20222021 model year2020
NHTSA Official DataUpdated: May 2026How we calculate this
Severe Issues

2021 Kia Rio: Is It Reliable?
Problems, Recalls & Buyer Verdict

Shopping for a used 2021 Kia Rio? This page highlights owner-reported complaint patterns and recall history so you can inspect the right systems before buying. Current data includes 15 complaints, with Uncategorized Issues as the top reported area.

15
Complaints
2
Crashes
Fires
Injuries
Deaths
2
Recalls

2021 Kia Rio Fuel Economy

✓ EPA Official Data

EPA official fuel economy rating for the 2021 Kia Rio.

33
MPG City
41
MPG Hwy
36
MPG Combined
249
g CO₂/mile
Regular Gasoline
💰Saves $2,500 vs. avg vehicle over 5 years

Source: EPA FuelEconomy.gov. Figures reflect EPA lab testing; real-world results vary by driving style, load, and conditions.

2021 Kia Rio Safety Ratings

NHTSA 5-Star Program

Official crash test results from the NHTSA 5-Star Safety Ratings program. Stars reflect government-conducted tests; higher is safer.

Overall

Not Rated

Frontal Crash

Not Rated

Side Crash

Not Rated

Rollover

Not Rated
Stability Control: StandardForward Collision Warning: NoLane Departure Warning: No

Source: NHTSA 5-Star Safety Ratings. Ratings are based on government crash tests and may not reflect all trim levels.

Quick Answer

Based on NHTSA complaint data, the 2021 Kia Rio has 15 owner complaints, 2 crash-related complaints, and 2 recall campaigns on record. The most frequently reported component is Uncategorized Issues. NHTSA reliability signal: Severe Issues.

2021 Kia Rio — key reliability facts
Make
Kia
Model
Rio
Model year
2021
NHTSA owner complaints
15
Crash-related complaints
2
Safety recall campaigns
2
Top reported component
Uncategorized Issues
Reliability signal
Severe Issues
EPA MPG combined
36
EPA MPG city / highway
33 / 41
Fuel type
Regular Gasoline
Electronic stability control
Standard

Most Common 2021 Kia Rio Problems

Top owner-reported complaint areas and where they often appear.

#1
6
complaints

Uncategorized Issues

#2
4
complaints

Steering Defects

Crash-related:1
#3
3
complaints

Brake System

Crash-related:2

Complaint patterns center on Uncategorized Issues, Steering Defects, Brake System. Use these as a pre-purchase inspection guide, then verify recall and damage history on the specific VIN.

Should You Buy a Used 2021 Kia Rio?

The 2021 Kia Rio shows higher complaint activity for its model-year profile, so buyers should inspect known problem areas carefully before purchase.

Use the model-year trend to shortlist candidates, then confirm the exact vehicle condition with service records, recall status, and a VIN history report.

What to Check Before Buying a Used 2021 Kia Rio

Inspection Focus

  • Inspect for any uncategorized issues reported by previous owners.
  • Verify all open recalls at nhtsa.gov/recalls.
  • Request service records for steering, brake, and transmission systems.
  • Have a mechanic inspect the vehicle before purchase.

Before You Close the Deal

  • Inspect for any uncategorized issues reported by previous owners.
  • Verify all open recalls at nhtsa.gov/recalls.
  • Request service records for steering, brake, and transmission systems.
  • Have a mechanic inspect the vehicle before purchase.

Shortlist with model-year data. Decide with the exact VIN.

Before buying a used 2021 Kia Rio, run a VIN history report to verify accidents, title brands, odometer records, theft checks, and open recalls for the exact vehicle.

What the Complaint Data Suggests

Editorial interpretation of NHTSA public complaint data. Source: nhtsa.gov. Complaints are owner-submitted and do not confirm a defect. Methodology

Complaints for the 2021 Kia Rio are concentrated in uncategorized issues and steering defects, with a low number of total complaints. Crash-related complaints are minimal, but the data is limited due to low sample size.

Key Findings
  • Uncategorized Issues account for the highest number of complaints.
  • Steering Defects are the second most reported component.
  • Only 2 crash-related complaints were reported.
Top Concerns
  • Uncategorized Issues (6 complaints)
  • Steering Defects (4 complaints)
  • Brake System problems (3 complaints)
Data note: NHTSA complaints are consumer-submitted and do not confirm a manufacturing defect. The total of 15 complaints is a small sample, limiting reliability. Confidence level is Low, so findings should be interpreted cautiously.

All 2021 Kia Rio Complaints by Category

Every owner-reported complaint category filed with NHTSA for the 2021 Kia Rio. Use this as a pre-purchase inspection checklist.

ComponentComplaintsCrashesFiresAvg MileageVolume
Uncategorized Issues6
Steering Defects41
Brake System32
Transmission / Drivetrain2
Engine Problems2
Electrical Faults1
Back Over Prevention1
Seat Belt Issues1
Lane Departure1
Fuel/Propulsion System1

Source: NHTSA Complaints Database. Complaint counts may exceed total complaints because one report can span multiple categories.

Real Owner Complaints

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

Showing 15 most recent complaints

Uncategorized IssuesDec 28, 2025

Back up camera sometimes flips sides, so that obstacles on the right side of the car are shown on the left side of the camera screen. Sometimes the camera doesn't work at all.

Steering DefectsMay 14, 2025

Steering Gear Assembly completely broke at 81,000 miles. My daughter was backing up in a busy street at 5pm and lost 100 percent of steering control. Lucking cars dodged her and she didn’t get hurt or worse.

Transmission / DrivetrainNov 14, 2023

Placed car in park got out to open a gate. Car took off forward even when shifter was in Park Position and almost ran a child over.

