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2011 Mazda CX-9 Problems, complaints & recalls

Owners have filed 171 complaints about the 2011 Mazda CX-9 with NHTSA, most often about the brakes (99) and the transmission & drivetrain (25). Those complaints describe 7 crashes, 3 fires and 2 injuries. It is covered by 4 recalls, the latest in October 2019 for the inflator module. For comparison, the 2010 has 195 and the 2012 has 221.

NHTSA data checked

FFar more problems than a typical CX-9 year, for its age

#63 most complained-about 2011 vehicle

Complaints
171
Recalls
4
Crashes
7
Fires
3
Injuries
2
Deaths
0

Most common 2011 Mazda CX-9 problems

Share of all 171 complaints. One complaint can name more than one area. Tap an area for its complaints and recalls.

2011 Mazda CX-9 recalls 4

Recall repairs are free. Your dealer fixes them whether or not you bought the car there - check your VIN at nhtsa.gov/recalls to see if yours is done. What to do

Air bags: inflator module

19V78200069,879 vehicles affected

Do not drive
The problem
Mazda North American Operations (Mazda) is recalling certain 2007-2012 CX-7, CX-9, and 2009-2012 Maza6 vehicles. These vehicles had their passenger frontal air bag inflators previously replaced under a prior recall using inflators of the same design. The inflators may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, temperature and temperature cycling.
The risk
An inflator explosion may result in sharp metal fragments striking the driver or other occupants resulting in serious injury or death.
The fix
Owners are advised not to drive their vehicles until the repair has been performed. Mazda will notify owners, and dealers will replace the front passenger air bag inflator with an alternate one, free of charge. The recall began December 3, 2019. Owners may contact Mazda customer service at 1-800-222-5500, option 4. Mazda's number for this recall is 1317F. Note: This recall supersedes recalls 16V356 and 17V012.

Air bags: inflator module

18V717000155,436 vehicles affected

Do not drive
The problem
Mazda North American Operations (Mazda) is recalling certain 2014-2015 Mazda CX-9 vehicles sold, or ever registered in the states of Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina, Texas, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands (Saipan), and the U.S. Virgin Islands or "Zone A." Additionally, unless covered in "Zone A," Mazda is recalling certain 2011-2013 Mazda6, 2011-2012 CX-7, and 2011-2015 CX-9 sold, or ever registered in the states of Arizona, Arkansas, Delaware, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, West Virginia and the District of Columbia, or "Zone B." Additionally, unless covered in Zone A or Zone B, Mazda is recalling certain 2010-2013 Mazda6, 2010-2012 CX-7, and 2010-2015 CX-9 vehicles ever registered in the states of Alaska, Colorado, Connecticut, Idaho, Iowa, Maine, Massachusetts, Michigan, Minnesota, Montana, New Hampshire, New York, North Dakota, Oregon, Rhode Island, South Dakota, Utah, Vermont, Washington, Wisconsin, and Wyoming or "Zone C." These vehicles are equipped with certain air bag inflators assembled as part of the passenger frontal air bag modules used as original equipment or replacement equipment. In the event of a crash necessitating deployment of the passenger frontal air bag, these inflators may explode due to propellant degradation occurring after long-term exposure to absolute humidity and temperature cycling.
The risk
An inflator explosion may result in sharp metal fragments striking the driver or other occupants resulting in serious injury or death.
The fix
Mazda will notify owners, and dealers will replace the front passenger air bag inflator with an alternate inflator, free of charge. The recall began November 9, 2018. Owners may contact Mazda customer service at 1-800-222-5500, Option 4. Mazda's number for this recall is 1317F.

