Engine & cooling

Kia EV6 Engine problems by year

40 complaints filed with NHTSA about the Kia EV6's engine & cooling. Stalling, loss of power, oil consumption, overheating, head gaskets, timing chains and engine failure.

Engine complaints by model year

142022 2023 2024 2025

Year	Engine complaints	Crashes
2025	5	0
2024	7	0
2023	14	0
2022	14	1

Latest EV6 engine complaints

2024 Kia EV6 Electrical system Acceleration & cruise control Engine & cooling

Dear Kia Customer Care, I am writing to formally report a serious and recurring safety issue with my Kia vehicle. I have repeatedly experienced a "Power Limited" error while driving, often accompanied by a turtle icon and a "Check Electric Vehicle System" warning. On multiple occasions, the vehicle has suddenly lost power and stalled in the middle of the road. This is extremely dangerous and has put me and other drivers at risk. A vehicle should never lose propulsion unexpectedly, especially in active traffic...

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conditions. I request an immediate investigation into this issue, along with a clear explanation of the cause and a permanent fix. Please treat this matter with urgency, as it directly concerns driver safety. Kindly confirm the next steps and the earliest available service appointment. Thank you,

2023 Kia EV6 Electrical system Engine & cooling Fuel system

The ICCU on the car died in the middle of the street, car would not shift out of park. Car completely died after a few minutes.

2022 Kia EV6 Electrical system Engine & cooling

Vehicle Safety Complaint My Kia experienced an ICCU (Integrated Charging Control Unit) failure and was at the dealership for approximately two months while awaiting repairs. The ICCU and related components were replaced, and I was told the vehicle had been repaired. However, immediately after I received the vehicle back, the "Check Electric Vehicle System" warning illuminated again. Since that time, the vehicle has continued to experience serious electrical issues. The vehicle has unexpectedly shut off while...

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stopped at red lights and has failed to restart on multiple occasions, leaving me stranded. This creates a significant safety hazard because the vehicle can lose the ability to move while in traffic, placing me and other motorists at risk. I have returned the vehicle to the dealership twice since the ICCU replacement, but the problem has not been resolved. The dealership has been unable to identify or permanently repair the defect. I have been without my vehicle for nearly three months this calendar year due to this issue. More importantly, I no longer feel safe driving the vehicle because I cannot trust that it will remain operational in traffic. I am submitting this complaint because I believe this represents a serious safety defect involving the vehicle's electrical system and propulsion system. I request that NHTSA investigate this issue to determine whether other Kia owners are experiencing similar failures and whether additional action is warranted to protect consumers.

2025 Kia EV6 Transmission & drivetrain Engine & cooling

Hi, I had to transport a few lumber pieces that did not fit into the trunk of my Kia EV6, so I had to leave the hatch open (I pulled it down as far as possible and secured it via a rope against the latch). When I started driving the car started beeping frantically, but allowed me to drive. When I crossed an intersection traffic came to a temporary halt, and when I came to a stop my Kia all of a sudden shut off and would not allow me to put it back into gear again. When traffic around me continued I was unable to...

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move and presented a security hazard with cars coming from behind almost running into me because they expected me to move, which I couldn't. I inquired about this at my dealership this morning and was told that there is no way to override the car's behavior and that this behavior was a "safety feature" to ensure the car wouldn't be driven with the hatch open. Now I'm asking since when is it a safety issue to knowingly drive with the hatch open to transport an oversize item - shouldn't that decision be left to the operator of the vehicle? In my opinion it's a much bigger safety issue to all of a sudden disable the entire powertrain of the vehicle when coming to a brief stop. What if the brief stop would have happened on a highway or freeway? Regards, [[redacted]] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

2023 Kia EV6 Electrical system Engine & cooling

Iccu failure with Kia ev6. Unreal that this car has not had a recall yet. It is totally unacceptable that this car can at any time fail. Car will not start and shut down while I was driving. Luckily I was beginning to park when it happened

2024 Kia EV6 Lights Engine & cooling Fuel system

Listing as all 3. ICCU/fuse went out, car decelerated to 45 MPH max and flashed a warning to pull over. The bottom left battery indicator for the 12v battery also changed to red, indicating it was not regaining power from the main EV battery. Currently in shop hoping to get part in soon

2024 Kia EV6 Transmission & drivetrain Electrical system Engine & cooling

The vehicle's ICCU unit stopped working out of the blue. This happened on a busy intersection and the car came to a sudden and violent halt. Luckily we were not involved in an accident. It's a very well known issue with these vehicles and it's really criminal that Kia has done nothing to fix it. They just change the ICCU unit and then it happens again.

2023 Kia EV6 Electrical system Engine & cooling Fuel system

*ICCU assembly and ICCU fuse fault (a kia recall SC327( NHTSA ID: 24V867000) for ICCU was performed months early but does't help AND iccu crash) *yes - cars stop workind in the midle of nower at 317 mile away from home with 5 persons in) *yes ( kia already performed recall SC327 for our car but doest help and the ICCU crash) *yes *yes-vehicle broke down while driving.Had to be towed to closest Kia dealer(the incidend hapened 317 miles away from our home Dacula GA 30019)

2022 Kia EV6 Electrical system Engine & cooling

I am reporting a recurring safety and reliability issue with my 2022 Kia EV6 GT-Line (VIN: [[redacted]] ). The vehicle currently has approximately 63,100 miles. The vehicle repeatedly displays a "Check Electric Vehicle System" warning message. This problem has occurred three separate times. On at least two occasions, the vehicle became undriveable and required towing. The failure appears to affect the vehicle's electric powertrain or control systems. The vehicle is currently being taken again to the dealership...

