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.


definitely annoying
Crashes / Fires:
0 / 1
Injuries / Deaths:
0 / 0
Average Mileage:
33,440 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.

2011 Mazda CX-9 drivetrain problems

drivetrain problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2011 Mazda CX-9:

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

2011 Mazda CX-9 Owner Comments

problem #8

Nov 152015


  • 48,000 miles


The contact owns a 2011 Mazda Cx-9. while driving at various speeds, the vehicle would not have adequate power to go up or down hills. The vehicle was taken to an independent mechanic where it was diagnosed that the transfer case of the vehicle failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was 48,000.....updated 03-31-16

- Kansas City, MO, USA

problem #7

Sep 202015


  • 3 miles
Hissing noise when pressing brake pedal. If feels like more force is needed to stop vehicle. Loud noise from transmission when shifting from part to drive/reverse

- Chicago, IL, USA

problem #6

Apr 092015

CX-9 6-cyl

  • 25,000 miles
I just bought an 2011 Cx-9 Mazda few weeks ago. When I was parking I noticed that every time I put the car in drive it make a sound very hard, and sometimes when putting it in reverse. It may be some problems with the transfer case. In addition, when the car is running on 2nd another weird sound. I am taking the car to the near dealer if the problem continue.

- Bronx, NY, USA

problem #5

Apr 082015


  • 33,739 miles


Traveling with family on I95 started smelling a burning odor. Later developed a distinct vibration and grinding sound. Got it home now non usable. Vehicle was previously repaired at my shop, a loss due to hurricane sandy, and as such branded. Faulkner Mazda and Mazda corporation both denied any warranty claim due to title branding even though both admitted it was a safety issue, although the service dept at faulkner did add "that anything could cause an accident". I am just lucky that it didn't grenade while on the interstate at speed with my family in the car. Corporate Mazda advised me to save my receipts in case they issue a recall in the future. Will not recommend Mazda to anyone in the future.

- Philadelphia, PA, USA

problem #4

Mar 182015

CX-9 6-cyl

  • 57,480 miles
The Mazda 2011 Cx-9 crossover SUV seems to have a defect in the power transfer unit (ptu). Mazda North american operations issued a letter to Mazda owners informing about a special service program to extend the warranty coverage for the repair of the power transfer unit (ptu) on "certain 2010-2011 Cx-9 all-wheel drive vehicles produced from July 28, 2009 through December 2, 2013." I quote the letter. On March 18, 2015, I began to experience a problem whereby my 2011 Cx-9 made a grinding and snapping sound when in reverse mode. This behavior was followed by a pungent odor in the cabin. I contacted the nearest dealership and tried to get an immediate appointment to examine the vehicle. However the dealership could not accommodate me nor expressed any awareness of the symptoms. Yet, the letter was published since last year. I contacted a local mechanic and had them inspect the vehicle and they diagnosed the problem exactly as described in the letter from Mazda. In fact, the mechanic is aware of this problem with Mazda and Lincoln brand vehicles. Currently, I am having trouble getting immediate assistance from the dealership or Mazda North american operations. I called several times to the dealership and they were unresponsive. Is NHTSA aware of this ptu defect and what was necessary to require a recall/replacement of the ptu 'prior' to inevitable failure as we experienced? thank you.

- Wake Forest, NC, USA

Search for these popular complaint phrases...

problem #3

Jan 012015


  • 67,000 miles
I have a 2011 Mazda Cx-9 and when slowing down there is a jolt when it shifts from 4th to 3rd. This seems to happen more when its cold out. It only happens when it shifts from 4th to 3rd. Its not all the time its just random.

- Virginia Beach, VA, USA

problem #2

May 172013


  • miles
2011 Mazda Cx-9. consumer writes in regards to vehicle fire caused by transmission/transfer case failure. The consumer stated the bottom of the vehicle caught on fire, it was put out before any excessive damage was done. The consumer stated prior to the fire, the vehicle started vibrating and when she attempted to drive, it would not move.

- Manalapan, NJ, USA

problem #1

Jun 072013

CX-9 6-cyl

  • 36,300 miles
The contact owns a 2011 Mazda Cx-9. the contact stated that there were fuel fumes inside the cabin of the vehicle. Additionally, the contact was driving 20 mph when the vehicle began to decelerate independently and stalled. The vehicle was taken to the dealer, who determined that the transfer case was cracked and seized. The failure was not reported to the manufacturer. The VIN was not available. The failure and current mileage was 36,300. Updated 07/30/13 the dealer replaced the transfer case. Updated 08/01/13

- Colorado Springs , CO, USA

Not what you are looking for?