Air bags: inflator module

17V429000205,377 vehicles affected

Do not drive
The problem
Mazda North America Operations (Mazda) is recalling certain 2009-2011 Mazda6, and 2007-2011 CX-7 and CX-9 vehicles. These vehicles are equipped with certain air bag inflators assembled as part of the passenger frontal air bag modules, and used as original equipment or replacement equipment. In the event of a crash necessitating deployment of the front air bags, these inflators may rupture due to propellant degradation occurring after long-term exposure to absolute humidity and temperature cycling.
The risk
An inflator rupture may result in metal fragments striking the vehicle occupants resulting in serious injury or death.
The fix
Owners are advised not to drive their vehicles until the remedy is performed. Mazda will notify owners, and dealers will replace the passenger frontal air bag inflator with an alternate inflator, free of charge. The recall began on August 30, 2017. Owners may contact Mazda customer service at 1-800-222-5500. Mazda's number for this recall is 1317F. Note: This recall supersedes recall 16V356 and all vehicles that were not remedied under that campaign are now covered by this one.

Suspension: lower ball joint

15V451000193,484 vehicles affected

The problem
Mazda North American Operations (Mazda) is recalling certain model year 2007-2014 CX-9 vehicles manufactured October 24, 2006, to December 28, 2013. The affected vehicles have front suspension ball joints that may corrode from water leaking into the fitting.
The risk
Over time, the ball joint corrosion may result in the front lower control arm separating from the ball joint, causing a loss of steering control and increasing the risk of a crash.
The fix
Mazda will notify owners, and dealers will replace both the left and right lower control arms, free of charge. The recall began on September 14, 2015. The recall will begin with model year 2007-2009 vehicles registered in Connecticut, Delaware, Illinois, Indiana, Iowa, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, Virginia, Washington D.C., West Virginia, and Wisconsin. The second phase will be for model year 2010-2014 vehicles in the same states. Finally, all remaining vehicles will be remedied. Owners may contact Mazda customer service at 1-800-222-5500. Mazda's number for this recall is 8515G.

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171 complaints about the 2011 Mazda CX-9

Newest first, as filed with NHTSA by owners. Page 1 of 7.

Electrical system

Odometer Fraud. The contact purchased a 2011 Mazda CX-9. The vehicle was a private sale. At the time of purchase, the mileage was 109,000. A mileage discrepancy was discovered when a Been Verified report indicated that the mileage was 294,000 in 2024. The contact stated that the seller informed him that she and her fiancé had replaced the cluster gauge.

Filed Incident Electrical systemNHTSA 11772658
SuspensionTransmission & drivetrain

The front driver-side lower ball joint suffered a catastrophic structural failure and sheared completely apart while moving. This vehicle was previously serviced under Safety Recall Campaign 15V451000 / Mazda Recall 8515G for this exact defect. The recall remedy part failed a second time, collapsing the front wheel assembly, ripping the CV axle completely out of the transmission casing, causing a hazardous transmission fluid spill, and leaving the vehicle stranded and immobilized in the middle of a live roadway in the dark

Filed Incident Suspension · Power trainNHTSA 11747329
AirbagsAcceleration & cruise controlCrash

The contact owns a 2011 Mazda CX-9. The contact stated that while attempting to park the vehicle at a slow speed in the driveway, the vehicle suddenly experienced unintended acceleration, lurched forward, and crashed into a tree before coming to a stop. The contact was unable to stop the vehicle during the sudden unintended acceleration. During the failure the vehicle sustained front end damages, but no air bags had deployed. No injuries were reported. The cause of the failure was not yet determined. The contact...

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stated that twice in the day before the unintended acceleration, the vehicle jerked forward in traffic however, the contact attributed the issue to the brake pedal not being firmly depressed or the clutch not properly engaged while shifting gear. The local dealer was notified of the failure, but no assistance was offered. The manufacturer was not yet contacted. The failure mileage was 173,000.

Filed Incident Air bags · Vehicle speed controlNHTSA 11677734
Airbags

While driving the side airbags exploded and I had to stop in the middle of the street, get vehicle towed to mazda dealer in Alpharetta, GA Now, im without a vehicle. What do I do now?

