CarComplaints.com Notes: The only area of real concern for 2012 Mazda CX-9 owners is the brake booster.

In 2014, Mazda extended the warranty on the 2007-2013 CX-9 brake booster to 7 years / 90,000 miles. However this extended warranty has expired for most CX-9 owners, so buyer beware.

This Mazda CX-9 brake booster failure isn't terrible in terms of repair cost — it "only" costs $550 average to fix. However it is a safety issue when the brake booster fails as it increases stopping distance. Owners have reported having to stomp on the brake pedal, & crashes/injuries have been reported due to this CX-9 brake booster defect.

10.0

really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
14,444 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2012 Mazda CX-9 suspension problems

suspension problem

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2012 Mazda CX-9 Owner Comments

problem #9

Feb 012023

CX-9 6-cyl

  • 11,000 miles

A D V E R T I S E M E N T S

The contact owns a 2012 Mazda CX9. The contact stated that the vehicle had previously been involved in a crash due to a fractured passenger's side lower control arm. The dealer was made aware of the failure and confirmed that the vehicle had been repaired under NHTSA Campaign Number: 15V451000 (Suspension). The dealer referred the contact to the manufacturer for assistance. An independent mechanic replaced the passenger's side lower control arm; however, the contact stated that after the repair was performed, the engine rattled and the vehicle stalled. The vehicle was then taken back to the independent mechanic, who determined that the driver's side lower control arm spacers were missing and that the front and rear axles, brakes, and rear shocks needed to be replaced. Additionally, the cage bolts needed to be retightened. The vehicle was not repaired. The manufacturer was made aware of the failure, and a case was opened. The failure mileage was approximately 110,000.

- Pittsburgh, PA, USA

problem #8

Aug 162020

CX-9

  • 83,000 miles
The contact owns a 2012 Mazda CX9. The contact stated that while driving at an undisclosed speed, the vehicle shut-off with an unknown warning light illuminated. The vehicle was taken to two independent mechanics who diagnosed that water entered the vehicle and caused the corrosion of the front suspension ball joint. The dealer was not called. The manufacturer was not made aware of the failure. The vehicle was not repaired. The failure mileage was approximately 83,000.

- Potomac, MD, USA

problem #7

Feb 162017

CX-9

  • miles
The contact owns a 2012 Mazda Cx-9. the contact received notification of NHTSA campaign number: 15V451000 (suspension); however, the part to do the repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. The contact stated that the vehicle was taken to a dealer for the recall repair, but was told that parts needed to be ordered. The contact waited for at least four months with no contact from the dealer for recall repairs. The contact had not experienced a failure. Parts distribution disconnect.

- Frisco, TN, USA

problem #6

Sep 012015

CX-9

  • miles

A D V E R T I S E M E N T S

I received a letter in September 2015 regarding a recall that involved the front suspension and the dangers that could be involved, but there were no parts available at this time to fix the problem. I still haven't received notification of parts being available 6 months later. No damage has been done my vehicle as of yet however another snowy winter in Illinois has passed and the danger of "saltwater intruding into the ball joint, causing corrosion, which can result in generating looseness of the ball joint in the fitting". the result of this corrosion, according to the recall letter, can cause the ball joint and lower arm to separate causing loss of steering control and increased crash risk. I think 6 months is ample time to produce parts needed to fix these vehicles and to save lives and it is incredibly irresponsible of Mazda to not expedite this fix.

- Girard, IL, USA

problem #5

Mar 012016

CX-9

  • miles
The contact owns a 2012 Mazda Cx-9. the contact received notification of NHTSA campaign number: 15V451000 (suspension); however, the part to do the repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The contact had not experienced a failure. The manufacturer was not made aware of the issue. VIN tool confirms parts not available.

- Philadelphia, PA, USA

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problem #4

Aug 012015

CX-9

  • 0 miles
Mazda recall 8515G ( NHTSA campaign no 15V451) I called Mazda motor corporation in January 2016 regarding the above recall. I was told that if I was having a problem with the recall parts in question to take the vehicle to the nearest dealership for inspection and possible repair. I inquire as to why my vehicle was not called in for the recall repair and to my amazement I was told that they did not have enough parts to fix this problem and as soon as they become available they would be notifying customers to bring their vehicles in for repair. Recall, it has been 7 to 8 months since the NHTSA put this recall out and I have not received any correspondence from Mazda regarding the repair of my vehicle. The last correspondence was a notification letter dated September 2015 regarding the recall. I feel this is nothing more than posturing on Mazda's part. How long do you have to wait before someone gets killed !! please look into this matter someone's life could be at stake here. Thank you for your possible action in this matter.

- Hasbrouck Heights, NJ, USA

problem #3

Sep 022015

CX-9 6-cyl

  • 36,000 miles

A D V E R T I S E M E N T S

The contact owns a 2012 Mazda Cx-9. the contact heard an abnormal noise coming from the vehicle. The contact received notification of NHTSA campaign number: 15V451000 (suspension); however, the part to do the repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The failure mileage was approximately 36,000. VIN tool confirms parts not available. Updated 03/10/16

- Westfield, IN, USA

problem #2

Sep 042015

CX-9 6-cyl

  • Automatic transmission
  • miles
The contact owns a 2012 Mazda Cx-9. the contact received notification of NHTSA campaign number: 15V451000 (suspension) however, the part to do the repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was notified of the issue. The contact had not experienced a failure. VIN tool confirms parts unavailable. Updated 03/10/16

- Rochester, IL, USA

problem #1

Jul 202015

CX-9

  • miles
The contact owns a 2012 Mazda Cx-9. the contact received notification of NHTSA campaign number: 15V451000 (suspension); however, the part to do the repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The VIN was unknown. The contact had not experienced a failure.

- Ooltewah, TN, USA

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