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BrakesPart report

2021 Mazda CX-30 Brakes Problems

Complaints
8about this part
Share
8%of 101 total for the year
Median mileage
26,500miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 8 complaints about the brakes of the 2021 Mazda CX-30, 8% of the 101 complaints for this model year. Where a mileage was given, the median is 26,500 miles. 4 of these say a crash was involved, according to the filers.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“On June 3rd, 2026, about 1:15 PM, I braked in the rain because there was a stopped car in front of me. The brakes did not work; the Automatic Emergency brakes did not work; the Forward Collision Warning did not work and I hit the car in front of me causing a 3 car accident. As I hit the car I saw the Forward Collision Warning come on and then go out. Unfortunately, the brakes worked after that and the Mazda Collision Center cannot find anything wrong with the brakes. I note that the 2022 and 2023 models of the same car did have recalls related to the brakes. …”

NHTSA complaint #11743896, filed 2026-06

“The accident occurred on the afternoon of Tuesday, November 14, which I reported to Enterprise, City of Falls Church, on the morning of November 15. Additionally, I provided to Enterprise email links to the many reports about breaking problems about the CX30 2021, 2022, and 2023 MAZA models and the reasons for their recall for repair. Here are the details about what happened. As I was trying to put the car in reverse from a standing position, the car, instead, lurched forward at great speed headed toward the Sun Trust bank. …”

NHTSA complaint #11555773, filed 2023-11

“The automatic braking engaged without warning and without cause. There was nothing directly in front of the car that was a possible collision threat. I suffered a neck injury as a result of the force in which the car stopped. Fortunately the driver behind me was able to stop. The car was taken to the original Mazda dealer and I was told this is a problem with my car but that they had no permanent fix, nor the ability to permanently shut off this system available until corporate got back to them. They did not provide any paperwork and stated we will call you when we have something. …”

NHTSA complaint #11475522, filed 2022-07

“The contact owned 2021 Mazda CX-30. The contact stated while attempting to park the vehicle in the parking garage at her workplace, the contact reversed and then straightened the steering wheel; however, after shifting to drive and attempting to drive 6-10 feet forward into the parking space, the vehicle unintendedly accelerated and crashed into a pillar before coming to a stop. The contact stated that the engine had revved up, and the vehicle made an abnormally loud sound before the vehicle unintendedly accelerated. …”

NHTSA complaint #11635826, filed 2025-01, 31,000 miles

“The contact owns a 2021 Mazda CX-30. The contact stated that while operating the vehicle, the interior rear mirror loosened and eventually fell from the roof of the vehicle. The cause of the failure was not yet determined, and the vehicle was not yet repaired. Additionally, while driving at an undisclosed speed, the message Critical Brake System Malfunction was displayed. The vehicle was taken to the local mechanic; however, the cause of the failure was not yet determined. The local dealer and manufacturer were notified of the failure, but no assistance was offered. …”

NHTSA complaint #11641757, filed 2025-02, 22,000 miles

Related service bulletins

Brakes: other model years

YearComplaintsShare of year
2025312%
2024618%
2023728%
202239%
202188%
2020721%

Other parts of the 2021 Mazda CX-30

Engine
49 complaints
Electrical system
14 complaints
Forward collision avoidance
12 complaints
Visibility (wipers, defrost, mirrors)
11 complaints
Other or unknown
10 complaints
Transmission and drivetrain
8 complaints
Vehicle speed control
8 complaints
Air bags
3 complaints
Fuel system
3 complaints
Seats
2 complaints
Exterior lighting
1 complaints
Lane departure
1 complaints

← All problems reported for the 2021 Mazda CX-30

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology