 11748745
8. Filed Jul 4, 2026Failure Jul 4, 2026Winston Salem, NCElectrical system, Engine, Unknown or other

   The car completely cut off while driving on the highway going 65 mph. This isn’t the first time it has turned off while driving. I had to pull over and put the car in park before it would turn back on. The error says Accessory Mode. I have taken the vehicle to Kia Dealership in Winston Salem but they told me they are unable to recreate the issue so they are unable to assist with the problem. The car turning off while driving has happened at least 20 times. I have repeatedly called Kia and they are unwilling to diagnose an issue with the vehicle unless it happens while they have it. I am putting myself and others at danger driving this vehicle. I contacted Hertz Auto sales where I purchased it and they directed me to contact Kia since I have a warranty. I plan on taking the car again but I can only hope the issue happens while they have it because this vehicle is VERY dangerous to be on the road and I have no other option than to be at the dealerships mercy.

   NHTSA complaint 11748312
9. Filed Jul 3, 2026Failure Jun 17, 2026Morrow, GAUnknown or other

   This car is a rental to [XXX]. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

   NHTSA complaint 11748151
10. Filed Jun 27, 2026Failure Jun 26, 2026Princess Anne, MDPower train

    Transmission slippage, rpms rev higher then mph, hesitates at red lights and stop signs

    NHTSA complaint 11746968
11. Filed Jun 22, 2026Failure Apr 26, 2026Kingsburg, CAEngine, Body, Unknown or other

    “The engine undercover (belly pan) detached and is dragging/scraping on the ground on a 2025 Kia K4 with approximately one year of normal use. The radiator support is also affected. Dealer (Selma Kia, Selma CA) denied warranty coverage and stated damage was caused by driver hitting a speed bump. These are factory-installed components on a one-year-old vehicle and should not detach under normal driving conditions. This appears to be a fitment or installation defect.”

    NHTSA complaint 11745734
12. Filed Jun 12, 2026Failure Jun 10, 202658,000 milesPensacola, FLBack over prevention, Electrical system, Engine and engine cooling

    The contact owns a 2025 Kia K4. The contact stated that while driving at 75 MPH, the vehicle downshifted upon depression of the accelerator pedal, with heavy white smoke coming out of the exhaust pipe. The contact stated that the low oil pressure warning light was illuminated prior to the failure. The contact pulled off the highway and drove into a store parking lot as the engine made an abnormal knocking sound. The contact requested assistance from a bystander, who advised the contact that the head gasket appeared to have blown. The contact checked and noticed that the coolant and oil levels were low. The contact added both oil and water to the vehicle and drove to the residence. The contact made a diagnosis appointment with a local dealer. Upon starting the vehicle, the check engine warning light illuminated, and the contact decided to tow the vehicle to the dealer. The dealer determined that the engine needed to be replaced due to sludge. Additionally, the contact stated that the vehicle had experienced various electrical failures, as the trunk, power door, and power windows buttons were inoperable. The contact also stated that the rearview camera image remained displayed while in drive(D) for an extended period. The contact was provided an estimate for the repair, and the vehicle remained in the dealer's possession. The manufacturer was notified of the failure and provided a case number. The vehicle was not repaired. The failure mileage was approximately 58,000.

    NHTSA complaint 11743732
13. Filed May 25, 2026Failure May 15, 2026Charlotte, NCAssist, Suspension, Wheels1 injured

    The warnings on the car all failed and I was lead off the road while going on a roundabout. This has trigged my car to completely lose all control and even though I was attentive to my steering wheel I still didn’t stop the car from leading me to that curb and off road onto grass etc.

