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What 15 owners told NHTSA about the 2023 Kia Niro EV

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (15)Crash / fire / injury (2)Electrical system (8)Brakes (3)Fuel system (3)Driver assistance (2)Speed control (2)Transmission & drivetrain (2)Airbags (1)Body & structure (1)Seat belts (1)Seats (1)

2 of 15 complaints match · Transmission & drivetrain · clear filters

Jun 15, 2026Transmission & drivetrainElectrical systemSpeed control

Check electric vehicle system warning light indicator illuminates and car stops driving on highway! A/C and defrost won't work properly and when turned on causes the above warning light and malfunction. Car will not charge at "fast" charging stations and will leave you stranded on highway. I live in [XXX] and the vehicle only does it when humidity is high outside. Issue also causes problems with the 12V battery. SEVERE SAFETY ISSUE WHEN CAR SHUTS DOWN IN THE MIDDLE OF THE HIGHWAY DRIVING AT ANY SPEED. It is the system ICCU (Integrate Charge Control Unit) that KIA has a limited warranty coverage on and should be reviewed for recall. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11744166

Feb 21, 2026Transmission & drivetrainElectrical systemFuel system

The vehicle is a rental vehicle. It experienced two incidents of sudden loss of propulsion within the first two days of operation. During both events, the vehicle became completely unresponsive to accelerator pedal input and would not move despite being placed in Drive. I attempted to shift the vehicle into Park and then back into Drive, but propulsion was not restored. No warning lights, malfunction indicators, or system messages were displayed before or during the failure. The first incident occurred while exiting a car wash. The vehicle became immobilized in an active traffic lane and would not respond to throttle input, creating an immediate risk of rear-end collision. Vehicles were approaching from behind and I narrowly avoided being struck. The second incident occurred later the same day in a parking lot while the vehicle was charging. Again, the vehicle became unresponsive without warning and would not move. The intermittent and unpredictable loss of motive power presents a serious safety hazard because it prevents the driver from maintaining control and safely operating the vehicle in traffic conditions.

NHTSA ODI 11719665

Working with the data? Download all 15 complaints as CSV · fetched from NHTSA July 12, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2023 Kia Niro EV verdict →