News Releases

Statement On Safety Recall 4721B Of Certain 2021my Mazda3 And CX-30 Vehicles

WASHINGTON, DC. (February 23, 2021) – Mazda North American Operations (MNAO) has filed a defect notification with the National Highway Traffic Safety Administration (NHTSA) for a safety defect, which exists in certain 2021 Model Year Mazda3 and CX-30 vehicles. In the affected vehicles, air may suddenly leak from the tire air valve.

Due to an improper isolation procedure for finished wheel and tire assemblies, which do not meet manufacturing specifications, certain previously-installed tire air valve parts may have been mixed with new parts on the supplier assembly line. If a given tire air valve is installed into a wheel and tire assembly more than once, damage to the air valve sealing surfaces may occur, possibly resulting in either a slow or sudden loss of air from an inflated

A sudden air leak from the tire air valve may cause a loss of vehicle control while driving, increasing the risk of a crash. A warning lamp and warning messages in the Multi-Information Display may notify the driver of a reduction in tire pressure if this defect occurs.

Affected vehicles include the following 2021 MY vehicles built at Mazda de Mexico Vehicle Operation:

  • Approximately 26 Mazda3 units
  • Approximately 573 CX-30 units

No accidents or injuries have been reported as a result of this defect.

Affected owners will be notified by mail. Please check or for the latest updates.

Mazda North American Operations is headquartered in Irvine, California, and oversees the sales, marketing, parts and customer service support of Mazda vehicles in the United States and Mexico through approximately 620 dealers. Operations in Mexico are managed by Mazda Motor de Mexico in Mexico City. For more information on Mazda vehicles, including photography and B-roll, please visit the online Mazda media center at

Follow MNAO’s social media channels through Twitter and Instagram at @MazdaUSA and Facebook at


Tamara Mlynarczyk, Mazda North American Operations, 202-467-5092
Emily Taylor, Mazda North American Operations, 949-727-6182