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(Lou Sobh Kia in Cumming, Georgia) for diagnosis of the same issue. This will be the third service visit for this recurring failure. Because this issue can cause the vehicle to become unexpectedly inoperable, I am concerned about the safety implications and believe it may indicate a broader defect affecting Kia EV6 vehicles. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

2025 Kia EV6 Transmission & drivetrain Electrical system Engine & cooling

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.

2022 Kia EV6 Transmission & drivetrain Electrical system Engine & cooling

The iccu failed on this car rendering the whole vehicle useless. This part is currently a recall and I was using a new ICCU with the software update per their recall solution. My second ICCU failed at approximately 40k miles.

2024 Kia EV6 Electrical system Engine & cooling

The car on 3/5 blanked out on all screens. shut car off and then came back on, no warnings came up. The car on 3/7 came up with "Check Electric Vehicle System" reverted to page 1-46 of Manual and advised do not drive, tow to nearest dealership. We drove car 4 miles home and the car had next to no acceleration, extremely dangerous and people nearing to back end us. To try and charge vehicle response is "unsuccessful"

2023 Kia EV6 Engine & cooling Fuel system

On April 24, 2025, I plugged my Kia EV6 into my 48-amp hardwired ChargePoint HomeFlex at 7:26 PM. Around 10:30 PM I heard a noise outside but did not investigate. At 12:25 AM I noticed I had not received a "charging complete" notification. The Kia Connect app showed the vehicle at 74% and no longer charging. The ChargePoint app was unresponsive.\n\nThe next morning I found the charger's 60-amp breaker had tripped. After resetting the breaker and rebooting the charger, the EV6 would not start charging and displayed...

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no "Charging started" or "Charging unsuccessful" message.\n\nI then attempted to charge using a portable Tesla Level 1 charger on a 120V GFCI outlet. The EV6 briefly announced "Charging started," but the dash showed no charging data. The outlet's GFCI breaker tripped. After resetting, the breaker immediately tripped again when reconnecting the vehicle.\n\nI attempted to drive to a nearby DC fast charger. Upon shifting into drive, the vehicle displayed "Check electric vehicle system" and entered power-limited mode (would not exceed 20 MPH). I returned home. While backing into my driveway, the vehicle triggered a red alert with "Stop vehicle and check power supply."\n\nThe vehicle was towed to a Kia dealership. They diagnosed a failed ICCU (Integrated Charging Control Unit) and high-voltage fuse. The ICCU recall issue is known for this model. Repairs took over two weeks due to parts delays. The ICCU and high-voltage fuse were replaced.\n\nThe ICCU failure also damaged my home ChargePoint charger, which required replacement under warranty

2022 Kia EV6 Electrical system Engine & cooling Fuel system

Persistent ICCU failure causing charging interruptions, "Check Vehicle Charging System" -> "Stop vehicle and check power supply" warnings, low 12V battery voltage (down to 12.1V), and risk of power loss/strand. Kia Connect sent "Charge Interrupted" alert during a session that reached 99%. Multiple prior recalls/attempts failed to resolve (Sep 2023 TSB ELE291 BMS, Jun 2024 SC271 ICCU SW, Jan 2025 SC273 VCU SW, May 2025 SA5999 limp-home logic, Sep 2025 dead 12V stranding). Towed Feb 2026 after stranding; dealer...

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confirmed ICCU failed (DTC P1A9096), replaced ICCU (P/N 36400-1XFA0AQQK latest revision), fuse, and SW update under SC327 (24V-867). Repair completed same day (Feb 24, 2026), but dealer skipped charging system test and filling coolant. Safety impact: Stranded wife twice (dead battery and iccu failure), tow required, potential sudden power loss while driving. Report purpose: Document recurrence despite multiple recalls; seeking NHTSA tracking for effectiveness of SC327 remedy.

2023 Kia EV6 Electrical system Engine & cooling Fuel system

On April 24, 2025, I plugged my Kia EV6 into my 48-amp hardwired ChargePoint HomeFlex at 7:26 PM. Around 10:30 PM I heard a noise outside but did not investigate. At 12:25 AM I noticed I had not received a "charging complete" notification. The Kia Connect app showed the vehicle at 74% and no longer charging. The ChargePoint app was unresponsive. The next morning I found the charger's 60-amp breaker had tripped. After resetting the breaker and rebooting the charger, the EV6 would not start charging and displayed no...

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"Charging started" or "Charging unsuccessful" message. I then attempted to charge using a portable Tesla Level 1 charger on a 120V GFCI outlet. The EV6 briefly announced "Charging started," but the dash showed no charging data. The outlet's GFCI breaker tripped. After resetting, the breaker immediately tripped again when reconnecting the vehicle. I attempted to drive to a nearby DC fast charger. Upon shifting into drive, the vehicle displayed "Check electric vehicle system" and entered power-limited mode (would not exceed 20 MPH). I returned home. While backing into my driveway, the vehicle triggered a red alert with "Stop vehicle and check power supply." The vehicle was towed to a Kia dealership. They diagnosed a failed ICCU (Integrated Charging Control Unit) and high-voltage fuse. The ICCU recall issue is known for this model. Repairs took over two weeks due to parts delays. The ICCU and high-voltage fuse were replaced. The ICCU failure also damaged my home ChargePoint charger, which required replacement under warranty.

Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked daily. Complaints are owners' own reports and are not verified. How we use the data