What 50 owners told NHTSA about the 2025 Kia Ev6

I have experienced a ICCU failure at 7200 miles on my 2025 EV6 GT Line. This failure is a safety hazard as it will quickly disable the vehicle and strand the occupants wherever they be at the time of failure. (highway, back roads, day or night). There are warning lights when this occurs, but there is a very limited time to get to safety, depending on the state of charge of the onboard 12v battery. This issue has been ongoing since this vehicle came out in 2022. There have been a number of recalls to address the problem, but apparently without success. I see postings all the time with others experiencing this failure. When I inquired about the availability of the replacement ICCU, I was told that the part was on national back order. I was also told there were 147 units in transit, 47 were already spoken for. This seems to indicate that this is a very common issue, affecting many drivers.

NHTSA ODI 11716673

11/28/25 on freeway car lost power and would only go 25mph and warning light came on. After short distance full power came back. 12/14/25 earliest appt with dealer and could not find problem. 01/09/26 Lost power and took car to dealer. Dealer said bad battery and they replaced battery. 1/20/25 lost power again and limped to dealer. Dealer found bad ICCU. They are now waiting for new ICCU to replace. When your driving 55 mps on freeway and suddenly drop to 25mph this is dangerous. The apx date required below is when I have taken the car and dealer confirmed ICCU problem not the original problem date of 11/28/25.

NHTSA ODI 11716756

ICCU failure at 3889 miles not charging and 12v battery failure

NHTSA ODI 11716396

Failure to charge properly on both alternating current and direct current platforms. Trips electrical breakers at residence while charging at home on AC current. The vehicle will only DC fast charge for a few minutes before charge session is prematurely terminated. I have been told by the KIA that it is a failure in the integrated charge control unit (ICCU). They told me there were 47 current problems right now in the state of Tennessee. I have not been issued a recall at this time. The logistics for getting a new ICCU could 2 weeks or greater. This problem could be catastrophic on long road trips.

NHTSA ODI 11716271

Erratic behavior before pulling out of parking lot: STOP vehicle check power, check 12V battery Stop safely engage parking brake. All dash lights started flashing, going black, power couldn’t be maintained, thankfully not on highway yet. Complete car failure, had to have 2025 EV6 jumped 4 times, battery still showed 41% charged, couldn’t keep charge to even get car in neutral for tow or doors locked. After each jump from tow company, power would last for less than 3-5 seconds, then dead, completely dead vehicle nothing worked.

NHTSA ODI 11708370

I was driving on the highway when I heard a pop like a loud fuse sound from the back seat area. Suddenly the car dropped 15 mph from 70 mph to 55 mph and the battery and electrical system warning lights came on and the vehicle said check electrical system. I was able to continue with my hazard lights on to exit the highway, at which point the max speed of the vehicle dropped to 45 mph. It would not go faster no matter how hard I pushed the gas pedal. I was able to pull over to a gas station and park in a spot but the vehicle had to be towed. When the tow truck arrived, the vehicle also flashed with the 12V battery low warning. It was diagnosed as a failed ICCU, which rapidly drained the 12V battery. The car is only 4 months old with about 7,300 miles. This is a serious safety concern, especially with the sudden failure and loss of power. I’m lucky I wasn’t hit and that I was able to get off the road before it totally died.

NHTSA ODI 11707594

After 2474 miles, the vehicle Integrated Charging Control Unit (ICCU) failed in my 2025 Kia EV6 making the vehicle undrivable so it had to be towed to the Kia dealer. The ICCU was replaced under warranty. The failure of the ICCU in Kia, Hyundai and Genesis electric vehicles is fairly common and they have yet to come up with a permanent solution.

NHTSA ODI 11707682

Driving down local (residential) roads, the ICCU died; towed to dealership 12/3/2025. All 12 volt electrical was inoperable. So no hazard lights, no shift to neutral, no locking the doors. It was towed to the dealer. ICCU is now being ordered. The Master Warning light and 12V battery warning light illuminated. I was fortunate to be able to park in a parking lot just before all electrical died. An Internet search shows that this is a known issue; and, even after the replacement the situation can happen again. Took delivery 6/28/25. So, not even 6 months old.

NHTSA ODI 11703422

On 2025-11-12, my car got BMS error P1B9700. On 2025-11-13, I took the car to local Kia dealer. The error is for battery temperature sensor. After 1 week, thst sensor have not been replaced nor any other numerous minor electrical defects were fixed. My car was just parked in dealer lot the whole time. No communication from Kia or dealer how to fix this potentionly dangerous battery problem.

NHTSA ODI 11700542

Power completely dropped while driving in traffic. This occurred several times. I could have easily been rear ended. Also, I could have been stuck within an intersection, I could have been broadsided. I see researched this issue and found it was widely written about in KIA EV6 online forums. Kia should have checked for issues before I leased the 2025 EV and informed me before I made a decision to lease vehicle. This occured in first weeks I drove the new car.

NHTSA ODI 11687215

I was driving over to walk my friends dog and I was pulling into the overflow parking area and my car just speed up and it would not stop. I went up a curb and I hit a small tree went down another curb crossed the street and then up another curb and the break would not stop the car. I finally just cut the car off

NHTSA ODI 11684498

ICCU failure caused loss of power on interstate. I almost got in a wreck because of this. Kia dealer refused to look at my car. Took vehicle to independent repair shop who diagnosed issue.

NHTSA ODI 11681042