Filed Incident Air bagsNHTSA 11673826
SuspensionBody, doors & structure

The contact owns a 2011 Mazda CX-9. The contact stated that while driving at an undisclosed speed and making a turn, the contact lost control of the vehicle, and the front driver's side suspension lowered to the ground. The vehicle was towed to an independent mechanic, who determined that the subframe was severely rusted, causing the control arm to detach. The contact was informed that the subframe needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 125,000.

Filed Incident Suspension · StructureNHTSA 11658375
Transmission & drivetrain

I had an issue with the AWD not engaging and the 4x4 light illuminating when driving on snow and ice. No indicators when driving under normal conditions. I had no traction and had difficulty maintaining control of the vehicle while driving at speeds less than 25 mph. I had difficulty gettting momentum from a stop as the tires were spinning and engaging tracion. I took the car into a Mazda dealership for a full circle inspection and found that the 4x4 light was illuminating due to worn-out splines connecting the...

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transfer case. The technician was able to spin the driveshaft, indicating the splines are damaged and need to be replaced. Recommendations were to replace the transmission and transfer case with a repair estimate of $5469.61. Additionally, the technician observed some seeping of oil coming from the tiing cover and reccommends re-sealing it as well as replacing the water pump ( another known failure issue in which Mazda is aware of). Cost estimate of $4319.78. The technician also observed a crack in the right rear differential mount with a repair cost of $442.10. In short, Mazda knew about all these problems. They issued a warrenty extention from my research back in 2014 but never issued any recalls. In short, I didn't own this vehicle in 2014, I purchased in 2016. I was never aware of any warrenty extentions to include these issues and if I was aware, I would have had the services done for repairs. My safety as well as my family's and others are at risk if I lose control of the vehicle due to the AWD not engaging when needed.

Filed Incident Power trainNHTSA 11631793
Brakes

Brake booster failure. The power assisted braking has stopped working. There are no leaking vacuum hoses and the check valve is working. The brake pedal travels to the floorboard.

Filed Incident Service brakesNHTSA 11620856
Engine & cooling

Driving kids to school a few months ago. Car started to smell like burning rubber. I thought it was the garbage truck ahead of us. As we turned the corner 2 blocks later, the car dead stopped and we all went flying forward. It jerked so hard, we are lucky our necks didn't snap. I put the car in park and turned it off. I waited a few minutes as I was too worked up, and started the car again. We got about 50ft before a very loud noise began, almost as if something was dragging underneath. I stopped, and had it towed...

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home. I then had it towed to mechanic. They said bad TRANSFER CASE & DRIVE SHAFT. - TRANS PAN GASKET. I am a single mom with no money to afford to have it fixed in fear of it going bad again. They quoted me 3,500 here in PA.

Filed Incident EngineNHTSA 11546714
Brakes

The contact owns a 2011 Mazda CX-9. The contact stated while driving 20 MPH, there was an abnormal sound coming from the brakes. The contact stated that the brake pedal was firm and difficult to depress while attempting to stop the vehicle. The vehicle was not diagnosed or repaired. The manufacturer was contacted, and a case was filed. The failure mileage was 67,000.

Filed Incident Service brakesNHTSA 11506010
Brakes

Braking trouble recent in weeks in 2011 Mazda CX-9 vehicle. Had mechanic (Euro Motorsports in Chagrin Falls OH) check it out. Turned out to be a faulty Brake Booster. Mechanic test drove car; braking failed and he almost rear-ended another vehicle. He found on line a Mazda service notice dating from April 4, 2014 called SSP93. Mazda issued an extended warranty of 7 years or 90,000 miles, whichever came first, to have defective part replaced by an improved part. But we were never informed by Mazda of Bedford,...

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where we bought the vehicle. Currently, our vehicle has about 83,000 miles. Never knew there was a problem until recent trouble with the braking. There are thousands of CX-5, Cx-7, and Cx-9 vehicles in operation in U.S. right now; probably many owners have no idea there is a brake defect in their vehicles that could cause a serious accident, potentially fatal. Mazda should have done a recall in 2014, not an extended warranty. Although Brake Boosters are supposedly good for at least 150,000 miles of driving, our brake failure at around 83,000 miles proves otherwise. NHTSA should order Mazda to recall all vehicles with the defective brake part and replace them at Mazda's expense, probably hundreds of dollars each time. We do not want to have our brake booster replaced by our regular Euro Motosports mechanics because a recall must typically be repaired by the dealer. We already filed a complaint with State of Ohio Attorney General's office, but their people say the complaint must first go through BBB. No urgency on their part at all, even when informed potentially fatal flaw in the brakes. To avoid dangerous accidents, NHTSA should act more swiftly. Thanks.

