2012 Mazda CX-9 Brakes Problems
- Complaints
- 143about this part
- Share
- 65%of 221 total for the year
- Median mileage
- 56,622miles
- Trend
- FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.
NHTSA recorded 143 complaints about the brakes of the 2012 Mazda CX-9, 65% of the 221 complaints for this model year. Where a mileage was given, the median is 56,622 miles. 4 of these say a crash was involved, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I was driving slowly about 30miph and began hearing a hissing noise when I depressed the brake pedal. Once I pulled into my driveway a small incline, and pushed the brake pedal it was very tight and stopped at a point, but would not go further, tried shifting different gears. Finally brake depressed. Hissing has continues, very stiff brake pedal”
NHTSA complaint #11365716, filed 2020-10, 54,000 miles“While pulling into my garage at low speed, my power brakes failed. I had to practically stand on the break pedal to get the vehicle to stop, barely stopping before hitting the fridge in my garage.the vehicle was towed for service and the problem diagnosed as the failure of the brake vacuum booster.”
NHTSA complaint #11351038, filed 2020-08, 81,952 miles“My break pedal feels as if it becomes stiff and I hear a hissing noise coming from the pedal. My breaks will not slow the vehicle. I have to remove my foot and reapply pressure forcefully in order for the breaks to work. It does this in reverse, going down an incline or flat surface. This happened while my child was with me. Please repuireva recall or lives may be at stake.”
NHTSA complaint #10985523, filed 2017-05, 143,000 miles“As the car was being driven the breaks became hard and unless pressed very hard it keeps going. It doesn't go down at all. Assessment shows brake booster failure. It is weird other vehicle I had ...a toyota never failed. I can't drive it.”
NHTSA complaint #11299163, filed 2020-01, 95,000 miles“We experienced what similar Mazda cx9 owners have reported: our brakes stiffened, provided resistance coupled with a hissing noise, and failed to stop the vehicle in a timely manner, despite having a full brake fluid reservoir and sufficient brake pads. Our mechanic reports failure of the master cylinder and the blower. We experienced these events suddenly and while the car was in motion.”
NHTSA complaint #10759261, filed 2015-08, 63,000 milesRelated service bulletins
- 11032103Apr 21, 2026This Service Alert supersedes the previously issued SA listed below: The changes are noted in Red. SA-011/24 02/12/24, 06/06/24, 07/29/24 DESCRIPTION Mazda has developed factory…
- 10251387Feb 12, 2024Mazda has developed factory recommended scheduled maintenance services that support all major vehicle systems. Mazda recommends dealers follow the scheduled maintenance tables as…
- 10208556Feb 23, 2022Mazda has developed factory recommended scheduled maintenance services that support all major vehicle systems. Mazda recommends dealers follow the scheduled maintenance tables as…
- 10173097Mar 12, 2020Mazda has developed factory recommended scheduled maintenance services that support all major vehicle systems. Mazda recommends dealers follow the scheduled maintenance tables as…
- 10170657Jan 8, 2020Some vehicles exhibit brake related concerns such as brake noise, brake judder or brake dragging. If you encounter a customer complaint for any one of these symptoms, refer to…
- 10153307Jan 14, 2019Mazda North American Operations has approved an additional on-car brake lathe as an option for MNAO authorized equipment. The Pro-Cut On-Car Brake Lathe has been added to the…
- 10153227Jan 10, 2019Some vehicles exhibit brake related concerns such as brake noise, brake judder or brake dragging. If you encounter a customer complaint for any one of these symptoms, refer to…
- 10153319Jan 3, 2019Some customers may report a slight clunk/bang/buzz noise or jolt from the front of the vehicle. This concern will most likely occur during the vehicles first forward movement…
- 10148003Oct 10, 2018Mazda North American Operations has approved an additional on-car brake lathe as an option for MNAO authorized equipment. The Pro-Cut On-Car Brake Lathe has been added to the…
- 10142515May 11, 2018Mazda North American Operations has approved an additional on-car brake lathe as an option for MNAOauthorized equipment. The Pro-Cut On-Car Brake Lathe has been added to the MNAO…
Brakes: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2023 | 2 | 15% |
| 2022 | 1 | 9% |
| 2021 | 4 | 10% |
| 2020 | 2 | 11% |
| 2019 | 2 | 4% |
| 2018 | 11 | 9% |
| 2016 | 11 | 10% |
| 2015 | 3 | 9% |
| 2014 | 9 | 17% |
| 2013 | 16 | 24% |
| 2012 | 143 | 65% |
| 2011 | 99 | 58% |
| 2010 | 91 | 47% |
| 2009 | 17 | 29% |
| 2008 | 30 | 17% |
| 2007 | 7 | 8% |
Other parts of the 2012 Mazda CX-9
25 complaintsAir bags
23 complaintsTransmission and drivetrain
18 complaintsVehicle speed control
11 complaintsSuspension
9 complaintsSteering
7 complaintsOther or unknown
6 complaintsElectrical system
5 complaintsFuel system
4 complaintsExterior lighting
3 complaintsElectronic stability control
2 complaintsSeat belts
2 complaints
← All problems reported for the 2012 Mazda CX-9
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 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