2021 Kia Niro Problems

Below Average Complaints

Real NHTSA owner complaints for the 2021 Kia Niro.

20202022
Complaints
12
Crashes
1
Fires
0
Injuries
1
Fatalities
—
Recalls
1

Worst 2021 Kia Niro Problems

Top 3 most-reported issues with average mileage at failure.

#13 complaints

Transmission / Drivetrain

#22 complaints

Electrical Faults

#32 complaints

Engine Problems

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All Problems by Category

Every NHTSA complaint category for the 2021 Kia Niro.

Transmission / Drivetrain
3
complaints
Crashes
—
Fires
—
Avg Miles
—
Electrical Faults
2
complaints
Crashes
—
Fires
—
Avg Miles
—
Engine Problems
2
complaints
Crashes
—
Fires
—
Avg Miles
—
Unintended Acceleration
1
complaints
Crashes
1
Fires
—
Avg Miles
—
Wipers & Visibility
1
complaints
Crashes
—
Fires
—
Avg Miles
—
Sunroof/Moonroof
1
complaints
Crashes
—
Fires
—
Avg Miles
—

Search Owner Complaints

Read what owners actually reported to NHTSA for the 2021 Kia Niro. Type a keyword (e.g. “transmission”, “stalling”, “brakes”) to filter.

Recalls for 2021 Kia Niro

1 NHTSA recall campaign affecting ~121,411 vehicles.

23V534000Power Train:automatic Transmission:internal:clutches/bands:actuators/solenoids
~121,411 affected

Kia America, Inc. (Kia) is recalling certain 2017-2022 Niro and 2018-2022 Niro Plug-in Hybrid vehicles. Fluid may leak into the printed circuit board inside the hydraulic clutch actuator, which can result in an engine compartment fire.

Other Kia Niro Years

201720182019202020212022202320242025

2021 Kia Niro — FAQ

Answers based on real NHTSA complaint and recall data for this specific model year.

Is the 2021 Kia Niro reliable?
Verdict: Below Average Complaints. The 2021 Kia Niro has 12 NHTSA complaints, 1 crash-related, and 1 recall campaign. The most common issue is Transmission / Drivetrain with 3 complaints. Source: NHTSA via VinItel.
What are common problems with the 2021 Kia Niro?
Top reported problems: Transmission / Drivetrain (3 complaints); Electrical Faults (2 complaints); Engine Problems (2 complaints). Every complaint is filed by an owner with NHTSA — this is raw reported data, not editorial opinion.
How safe is the 2021 Kia Niro?
NHTSA complaints for the 2021 Kia Niro include 1 crash-related reports, 0 fire reports, 1 injuries, and 0 fatalities. These are owner-reported incidents, not official crash-test ratings — a complaint being filed doesn't confirm a defect, but clusters around specific components are worth investigating.
Does the 2021 Kia Niro have any recalls?
Yes — 1 NHTSA recall campaign affecting an estimated 121,411 vehicles. Recalls are free to fix at the dealer. Always verify by VIN whether the specific car you're looking at has had its recalls addressed.
Should I buy a 2021 Kia Niro?
Fewer complaints than typical for this model. That's a good sign, but every individual car is different — the VIN still tells you what happened to this specific one.

Source: NHTSA (National Highway Traffic Safety Administration) complaint and recall databases, aggregated by VinItel.

Wider context: See the full Kia Niro reliability report with year-by-year comparison and generation analysis.

Check Your Specific 2021 Kia Niro

Real owner complaints tell you about the model. The VIN tells you about your specific car — accidents, title issues, odometer fraud.

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