What 50 owners told NHTSA about the 2025 Kia Ev6

Driving on three lane highway at 60 mph the car abruptly lost power. Was able to get off the highway. Called Kia roadside assistance. Tow truck picked up car and delivered it to Kia dealership. Service dept diagnosed and is replacing the ICCU.

NHTSA ODI 11746106

While charging at a L3 station, charging was interrupted with a pop (which turned out to be ablown fuse). Two warning lights appeared on the dashboard (battery and vehicle with exclamation points) as well as message to "Check electrical vehicle system". Kia Connect told me to exit the vehicle and that it would need to be towed to the dealer. Dealer Service Office confirmed it was not safe to be in the vehicle nor to drive it. Car had only 2311 miles at the time! From the dealer invoice the KDS was inoperative at the time. Fault codes: P1A961C LDS Internal Power Supply out of Range and P1A9096 LDC Input Voltage Sensor Component Internal Failure Confirmed 12V battery no charging in ready on. Live data does not match given good values. LDC input voltage ~2V, LDC Output voltage 11.4C Dealer replaced ICCU and ICCU HV Fuse. Filled and bled cooling system. Verified vehicle charges on L2 charger. (Note I had been charging on an L3; this has not been verified.) I was told the ICCU ASSY had a new part number and was coming from a different factory. This part had a cost of nearly $5000 but was covered under warranty. HV fuse also replaced under warranty.

NHTSA ODI 11743612

While driving car began to decelerate and the dash lit up with a number of ABS/Brake system failure symbols. I was on the highway traveling at abt 70 mph when the issue happened. Got car to coast off hwy onto an upward sloping exit. Stopped at a light. Turned off and back on and was able to gain minor speed got approx three blocks to a gas station. Pulled off and tried restarts. The screen stated there was an update pending, but it could not complete it because the Electronic Brake System failed. I tried triggering a brake reset but it didn’t work. Car was towed back to Dealership. Two days later the Dealership mechanic confirmed the issue was a failed Electronic Brake which must be replaced. Car has now been with Dealer for 10 days. Dealer stated the EBS was on back order and they do not have a timeline for the parts to come in. They’ve provided me a rental from their fleet which they are covering in full. Hoping this is resolved soon.

NHTSA ODI 11739429

While maneuvering my Kia EV6 into my garage, the vehicle accelerated unexpectedly and struck the garage wall. I believe the acceleration may have been unintentional or due to a malfunction. I request review of any vehicle event data

NHTSA ODI 11738339

2025 KIA EV6 ICCU (part#36401 1XFD5) failed at 2,658 miles. Failure occurred when power was applied after reversing out of a parking space, switching to drive and applying power. No safety issues as vehicle remained controllable. Vehicle went into "limp" mode. Build date of vehicle is 6/20/2025. KIA Dealer has replaced failed ICCU with updated unit (part#36400 1XFD6). No indication of failure occured prior to the failure (an audible "POP" heard from the rear cabin when the unit failed).

NHTSA ODI 11736153

As I was driving, there was a loud pop that came from the rear of the car. The vehicle immediately flashed a warning to “check electrical systems”. I pulled over as quickly as possible but was faced with reduced acceleration. I ended up stuck in a parking lot awaiting a tow truck for over an hour with my dog and my wife in the car headed to a surgery appointment. The dealership has not confirmed anything but from research it seems to be a known issue that Kia has not addressed.

NHTSA ODI 11735536

ICCU failure at 900 miles

NHTSA ODI 11734122

Loud pop and Check Electrical System Message - limited ability to drive due to ICCU no longer charging 12V battery. Car no longer able to drive.

NHTSA ODI 11733894

While driving Friday 4/17/26, I heard a pop and the car displayed a message to "Check electric vehicle system." The car seemed to still drive so I drive it home. That evening the car would not charge. I called Jim Shorkey Kia on 4/18/26, where I bought the car, to schedule the car to be looked at. They told me to bring it in on Monday and they will try to squeeze me in so they can diagnose the issue. Later that morning, I took that car out and made it about a block away before the car displayed a new message to "Stop vehicle and check power supply." At this point, the car went into a limp mode, barely moving. I was able to turn around and drive it home. Had I been on the highway, I might have been put in a dangerous situation. Now that the car has been diagnosed, the service department called and told me that the failed component was the ICCU. From what I've read, Kia claims that 1% of cars suffer from this issue. However, this percentage seems unlikely due to the number of online complaints. I wanted my experience to be an official documented case of this since I've heard that Kia has issued limited recalls in other countries and on older model Kia EV6's in the US.

