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BrakesPart report

2015 Mazda CX-9 Brakes Problems

Complaints
3about this part
Share
9%of 35 total for the year
Median mileage
16,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 3 complaints about the brakes of the 2015 Mazda CX-9, 9% of the 35 complaints for this model year. Where a mileage was given, the median is 16,000 miles.

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.

“We have 2015 Mazda CX-9 with 8400 miles that has a leak on the break master cylinder. Which the dealership was denying to be a leak because they saw an old dry debris on top of the fluid depot. But have it checked to an outside mechanic because we've been having a shimmy problem when braking for moths and they still can't figure as to what is wrong with our vehicle. All they are saying is they cannot duplicate the problem that I am saying. …”

NHTSA complaint #10851060, filed 2016-03, 8,400 miles

“My brake peddle began hissing and my vehicle does not want to stop when in motion, I took my vehicle to a Mazda dealership and they stated it was the brake booster which is a problem Mazda has been having, but my vehicle is not in the years specified in the warranty extention. The dealership stated Mazda is not willing to help or fix the issue, and that we would have to pay out of pocket. It is the exact same problem the earlier models have been experiencing and are being fixed and mine is not. Maxda is aware of this defect and will not help me. …”

NHTSA complaint #11155966, filed 2018-12, 56,000 miles

“The front brakes make a grinding noise when repeatedly applying the brakes when going downhill or slowing repeatedly from speeds of 65 or so. I believe the brake parts become hot and create something google searches call judder . I have had the steering will start shaking as well. After repeated requests to Mazda corporate and visits to two dealers, Mazda claims the brakes work as designed. One service manager at browning Mazda stated the front rotors are too small to stop a car of this weight, but this statement is not written. …”

NHTSA complaint #11004679, filed 2017-07, 16,000 miles

Related service bulletins

Brakes: other model years

YearComplaintsShare of year
2023215%
202219%
2021410%
2020211%
201924%
2018119%
20161110%
201539%
2014917%
20131624%
201214365%
20119958%
20109147%
20091729%
20083017%
200778%

Other parts of the 2015 Mazda CX-9

Engine
17 complaintsOther or unknown
9 complaintsTransmission and drivetrain
3 complaintsAir bags
2 complaintsExterior lighting
2 complaintsVisibility (wipers, defrost, mirrors)
2 complaintsElectrical system
1 complaintsElectronic stability control
1 complaintsEngine cooling
1 complaintsFuel system
1 complaintsSeat belts
1 complaintsSeats
1 complaints

← All problems reported for the 2015 Mazda CX-9

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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