The problem
Mazda North American Operations (Mazda) is recalling certain 2021 Mazda3 and CX-30 vehicles. Air may suddenly leak from the tire air valve.
The risk
A sudden air leak from the tire air valve may cause a loss of vehicle control while driving, increasing the risk of a crash.
The fix
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.
Recall details
| NHTSA campaign | 21V-101 (21V101000) |
|---|---|
| Manufacturer number | 4721B |
| Manufacturer | Mazda Motor Corp. |
| Component | Tires › Valve |
| Report date | February 22, 2021 |
| Owners notified | April 6, 2021 |
| Vehicles affected | 599 |
| Initiated by | Manufacturer |
Vehicles covered
Owner complaints about the wheels & tires
Frequently asked questions
Is the recall 21V-101 repair free?
Yes. Mazda dealers will fix the problem at no cost: 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.
How do I know if my car is included?
Not every vehicle of the listed model years is affected — the recall covers 599 vehicles built in a certain window. Check your 17-character VIN with our VIN recall check or at nhtsa.gov/recalls.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.