NHTSA ODI 11732744

KIA has created a safety hazard by removing the ability for the driver to select LIGHT or DARK mode for the two 7" data and infotainment screens in their 2025 and forward EV6 electric cars. Like many, I have to drive in very fast busy commuter traffic on highway I-66. (exaserbated by driving into the sun in the AM) The DARK mode screens have insufficient contrast even with the screen lighting turned all the way up. It takes the drivers eyes away from the road longer than is safe, particularly in high speed freeway commuter traffic. This is seriously exacerbated if the driver uses sunglasses because of the sun. This is obviously not an issue confined to highway I-66, or me.

NHTSA ODI 11732411

Steering rack need to replace after drive almost 1900 miles. It has knocking nosie when turn the wheel, the car had been in the shop for three weeks.

NHTSA ODI 11732458

I START VEHICLE AND TRY TO PUT TRANSMISSION TO DRIVE ITS NOT WORKING AFTER I TRY TO PUT VEHICLE TO REVERSE TRANSMISSION ITS NOT WORKING

NHTSA ODI 11731966

ICCU and fuse failure when it was being moved out from the garage. Got a “Check electrical system” notification when I turned it on following a level 2 charge the night before. It was with the dealer for exactly one month before I was able to pick it back up.

NHTSA ODI 11730587

While driving on a sunny day on a 35mph road, my dashboard reported “Check Electrical Vehicle System”. A red battery symbol appeared and my cruise control disengaged with a message “requirements not met”. When I got home I read my 12 volt battery monitor that reported the battery was 11.99v and only had a 60% state of charge. Just prior to this short drive from home, my battery was 12.77v and had a 100% state of charge. I put in my ODB reader and it provided two error codes: P1A9096 and P1A961C. The first error code is the result of an ICCU failure in its DC to DC circuit (the one that charges the 12V battery from traction battery). Using a battery charger, I was able to fully recharge the 12volt battery. My monitor says that it’s healthy with 100% state of charge. Turning the car back on resulted in a rapid drain of the battery from 100% to 93% in just five minutes while parked. The electrical system failure warning lights are still lit. I’m having my car towed for repair. If this failure had occurred more than 10 minutes from my home, I would’ve been stranded.

NHTSA ODI 11729835

ICCU replaced after 5 months of purchasing new and less that 7,000 miles.

NHTSA ODI 11729999

ICCU failure.

NHTSA ODI 11728945

ICCU failure. Car lost power while driving. I heard a "pop" sound and then the car displayed a warning light moments before losing power. Car was towed to the dealership where they diagnosed and replaced the ICCU and a fuse. This is a known problem since the 2022 model year and seems to be a very common failure that the manufacturer is unable definitively repair. Thankfully I was on a local street and not on a highspeed highway when this occurred.

NHTSA ODI 11725397

The ICCU unit failed and the car first slowed and then stopped. I was able to pull off the road at an intersection. A tow truck had to jump charge the battery to allow the car to be shifted into neutral in order to pull it onto the tow truck.

NHTSA ODI 11725105

The battery had an electrical system failure warning after 5900 miles and has been in the shop for over a month.

NHTSA ODI 11724455

Windshield cracking on new Kia EV6 with only 2700 miles. Was 53 degrees outside so no defroster excuse. Seems to be a stress crack and looking online in KIA EV6 Forums, I've noticed it is not a one-off problem as many owners have had to deal with this.

NHTSA ODI 11724078

I was driving my car and the stop immediately and check battery sign came on. I had to have my car towed to the dealership. I read that the ev6 have ICCU problems and commonly need to be replaced. The car lost all acceleration and power and eventually stopped moving all together.

NHTSA ODI 11723234

Car has an NACS charger port, and is advertised by KIA as compatible with Tesla Superchargers and home chargers. The car will not charge at a supercharger nor at home using a Tesla charge cord that works with a Tesla Model 3.

NHTSA ODI 11723130

ICCU failure within three (3) days of buying vehicle. Only 300 miles on it. Failed to charge with known working Level 1 charger on day 1, successfully charged with Level 3 charger on day 2, and then failed to charge at same Level 3 charger on day 3. Simply connecting the Level 3 charger on day 3 had the car emitting "charger errors", and then followed that up with an "On board charger" fault. Vehicle no longer charges. Returned to dealer for repair.

NHTSA ODI 11723157

When shifting from reverse to drive there was a loud pop towards the back up the car. A check electrical system warning popped up, and then eventually a Check Power Supply stop now warning came up. The vehicle would not go above 26MPH and had to be stopped in a parking lot to be towed to the dealership. The ICCU went out and needed to be replaced, was at the dealership for 2 weeks for replacement.

NHTSA ODI 11722278

ICCU failure. Pulled out of driveway, heard a pop, received warning to pull over and check vehicle power. Car had to be towed to dealership but they are experiencing so many of these failures that they are extremely backed up on even being able to check out the car.

NHTSA ODI 11721869