Independent · Not affiliated with NHTSA or any automaker MethodologyData sourcesData refreshed Oct 6, 2026

2021 Kia Niro: Problems, Recalls and MPG

What this means

NHTSA lists 1 recall campaign for the 2021 Kia Niro, most recently filed July 2023. Owners have filed 9 complaints with NHTSA, most often about the power train.

Data summary generated from official records. Methodology Data: NHTSA, DOT, EPA · Refreshed Oct 6, 2026
Caution Fewer than 50 complaints filed. With this few reports, patterns may not be meaningful.
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Recalls (1)

NHTSA lists 1 recall campaign for the 2021 Kia Niro. Check whether yours was repaired with NHTSA's free VIN lookup ↗

Only NHTSA and your automaker know whether your specific car was repaired. PlainVIN shows every recall campaign listed for a model year, with the official text and how many cars have been fixed so far.

Check on NHTSA ↗
Listed for 2021 Kia Niro. Not checked against your VIN.
Recall 23V534000 Filed Jul 31, 2023

Engine Compartment Fire

Power train · automatic transmission · internal · clutches/bands · actuators/solenoids
Official NHTSA text
Summary
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.
Consequence
A fire increases the risk of injury.
Remedy
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.
71.7% repairedof 121,411 vehicles
Manufacturer report to NHTSA · Source: US DOT recall completion data, retrieved Oct 6, 2026
Check your VIN on NHTSA or ask a dealer to check campaign 23V534000

PlainVIN shows public government records for education. It isn't a vehicle inspection or legal advice. Check your own VIN with NHTSA or your dealer.

Owner complaints (9)

9 complaints filed with NHTSA (owner reports, not verified findings). The power train is mentioned most often.

1involved a crash
0involved a fire
1injuries reported
0deaths reported

As reported by owners in their complaints. These are reports, not NHTSA findings.

Most-reported components

Complaints filed with NHTSA for the 2021 Kia Niro, by component (top 7). One complaint can list several components, so these add up to more than 9.Source: NHTSA ODI owner complaints · Retrieved Oct 6, 2026 · Report a data error

How 2021 compares with other Niro years

Best and worst Niro years →
2017201820192020202120222023202420252026
This year (2021)Other yearsStill collecting reports

Counts are owner reports, not failure rates. Higher sales years tend to draw more reports. Owners are still filing reports for recent model years, so these counts will grow. Source: NHTSA ODI, retrieved Oct 6, 2026.

Fuel economy: up to 112 mpg combined

112
mpg combined
123
city
102
highway
EPA annual fuel cost
$700
CO₂ tailpipe
—
EPA class
Small Station Wagons

What it costs you to run

$583per year
$49per month
134gallons a year

Miles ÷ 112 mpg × $4.354 (EIA US average regular, week of Oct 5, 2026, all taxes included). Source: EPA · EIA.

EPA label estimates from lab tests; your mileage will vary.

Specs by configuration

2021 Kia Niro configurations with EPA data
Engine · transmissionDriveCity / Hwy / CombEPA $/yrCO₂ g/mi
Electric · AutomaticFront-Wheel Drive123 / 102 / 112$700—
1.6 L 4-cyl · AutomaticFront-Wheel Drive53 / 48 / 50$1,350179
1.6 L 4-cyl · AutomaticFront-Wheel Drive51 / 46 / 49$1,350183
1.6 L 4-cyl · AutomaticFront-Wheel Drive48 / 44 / 46$1,45090
1.6 L 4-cyl · AutomaticFront-Wheel Drive46 / 40 / 43$1,550208

Source: EPA fuel economy data, retrieved Oct 6, 2026. Configurations are listed when EPA and NHTSA records match.

Used blue SUV on a sunny dealer lot with its hood open and a clipboard on the fender

Looking at a 2021 Niro for sale?

Print a one-page buyer's checklist: each recall campaign with a box to tick when the seller shows proof of repair, the top complaint areas to inspect, crash stars, MPG, and a link back to this page.

All Niro years

Where to next

2021 Kia Niro FAQ

How many recalls does the 2021 Kia Niro have?

NHTSA lists 1 recall campaign: 23V534000 (power train). Use NHTSA's VIN lookup to see whether a specific car was repaired.

What are the most common 2021 Kia Niro problems?

Owners filed 9 complaints with NHTSA. Power train (3), Electrical system (2), Engine (2) are mentioned most. These are owner reports, not verified findings.

What mpg does the 2021 Kia Niro get?

EPA rates the Electric · Automatic version at 123 city, 102 highway and 112 combined mpg. Other configurations are listed in the fuel economy section.

How does the 2021 Niro compare with other years?

Among the 2017–2021 Kia Niro model years at least five years old, the 2021 drew the fewest complaints (9) and the 2017 the most (82). The 2021 drew 9. Counts are owner reports, not failure rates.

How this page was madeSources, processing, limits, review and changes

Processing

  • Complaints are counted per component. One complaint can list several, so component totals add up to more than the total.
  • Fuel cost = miles per year ÷ EPA combined mpg × EIA weekly price for your region.

Limitations

  • Complaint counts are owner reports, not verified findings or failure rates. There is no sales denominator.
  • Recall campaigns are listed for the model year. Only NHTSA and the automaker know whether a specific car was repaired.
  • Recent model years are still collecting reports.

Review

Data compiled automatically from the official files listed here.

Changelog

  • 2026-10-06 Data refreshed from the official files.
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