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Engine & cooling

2024 Kia EV6 Engine problems

Owners have filed 7 complaints about the 2024 Kia EV6's engine & cooling with NHTSA - 9% of all its complaints, most recently on September 27, 2026. Stalling, loss of power, oil consumption, overheating, head gaskets, timing chains and engine failure.

Complaints
7
Recalls
0
Crashes
0
Fires
0
Injuries
0
Deaths
0

Engine complaints

Electrical systemAcceleration & cruise controlEngine & 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,

Filed Incident Electrical system · Vehicle speed control · EngineNHTSA 11767230
LightsEngine & coolingFuel 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

Filed Incident Exterior lighting · Engine · Fuel / propulsion systemNHTSA 11733307
Transmission & drivetrainElectrical systemEngine & 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.

Filed Incident Power train · Electrical system · EngineNHTSA 11732893
Electrical systemEngine & 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"

Filed Incident Electrical system · Unknown or other · EngineNHTSA 11722927
Electrical systemLightsEngine & cooling

The car his a module called the iccu that regulates the high voltage battery, battery range goes down, the iccu has been replaced with the vehicle only having 8k miles on the odometer

Filed Incident Electrical system · Exterior lighting · EngineNHTSA 11716362
Electrical systemEngine & cooling

The engine/power of my electric EV6 died. It went into limp home mode (speed limited) briefly before dying completely. I restarted it and was able to get it to a parking spot before it died again, but I was just lucky I was on a surface street with parking. Dealership confirmed it was an ICCU failure

Filed Incident Electrical system · EngineNHTSA 11714044
Electrical systemEngine & cooling

I see there is a lot of battery issues with KIA EV6 out lately; my car randomly died near my house and nothing was working, doors wouldn't open/close, hazard light wouldn't come on.. had the car towed to the dealership same day. they claim that they fixed my car properly and fixed the recall issue with the battery.. drove the car back home the same night. next morning; car is again dead and nothing is working; I feel very unsafe driving this car and i see online hundreds of kia EV 6 is having same issues. I don't think Kia is properly addressing this issue or the technicians know how to properly fix this.

Filed Incident Electrical system · EngineNHTSA 11641059

Kia EV6 engine complaints by year

EV6 engine problems, every year

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

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