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What 9 owners told NHTSA about the 2021 Kia Niro Phev

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 (9)Crash / fire / injury (1)Transmission & drivetrain (3)Electrical system (2)Engine (2)Visibility & wipers (2)Speed control (1)

3 of 9 complaints match · Transmission & drivetrain · clear filters

Apr 10, 2026Transmission & drivetrain

This is a hybrid vehicle. It has Dual clutch transmission. Since I have owned it, intermittently the clutch does not disengage completely. This causes the vehicle to try to pull ahead but my foot is on the brake. The vehicle does not stall. Somehow it figures out it can't pull ahead and somehow fully releases. I have brought it to kia at least 3 times. In each case they tell me they cNt get the car to fail and since there are no codes produced they can't fix it. They even held onto the car several days. I asked them to please replace SOMETHING but the say Kia policy will not allow them to do that. So I am stuck with a car that keeps misbehaving. It is embarrassing because problems occur while a passenger is in the car and it seems to them that I am not driving correctly. I don't know what to do.

NHTSA ODI 11730504

Mar 20, 2026Transmission & drivetrainEngine

EV motor and drive train have a clattering noise, much like a playing card attached to a bicycle clattering against the wheel spokes. it speeds up and slows down with the acceleration of the motor.

NHTSA ODI 11725753

Feb 7, 2024Transmission & drivetrainElectrical systemEngine

I received important safety recall letter for NHTSA recall # 23V534. the HCA & or Fuse might need to be replaced . I brought the 2021 Nero to my local Kia dealership, Eagle kia ,Riverhead NY on January 18th. The dealership still has the vehicle & claims that a code came up when they did the diagnostics That requires a part that must be secured to complete the fix for the recall. they claim they are awaiting approval from kia corporate & NHTSA to add to the technical bulletin. But their is no timeframe they have or when this additional part will be available. The dealership has the fuses & Harness for the HCA replacement, but needs this additional part. I asked what the # of this part is or name, but all they would tell me TBT.

NHTSA ODI 11570590

Working with the data? Download all 9 complaints as CSV · fetched from NHTSA July 15, 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 2021 Kia Niro Phev verdict →