Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety.


hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
46,951 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 miscellaneous problems

miscellaneous problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2012 Mazda CX-9:

Unsubscribe any time. We don't sell/share your email.

2012 Mazda CX-9 Owner Comments

problem #3

Aug 112016


  • 60,000 miles


Brake booster failed while driving causing break ability to fail completely. Car could not stop. Really dangerous situation.

- Clarksburg, MD, USA

problem #2

May 142016


  • 44,872 miles
We have noticed the difficulty in depressing the brake pad along with the hissing noise over the past 1 month and it has progressively became stronger. Initially you brush it off thinking you are imagining it. Today on a hill there was an accident so traffic was barely moving, I started to leave more and more distance with the vehicle in front of me as it was becoming increasingly difficult to depress the brakes. Finally I hear a strange noise and then complete quiet and my teenage daughter notices too and as I release the brake to move I realize the car engine had died (the engine has never given any indication of issues before) but the engine dash lights weren't on indicating there was not power which of course means no power steering either, a quick shift to N and restart and all is fine the rest of the way home. The hissing noise and difficult depression continued however while on the hill when I did press hard enough for the brakes to respond they did so as though bypassing the anti-lock system as they would jolt into the stop. Very concerning as the distance to stop has increased, what if a person walked in front of me much less if I'm on the freeway and come upon a sudden need to stop. But here it is a Saturday evening and how and when can I deal with an obvious safety issue that clearly is repeated. I wonder how many out there have not taken the time to report, have spent much on repairs or simply traded in their vehicle to come in to the hands of some other unsuspecting consumer. Action truly is needed before someone's lives are changed forever.

- Renton, WA, USA

problem #1

Apr 152015


  • 35,982 miles
I experienced unexplained sudden acceleration while stopped at a stop light. At the time of the incident there was one car stopped in front of me and one behind me. From the onset of the incident it took just a very few seconds, probably between two and four, for the engine to rev to an extremely high speed. While this was happenings I could feel the vehicle attempting to move forward forcefully while I was applying the brakes very hard. I shifted into neutral and turned off the ignition. I then shifted into park. I turned the ignition on again and the engine continued to rev at a very high speed. I immediately shut off the engine. I decided to start the vehicle one more time. This time when I turned on the ignition the vehicle ran normally. I cautiously drove it for possibly five miles and parked it where I could have it towed to the dealership. I was asked about floor mats.the original floor mats were in the very back of the vehicle and I had weathertech mats, in the front of the car, which were attached to hooks in the floor holding then in place. The dealership did take the situation very seriously. They did indicated concern about having the vehicle on the road again. They tested the vehicle for any computer codes which might indicate what may have caused the problem and found nothing. They contacted Mazda and at the time that I sold the car back to the dealership they had not heard anything from Mazda.

- Ramsey, MN, USA

Search for these popular complaint phrases...

Not what you are looking for?