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2021 Mazda Mazda3 Recalls & Complaints

1

open safety recall on record

Serious

66 owner complaints filed · Severity Index 0.27 · updated 2026-08-07

The recalls

Serious21V101000

Tires:Valve

sudden air leak from the tire air valve may cause a loss of vehicle control while driving, raises the risk of a crash.

Remedy & full details

Mazda will notify owners, and dealers will replace all four tire air valves with new parts, free of charge. The recall began April 6, 2021. Owners may contact Mazda customer service at 1-800-222-5500 Option 4. Mazda's number for this recall is 4721B.

Mazda North American Operations (Mazda) is recalling certain 2021 Mazda3 and CX-30 vehicles. Air may suddenly leak from the tire air valve.

Complaint volume

66 this model-year 7 median, same year

Volume alone is not a fault rate — popular vehicles attract more reports. Read it next to the severity mix below.

What owners reported happened

4Crashes
2Fires
1Injuries
0Deaths

Across 66 complaints. Severity Index 0.27.

Severity Index weights each complaint's reported outcome (death ×10, injury ×4, fire ×3, crash ×2) and divides by total complaints. It measures how severe reports are, not how often faults occur.

What owners report most

Engine18 · 27%Unknown Or Other7 · 11%Electrical System6 · 9%Air Bags4 · 6%Service Brakes4 · 6%Forward Collision Avoidan…4 · 6%Power Train3 · 5%Lane Departure · Blind S…2 · 3%
  1. Engine — 18 reports
  2. Unknown Or Other — 7 reports
  3. Electrical System — 6 reports
  4. Air Bags — 4 reports
  5. Service Brakes — 4 reports
  6. Forward Collision Avoidance: Automatic Emergency Braking — 4 reports
  7. Power Train — 3 reports
  8. Lane Departure: Blind Spot Detection — 2 reports
  9. Forward Collision Avoidance: Warnings — 2 reports
  10. Lane Departure: Assist — 2 reports

What to do

  1. Find your 17-character VIN on the driver's door jamb or the base of the windscreen.
  2. Check it against NHTSA's official lookup at nhtsa.gov/recalls — the authoritative record for your exact car.
  3. Book the repair with any franchised dealer. Safety recall work is free, with no time limit and regardless of who owns the car now.

Other model years

2004 (3) · 2005 (3) · 2006 (2) · 2007 (3) · 2008 (3) · 2009 (4) · 2010 (3) · 2011 (2) · 2012 (1) · 2013 (1) · 2014 (4) · 2015 (4) · 2016 (6) · 2017 (2) · 2018 (4) · 2019 (6) · 2020 (2) · 2021 · 2022 · 2023 · 2024 (3) · 2025 (1)

Numbers in brackets are open recall campaigns for that year.

Questions

Does an open recall mean the car is unsafe to drive?

Not usually. NHTSA issues a "do not drive" or "park outside" advisory when a defect is dangerous enough to keep you out of the car — those are flagged Critical above. Everything else should be repaired promptly but is not an immediate stop-driving order.

Do I pay for recall repairs?

No. Federal law requires the manufacturer to fix a safety recall free of charge, including parts and labour, whether or not you are the original owner.

Why are there complaints but no recalls?

Complaints are unverified reports filed by owners. They can prompt an investigation, but many never become recalls — either the fault isn't safety-related or it isn't widespread.

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