Vehicle recall 20V346000 · June 12, 2020
Mazda CX-30 and Mazda3
The front brake caliper mounting bolts may not have been tightened properly during assembly, possibly allowing the calipers to loosen.
Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.
- Summary
- 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.
- Consequence
- 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.
- Remedy
- 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.
- 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.
Recall details
- NHTSA campaign
- 20V346000
- Reported to NHTSA
- June 12, 2020
- Filed by
- Mazda North American Operations
- Manufacturer campaign
- 4420F
- Owner notification
- July 24, 2020
- Vehicles potentially affected
- 24,037
- Initiated by
- the manufacturer
- Components
- Service brakes, hydraulic › Foundation components › Disc › Caliper
Vehicles covered
As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.
- Mazda CX-30 (2020): 2020
- Mazda Mazda3 (2020): 2020
Has your Mazda been repaired?
Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.
NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. Recall repairs are free.