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ProblemsByVinFile / 2021-KIA-NIRONHTSA data synced 6 days ago
Kia
2021 Kia Niro problems
The 2021 Kia Niro has 1 active recall campaign on file and only 9 owner complaints in the NHTSA database. Often that means the recall caught it before the field did.
The 2021 Kia Niro has 9 NHTSA owner complaints and 1 recall on file (U.S. federal records, as of September 2026). The most-reported system is powertrain at 3 complaints (~$2,500 to repair). Source: NHTSA Office of Defects Investigation.
Limited NHTSA data — only 9 complaints on file. The score reflects what's reported, but a small sample skews easily. 1 active recall on file.
0
Critical
1
Severe
0
Moderate
Should you avoid this 2021 Niro?
Not enough data for a verdict
Only 9 NHTSA complaints on file — too few for a confident call. The 1 active recall above remain authoritative; read those first.
Our read of the federal NHTSA complaint and recall record for this exact year and model —
not a substitute for a pre-purchase inspection. How we score.
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While driving on a major highway, my sunroof suddenly exploded. Luckily the screen was pulled shut otherwise I would have been covered in glass. I was able to drive to the next exit and park the vehicle to then get out and observe the damage. There was a gaping hole in the…
I was backing out of a tandem parking spot in a private garage and got too close to a pillar, and tried to pull forward into the spot. It felt like the car got snagged on the pillar, but while pulling forward slowly, the gas pedal snapped off and the car accelerated quickly and…
There is a silver strip of "trim" running completely across the dashboard just above the radio controls. It is so reflective that a glare occurs periodically throughout the day when the sun hits it. It's so bad that it blocks the left side mirror with the reflection and can even…
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Fix: Dealers will inspect and replace the hydraulic clutch actuator as necessary and install a new fuse, free of charge. Owner notification letters were mailed December 29, 2023. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC276.
Common questions
Is the 2021 Kia Niro reliable?
Limited NHTSA data. Only 9 owner complaints have been filed for the 2021 Kia Niro, which is not enough for a meaningful reliability score. Active recalls (if any) are listed on this page and remain authoritative — those are verified defects regardless of complaint volume. For a confident reliability read we look for at least 10 owner complaints in the federal database.
Should you avoid the 2021 Kia Niro?
Only 9 NHTSA complaints on file — too few for a confident call. The 1 active recall above remain authoritative; read those first. We don't issue a buy/avoid verdict on the 2021 Kia Niro without a meaningful complaint sample — doing so off a handful of filings would be guesswork.
What should I check before buying a used 2021 Kia Niro?
There isn't enough NHTSA complaint data on the 2021 Kia Niro to flag a standout failure pattern. Run the VIN for open recalls — those are free to fix regardless of warranty — get a standard pre-purchase inspection, and ask the seller for service records.
Is the 2021 Kia Niro a good used car to buy?
Hard to say from federal data alone — only 9 owner complaints have been filed. Lean on the recall list above, a pre-purchase inspection, and a vehicle-history report on the specific VIN. Our data tells you what the model is known for; a history report tells you what that exact car has been through.
What's the most common problem on the 2021 Kia Niro?
Based on NHTSA records, the most-reported issue is powertrain, with 3 complaints filed. Average repair cost runs about $2,500 at an independent shop.
What's the most expensive thing that goes wrong?
The powertrain is one of the costlier repair items. Average repair cost runs about $2,500 at an independent shop. Catching early warning signs can sometimes extend life by 20–30,000 miles.
How do I check if my Kia Niro has open recalls?
Paste your VIN into the decoder at the top of this page. We pull live from NHTSA, so you'll see exactly which campaigns apply to your vehicle and whether the dealer has logged the fix. Recall repairs are always free regardless of mileage or warranty status.
Is an extended warranty worth it on a 2021 Kia Niro?
Hard to say from NHTSA data alone with only 9 complaints on file. A quality service contract runs $1,800–3,500 over 3 years. The decision comes down to your specific situation: vehicle cost, miles on it, how long you plan to keep it, and whether you can absorb a $3K–$8K repair without straining cashflow. With limited public data on this vehicle, lean on the recall list above and check owner forums before committing.
Recall and complaint data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database, last synced 6 days ago. Verify the raw federal record at
nhtsa.gov/vehicle/2021/Kia/Niro.
Editorial commentary written by ProblemsByVin contributors and reviewed by ASE-certified mechanics.
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