2020 Mazda CX-30, 2020 Mazda MAZDA3 Recall: Front brake caliper mounting bolts may not have been tightened properly…

NHTSA campaign 20V346000 · Service Brakes, Hydraulic · filed Jun 12, 2020 · verified Jul 30, 2026

Units reported

24K

Manufacturer

Mazda North American Operations

Risk

Crash / injury

Owner letters

Mailing began Jul 24, 2020

The defect

Mazda North American Operations (Mazda) is recalling certain 2020 CX-30 and Mazda3 vehicles. The front brake caliper mounting bolts may not have been tightened properly during assembly, possibly allowing the calipers to loosen.

The risk

Loose brake calipers can reduce braking performance or interfere with wheel rotation, affecting vehicle handling. Either of these scenarios can increase the risk of a crash.

Check whether your specific vehicle is affected

Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.

Check VIN on NHTSA →

The fix — what to do

Mazda will notify owners, and dealers will inspect the front brake caliper bolts, tightening them as necessary. If bolts are missing, the affected brake caliper will be replaced. Repairs will be performed free of charge. The recall began July 24, 2020. Owners may contact Mazda customer service at 1-800-222-5500, Option 4. Mazda's number for this recall is 4420F.

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.

Affected vehicles

Make	Model	Model years
Mazda	CX-30	2020
Mazda	MAZDA3	2020

Related recalls

More Mazda CX-30 recalls

Other campaigns involving Mazda vehicles

All Mazda CX-30 recalls → · All Mazda recalls →

Source: NHTSA recall database, campaign 20V346000 (manufacturer number 4420F). Data last verified Jul 30, 2026.