NHTSA campaign 21V101000 · Mazda campaign 4721B

Mazda Recall 21V-101: Tire Air Valve May Leak

NHTSA recall 21V101000 (Mazda campaign 4721B) was reported by Mazda North American Operations on February 22, 2021, with 599 vehicles potentially affected (per NHTSA). NHTSA's record lists the Mazda CX-30 and Mazda MAZDA3 for the 2021 model year. Owners were notified on April 6, 2021, per NHTSA.

Updated daily from NHTSA's recall files

Is my vehicle included?

This page lists, by model year, the vehicles NHTSA's recall record names for campaign 21V101000 in the model years try.vin imports (1995 and later); NHTSA's own record can list more. A model year on the list doesn't mean every vehicle of that year is included, and some may already have been repaired.

To see whether a specific vehicle is included and still needs the repair, enter its VIN at nhtsa.gov/recalls.

Mazda VIN check: decode a VIN to see its year, make and model.

Key facts

NHTSA campaign: 21V101000 (also written 21V-101 or 21V101)
Filed by: Mazda North American Operations
Mazda campaign number: 4721B
Report received: February 22, 2021
Potentially affected: 599 vehicles (per NHTSA)
Component: Tires — Valve
Owners notified: April 6, 2021

Repair completion: 96.66% (latest rate the manufacturer reported to NHTSA; dataset updated October 21, 2026)

NHTSA cautions against comparing completion rates across recalls or manufacturers. How try.vin reads them.

Vehicles listed for this recall

NHTSA's recall record lists these vehicles for recall 21V101000. try.vin imports model years 1995 and later, so NHTSA's own list can be longer. Model years with a try.vin recall page link to it. Build dates are NHTSA's range for a model year (per NHTSA); a vehicle built in that range is not necessarily included.

Mazda

Mazda CX-30
- 2021
Mazda MAZDA3
- 2021

All Mazda recalls

NHTSA's recall notice

As NHTSA's recall record states it for campaign 21V101000.

Defect description

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

Safety consequence

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

Manufacturer remedy

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.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

Sources

Official NHTSA notice for recall 21V101000

Campaign details come from NHTSA's recall files, which try.vin imports once a day. The plain-language subject and the completion rate come from the U.S. Department of Transportation's Recalls Data dataset. How try.vin reads recall data.