Front brake caliper bolts may loosen and fall off
Defect 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.
Safety 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.
Corrective Action
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.
Similar Recalls
Other recalls from Mazda North American Operations or involving Service Brakes, Hydraulic.
FAQ: Recall 20V346000
Your rights, the repair process, and what each field on this page means.
What is recall 20V346000?
NHTSA recall 20V346000 was issued by Mazda North American Operations on June 12, 2020. It addresses: Front brake caliper bolts may loosen and fall off. The recall affects approximately 24,037 vehicles, with the defect involving the Service Brakes, Hydraulic component.
How do I get this recall repaired?
Contact any authorized Mazda North American Operations dealer and reference NHTSA recall ID 20V346000 or the manufacturer campaign number 4420F. Under federal law, the repair is completely free regardless of vehicle age or owner history.
Is my vehicle included in this recall?
The only way to confirm is to look up your 17-character VIN at nhtsa.gov/recalls. NHTSA's tool will tell you if VIN-by-VIN this exact recall applies.
How long do I have to get a recall repair done?
There is no expiration on most federal safety recalls. Even if your vehicle is years old and you bought it used, the manufacturer is required to perform the repair at no cost.
Where does the data on this page come from?
All information on this page is sourced directly from the U.S. Department of Transportation public dataset for NHTSA recalls. Last refreshed: 2026-05-22. For the most current official notice, visit nhtsa.gov/recalls.