Electrical FaultsAug 24, 2023

Center Console Display blank (screen black) upon startup unable to see cameras and backing up affected creating safety concern.

Seat Belt IssuesMay 2, 2023

seatbelts in rear are inoperable/anti theft not working. Kia dealership told me that its not their issue about the anti theft. I have been told on 3 separate occasions that my seatbelts have been ordered but they haven’t!!!! No one is following up with me, when I call I get told …

Uncategorized IssuesMar 26, 2023

At speeds over 20 miles per hours there is a “flapping” noise that sounds like a bag or piece of paper that is blowing in the wind. Although I don’t know were the noise originates, I can hear it clearly from the driver’s side b-pillar. It is incredibly annoying and greatly dimi…

Steering DefectsMar 20, 2023

On 3/19/23, as I was driving on a dry, straight, two lane road at the posted speed of 40mph, the car began to try to steer into oncoming traffic. I had to exert moderate force to keep the car in my lane. This continued continuously for about 1/2 mile. No low tire pressure indicat…

Uncategorized IssuesJan 7, 2023

The contol post for lights, turn signal, and high beams is too sensitive. To control the lights, you twist the top of lever. To turn on turn signals, you flip the lever up or down. To turn on brights, the lever goes forward. To turn of lights, the lever is pulled back. The is…

Steering Defects💥 CrashNov 30, 2022

Having been complaining about a noise from under the front right tire, I was initially told it was a little piece of plastic and that got cut off. I was still hear the scraping and squealing and I kept check the from right tire because I thought that's where it was coming from. I…

Transmission / DrivetrainOct 29, 2022

I had driven my wife to her school about 5 miles and headed back to my work another 5 miles when i tried to accelerate pass car I lost almost all power barely making it up a slight hill I kept going trying to make it to my house barely going 10 miles an hour. I thought the tra…

Steering DefectsAug 19, 2022

The steering wheel column does not have a lock therefore someone broke into my car and tried to steal it and destroyed it, also no alarm went off when this happened.

Engine ProblemsApr 2, 2022

I was driving 60-70 miles an hour for 45 minutes then car lost all acceleration and engine light came on. I pulled over immediately turned the car off. Turned it back on drove 1/4 of a mile and same thing happened. I pulled over turned car off and had it towed to the dealership…

Brake System💥 CrashJan 19, 2022

Vehicle failed to reduce speed effectively while trying to avoid a collision with another vehicle during a left turn, which then caused the vehicle to turn widely and collide with the curb.

Engine ProblemsJan 3, 2022

Vehicle has less than 4000 miles and throttle body had to be replaced

Brake SystemJul 23, 2021

On the way to work, I had the brake pedal pressed waiting for a traffic signal to change. After it changed to green, I released the brake pedal and depressed the gas pedal, only for the vehicle not to move forward - as if the brake was still being applied. I took my foot off the …

Source: NHTSA Complaints Database. Real owner reports for the 2021 Kia Rio.

2021 Kia Rio Recalls

2 campaigns

NHTSA recall campaigns for the 2021 Kia Rio. 2 recall campaigns are on record for this model year. Recalls are free to fix at authorized dealers, but completion status must be verified on the exact VIN.

21V936000Jan 12, 2021
SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER

22V304000May 5, 2022
STEERING:COLUMN

Compare Kia Rio Model Years

Compare complaint and recall volume across years to see whether 2021 lands in a lower-risk or higher-risk part of the model timeline.

2023202220212020201920182017201620152014

2021 Kia Rio Buying FAQ

Buyer-focused answers based on real NHTSA complaint and recall data for this model year.

Is the 2021 Kia Rio reliable?

Severe Issues. NHTSA currently shows 15 owner complaints, 2 crash-related complaints, and 2 recall campaigns for this model year. The 2021 Kia Rio shows higher complaint activity for its model-year profile, so buyers should inspect known problem areas carefully before purchase. Treat this as a model-year signal, then verify the exact vehicle's condition and history before purchase.

What are the most common problems with the 2021 Kia Rio?

#1: Uncategorized Issues (6 complaints). #2: Steering Defects (4 complaints). #3: Brake System (3 complaints)

At what mileage do problems start on the 2021 Kia Rio?

Mileage data is not available or insufficient for this model year.

How safe is the 2021 Kia Rio?

Complaint data is not the same as crash-test scoring, but it does highlight possible risk patterns. For the 2021 Kia Rio, NHTSA complaints include 2 crash-related reports and 0 fire reports out of 15 total complaints. For controlled crash-test ratings, check nhtsa.gov/ratings.

Does the 2021 Kia Rio have any recalls?

Yes. 2 NHTSA recall campaigns affect the 2021 Kia Rio. A major recall area is SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER. 2 recall campaigns are on record for this model year. Always verify open recalls by VIN because completion status varies by vehicle.

Should I buy a 2021 Kia Rio?

The 2021 Kia Rio shows higher complaint activity for its model-year profile, so buyers should inspect known problem areas carefully before purchase. Use the model-year trend to shortlist candidates, then confirm the exact vehicle condition with service records, recall status, and a VIN history report. Pay extra attention to Uncategorized Issues during inspection. Before committing, run a VIN history report to verify accidents, title brands, odometer records, and recall completion for the exact car.

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

Wider context: See the full Kia Rio reliability report with year-by-year comparison.

Owner Reliability Rating

Rate the 2021 Kia Rio based on your ownership experience.

Add your rating:

Ratings are based on owner experience and are separate from NHTSA data shown above.

Check the Exact Vehicle History Before You Buy

Model-year complaints and recalls reveal patterns. A VIN report confirms whether the exact car has accident history, title brands, mileage issues, or open recalls.