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Mazda CX-9 knocking problems

15 of the 1,495 owner complaints about the Mazda CX-9 describe engine knocking or ticking, most of them for the 2010 model year.

owner complaints
15
worst model year
2010
typical mileage
22,500
Is there a fix? No recall or service bulletin covers this area of the car yet.

By model year

  • 2018
    2
  • 2017
    2
  • 2015
    1
  • 2011
    1
  • 2010
    5
  • 2008
    4

What owners say

Filed Dec 11, 2024 · Steering · PA

Steering makes knocking noises when turning. It happened suddenly with no damage to car to cause it. It was fine prior to parking, when the car was restarted and the wheel was turned knocking noise started. Mechanic found there is a tsb for this problem but no recall.

Filed Apr 7, 2023 · Engine · PA

Coolant leak at cylinder head. It is available for inspection. Driving on the highway and the car overheating light came on. Yes it has been reproduced and diagnosed as part of the TSB 01-013/21. No warnings, no notice of leaks before this happened. Noticed this in January - and thought it was just a one off and had the coolant topped off. Nothing happened until a month later that is when I took it to the mazda dealer. Safety issue as no one knows about it until their light comes on and they take it to the dealer to look at. Having this happen in the middle of nowhere on a highway with three small kids is a nightmare. This issue needs to be investigated. It is definitely a safety issue. It is shocking to know that Mazda has known about this for a couple years now based on the date of the TSB. A letter, at the very least, should have been sent out to all owners. Instead they let us all sit with a ticking time bomb that will be cost prohibitive to fix.

Filed Jul 16, 2022 · Suspension · CT

I purchased this vehicle with 19K miles on July 31, 2020. I noticed on April 12, 2022, that there was a knocking noise coming from the left front suspension after leaving a Mazda dealership for an oil change. I called Mazda service and was told they only did an oil change. I have put 4 brand new tires and have replaced the front/back brakes, rotors and still hear noise going over uneven pavement. I brought it to my own mechanic twice and he hears the noise but informed me that he cannot order any suspension parts at all for Mazda CX9. He said Mazda are forcing Mazda customers to go to a Mazda dealership. He called 5 different places to purchase strut. suspension and was told they had none. He also said Mazda has a special wrench to work with having to do with suspension and he cannot get one. My mechanic had my vehicle for 3 days and said it's definitely a suspension issue. My Mazda only has 35K miles. In 2 years, I have only driven 16K (8K) per year. There is no way a suspension should go after only 35K miles. I am not off roading or abusing the vehicle. Can't NHSTA assist with this issue? This is very serious. I am afraid to drive this Mazda now.

Filed Apr 28, 2022 · Engine · MA

2015 Mazda CX-9 with 93k miles: while driving in traffic, check engine light suddenly came on, the car began to shudder as I heard a loud knocking noises coming from under the hood, and then a sudden loss of power while trying to navigate through a busy intersection while trying to make a left turn left myself in danger of almost being struck from the vehicle behind me and an oncoming vehicle from the opposite direction due to me stalling out in the middle of an intersection. The water pump (unbeknownst to myself and apparently many others) is located inside of the engine and behind the timing belt components failed without showing any prior signs of failure due to the water pump being hidden inside of the engine. The coolant had been leaking into the oil pan and mixed with the oil but because the water pump was purposely hidden inside the engine NO leaks of coolant (which would have been the early warning tell-tale sign of a problem) were visible. This faulty design caused a catastrophic failure of my engine which has been verified by a Mazda dealership and the engine had to be replaced at my cost. Although there were no injuries or deaths in my case, it does not nullify a faulty design and component of a vehicle putting peoples safety at risk when it is a well known industry fact that Mazda knowingly continued to manufacture this faulty design and use it in their vehicles.

Filed Sep 12, 2021 · Engine, Transmission · PA

When getting off highway engine began to knock. Engine stalled and would not restart. Upon inspection the water pump was found to have failed and leaked engine coolant into oil. This caused engine to have a complete failure. No check engine light illuminated but when car was scanned multiple codes were found. The car was also found to have a bad Transfer Case.

Filed Apr 4, 2021 · Brakes, Driver assistance · 225 miles · KY

Sometimes the blind signal works sometimes it doesn't sometimes it blinks on the screen and when switching lanes, brakes keeps going out ball joint keeps popping hard shift or knock in reverse and when placed in park had repair done several times. Dvd wires keeps going out/shortage m. Sometimes seat belt blinker work and sometimes it doesn't

Filed Apr 4, 2021 · Engine, Suspension · 235 miles · KY

Knock or hard shift in park as well as in reverse keeps burning oil had everything flushed replaced all fluids valve cover gaskets spark plugs etc

Filed Oct 26, 2018 · Suspension · NC

Hearing a knocking noise every time I hit an uneven pavement and bump on front suspensions. Also there is a knockick sound coming from back everytime I break or starts to accelerate from long stop.

Filed Jul 22, 2018 · Engine · 108,000 miles · MA

Car was always serviced regularly. One day I was about to get on a busy highway into boston just before rush hour, when my car suddenly made a loud knocking noise in the engine. I immediately pulled over and then the car shut off. No lights ever came on beforehand and no leaking of fluids ever happened before incident. Had it towed to mazda dealer, who at first told me they wouldn't be able to even look at it for 6 days. Friend worked there and got mechanics to look at it right away. They said the water pump was gone and it would cost $3500 to fix it. The worst part of it was, that according to the dealership, they know that there is a flaw with where the water pump is located in the engine, and that because of this the engine was most likely gone as well. In their words, they have replaced many water pumps in these same situations over the years, and only one car didn't need a new engine. They recommended fixing the water pump, then putting in a new engine--$10,000 worth of work. We bought this car certified pre-owned from a dealership. It only had 108,000 miles on it and the extended warranty had just ended 8 months before. I have numerous other cars in my lifetime and never have I had to replace an entire engine, just because the water pump was gone! This car should have been worth about $9k-$11k for resale, and instead mazda wanted to give us $2k towards a down payment for leasing another of their cars. They gave us a rate that they claimed was a special one, however, I found out I could get an even better one online myself! When we called them on this and said we were tired of dealing with this, they told us they wouldn't talk with us anymore. Very disappointing to a family that carefully watches its money and budgets for emergencies, but weren't prepared to need an entirely new car before the other was even paid for! So unfair!

Filed Mar 18, 2015 · Steering, Suspension · 112,080 miles · NY

I had been hearing a knocking noise in my car when I went to make left or right hand turns for approximately a week. After having my mechanic investigate he took a look at the ball joints, they are 'non-serviceable,' which means they are a sealed unit. He said from what he could tell they were fine. Later that day I attempted to pull out of a parking space. My wheels were spinning in the snow, I got out and took a look and my front left tire was off! The ball joint was no longer attached the car. The only thing securing the wheel to the car was the tie rod. After having it towed to my garage both lower control arms were replaced on the vehicle (one per side) along with the cv joint. They were replaced with mazda parts. Inspection on the passenger right side revealed there was barely any grease in that ball joint. I had luck on my side that day otherwise I am certain someone would have died.

Related recalls

No recalls on record for this model year.

Questions about the Mazda CX-9 knocking

Which Mazda CX-9 years have engine knocking or ticking problems?

The model years with the most reports are 2010 (5 complaints), 2008 (4 complaints) and 2017 (2 complaints).

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