Mazda Recall 20V-346: Service brakes, hydraulic – caliper

Affected: 2020 Mazda CX-30, 2020 Mazda Mazda3. Filed with NHTSA on June 12, 2020, covering about 24,037 vehicles.

The problem

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.

The fix

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.

Recall details

NHTSA campaign20V-346 (20V346000)
Manufacturer number4420F
ManufacturerMazda Motor Corp.
ComponentService brakes, hydraulic › Foundation components › Disc › Caliper
Report dateJune 12, 2020
Owners notifiedJuly 24, 2020
Vehicles affected24,037
Initiated byManufacturer

Vehicles covered

Owner complaints about the brakes

Frequently asked questions

Is the recall 20V-346 repair free?

Yes. Mazda dealers will fix the problem at no cost: 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.

How do I know if my car is included?

Not every vehicle of the listed model years is affected — the recall covers 24,037 vehicles built in a certain window. Check your 17-character VIN with our VIN recall check or at nhtsa.gov/recalls.

Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.