    NHTSA complaint 11739853
14. Filed May 20, 2026Failure May 20, 2026Roebuck, SCAir bags, Automatic emergency braking, WarningsCrash1 injured

    Vehicle's forward collision warnings did not sound. Airbags did not deploy. Vehicle in front end collision at 40mph

    NHTSA complaint 11738950
15. Filed May 15, 2026Failure May 11, 2026Hampton, GAAdaptive cruise control, Power train, Vehicle speed control

    To whom this may concern, I was using my cruise control on my way to work. I usually set it to 80 because police are okay with that speed on I-75. I braked before my automatic brakes hit after I got cut off. I pressed resume in the cruise control and it accelerated pretty quick. I’ve experienced that quite a bit, but there’s been a few times that the car exceeded the set cruising speed while trying to resume. I forget it happens because it’s happened about 4 times since purchasing the vehicle. I noticed an officer on the shoulder leaving the shoulder as I got closer, and he got right behind me and cut his lights on, I look down and the cruise control shows 80 above the speedometer (photo attached taken while pulled over), BUT the arm was past the tick for 90. The officer clocked me at 92 apparently. This is the only time this issue has occurred, and I informed the officer that this happens. I have a court date set for July 9th now. I Googled to see if other owners have this problem. There are others who expressed experiencing this in their K4s and K5s. The AI tool explained the following • "Resume" Behavior: When you press the resume button, the car attempts to get back to 80 mph as quickly as possible. This aggressive acceleration can cause it to temporarily overshoot the target speed before settling down. • Settings Sensitivity: The acceleration strength and reaction speed can be set to "Fast" in your infotainment system, causing more aggressive throttle input.

    NHTSA complaint 11737989
16. Filed Apr 25, 2026Failure Apr 15, 2026Oklahoma City, OKAir bagsCrash2 injured

    I was hit on the driver side of the car infront of the driver door side of the hood and it took out my wheel and the car is totaled with how hard the hit was made my car bounce but the air bags never deployed and the fireman and the police officer said with as hard as I was hit it should have deployed

    NHTSA complaint 11733814
17. Filed Apr 6, 2026Failure Nov 23, 2025Mobile, ALSteeringCrash

    While driving my 2025 Kia K4, the steering system failed and became unresponsive. I was unable to steer the vehicle as intended. The exact cause of the steering failure is UNKNOWN at this time. The vehicle and steering components are available for inspection upon request. The loss of steering control put my safety and passengers riding at serious risk because I could not properly control the direction of the vehicle. Steering is essential for avoiding hazards, staying in the lane, and maintaining control. The failure resulted in a single‑vehicle accident and could have caused serious injury or involved other motorists if traffic conditions had been different. The problem has not yet been confirmed by a Kia dealership or an independent service center. At the time of this report, the vehicle has not been inspected by Kia or another repair facility. Police and/or insurance involvement may have occurred due to the accident, but no mechanical inspection of the steering system has been completed yet. There were no warning lights, messages, or alerts prior to the steering failure. The problem occurred suddenly and without warning while the vehicle was being driven. I did not notice any clear symptoms before losing steering control. The exact cause of the steering failure is UNKNOWN. Based on my personal experience, the failure was sudden and unexpected and occurred during normal driving conditions. I had no prior indication that there was a problem with the steering system before the accident occurred.

    NHTSA complaint 11729402
18. Filed Apr 6, 2026Failure Apr 5, 2026Deltona, FLEngine, Power train

    As I entered onto i4 reaching the speed of 60 miles an hour my vehicle began to make a high pitched whining noise that got louder as I pressed on the gas pedal, noise dissipated when I let off the gas pedal. Vehicle began to slow down on its own , even when applying pressure to the gas pedal, I had no choice but to pull over on i4, error message displayed “RED CAUTION EMBLEM” error message “Transmission Control Unit” Kia k4 app displayed Diagnostic Alert AT PO72200

    NHTSA complaint 11729395
19. Filed Mar 2, 2026Failure Jan 30, 2026Indianapolis, INAir bags

    After having my information panel replaced apx. a month later the airbag for passenger seat illuminated and has not gone off.

    NHTSA complaint 11721339
20. Filed Feb 19, 2026Failure Feb 1, 2026Elizabeth, NJEngine, Power train

    Engine Failure, Engine cooling and lost power

    NHTSA complaint 11719127