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2012 Mazda CX-9: sudden unintended acceleration

5 of the 221 complaints about the 2012 Mazda CX-9 describe sudden unintended acceleration.

owner complaints
5
of this car's complaints
2%
typical mileage
56,000
recalls
0
Is there a fix? 2 service bulletins cover this area of the car. See below

Sudden unintended acceleration by model year

  • 2021
    1
  • 2018
    1
  • 2016
    1
  • 2014
    1
  • 2012
    5
  • 2011
    1
  • 2010
    2
  • 2008
    1

What owners say

Filed Feb 22, 2021 · Acceleration · 112,000 miles · NY · crash

Tl* the contact owns a 2012 mazda cx-9. The contact stated that while driving approximately 5 MPH while pulling into a parking space, the vehicle suddenly experienced unintended acceleration and drove forward crashing into a wooden seating bench which was pushed into a building. During the incident the drivers foot was pressing the brake pedal. No injuries were reported. A police report was taken at the scene and the vehicle was towed away. The cause of the failure was not yet determined. The manufacturer and local dealer was not notified. The failure mileage was 112,000. The VIN was not available.

Filed May 10, 2019 · Acceleration · 56,000 miles · VA · crash

I was turning right into a parking space with my foot on the brake, when the car suddenly accelerated. The engine revved up and the car darted forward. For a split second I lifted my foot to make sure I was not pressing on the accelerator, and immediately pushed back down on the brake as hard as I could; the car continued to speed forward. Instinctively I kept the wheel turned to the right to avoid crashing into the building in front of me as the car jumped the curb, but I hit 2 parked cars. Once I was almost stopped by hitting the 2 parked cars, I quickly turned the key off and put the car in park. I have never experienced this issue before; and let me tell you, I was terrified. I have pictures that show tire marks either from the cars acceleration or dragging the back wheels from pushing on the brake.

Filed Sep 23, 2017 · Brakes · 77,000 miles · WA

Hissing sound when braking in motion or parked. When driving up to an intersection after exiting the freeway about 20 MPH car would not stop no matter how hard I stepped on the peddle. Luckily I was able to slow before hitting the car in front of me. When stopped at a light car lunged forward while my foot was on the brake. This happened again while I was waiting for my daughter at school. It lunged up and nearly hit the car in front of me! Scariest thing in the world to not be able to brake!!

Filed Jan 21, 2016 · Acceleration · 41,010 miles · TX

Unintended acceleration in parking lot. Car was in drive, foot lightly on brake waiting on car in front to vacate parking spot. Engine suddenly surged and transmission made strange sound. Barely avoided running over an elderly pedestrian. This is about 4-5 time the car has done this in the last 6 months usually while waiting in a line of cars with foot on brake.

Filed May 12, 2015 · 35,982 miles · MN

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.

Service bulletins that may apply

Related recalls

No recalls on record for this model year.

Questions about the 2012 Mazda CX-9 sudden acceleration

Is sudden unintended acceleration a common problem on the 2012 Mazda CX-9?

5 of 221 owner complaints about the 2012 Mazda CX-9 (2%) mention sudden unintended acceleration. The model year with the most reports is 2012.

Is there a recall or service bulletin for this on the 2012 Mazda CX-9?

There are 0 recalls and 2 service bulletins for the same area of the car. Check them below with your VIN.

Other symptoms on the 2012 Mazda CX-9

Stalling 21Brake failure 18Spongy pedal 14Grinding brakes 13Engine failure 7Jerking 7Ball joint 5Check engine light 5Power steering loss 5

All model years of the Mazda CX-9

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