Filed Incident Service brakesNHTSA 11487622
Electrical system

The front door windows no longer work. Most recently, the drivers side back door will NOT open. The lock is completely jammed - will not open or shut, which is a safety hazard for my child. The plastic parts in this car are failing and putting my family at risk.

Filed Incident Electrical systemNHTSA 11480657
Engine & cooling

Defective water pump located inside the engine that when failure occurs can cause coolant to leak into engine causing complete engine failure. This is a major safety hazard due to the fact that these cars with defective water pumps can break down with very little warning in the middle of a freeway! I have contacted Mazda who refuses to do anything due to it being outside warranty but will not acknowledge the safety concern sudden engine failure can cause on a perfectly maintained car. In California there is...

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currently a lawsuit against Mazda for this issue and hundreds of other Ford and Mazda owners who have been caught in very dangerous situations due to this water pump failure issue. The situation we were involved in could have gone very differently and that was my family in the vehicle that Mazda seems to care about a couple thousand dollars more then the value of life... is just ridiculous! Please do the research yourself so no one has to loose their life over this.

Filed Incident EngineNHTSA 11440057
Transmission & drivetrainEngine & cooling

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 Incident Power train · EngineNHTSA 11432665
Engine & cooling

The contact owns a 2011 Mazda CX-9. The contact stated while driving 60 mph, upon approaching oncoming traffic, the vehicle unexpectedly shut-off. The contact was able to restart the vehicle and pulled the vehicle off to the shoulder. The contact stated that upon restarting the vehicle, the check engine warning light illuminated. Due to the failure and the warning light, the contact had the vehicle towed to an independent mechanic. Upon inspection of the vehicle, the mechanic informed her that coolant had leaked...

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into the oil cylinder and they referred her to a dealer for assistance. The contact then had the vehicle towed to the dealer where they diagnosed the vehicle with a defective water pump as well as engine failure. The manufacturer was also notified of the failure and stated that the failure was caused due to poor maintenance. No further assistance was provided. The vehicle had yet to be repaired and remained in the possession of the dealer. The failure mileage was approximately 144,000.

Filed Incident EngineNHTSA 11428032
Brakes

Sirt: I purchased my 2011 mazda cx 9 from my close friend [[redacted]] on dec.05 Of 2014! [[redacted]] had not been issued a special services program about the brake booster! Well I never received this info either? In fact I had two recall that were taken care of by the local mazda dealer here in thousand oaks calif. This known brake booster detonation has been known by mazda.Iot is a very dangerous condition and is not to safe to drive the car at all- I will not drive the car and seethe original matter should have...

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been let it be known to myself and feel the matter should be addressed asap by mazda -thank you [[redacted]] adding backing -very hard brake - when driving it had to really stand hard on the brake to stop car b! All indications point to a brake booster failure ! To summarize io was never notified by mazda about the special service program for the repair of this extremely unsafe brake problem! Information redacted pursuant to the freedom of information act (foia), 5 u.S.C. 552(B)(6).

Filed Incident Service brakesNHTSA 11406762
SteeringEngine & cooling

WATER PUMP LEAKING IN ENGINE MIXING WITH OIL

Filed Incident Steering · EngineNHTSA 11405170
Airbags

I purchased a vehicle from a buy here pay here and later realized after two weeks of having the car that has a recall for the airbag on the passenger side...But the car was sold as is from auto sales in buford ga

Filed Incident Air bagsNHTSA 11396246
Transmission & drivetrain

While driving the car on a county road, with the speed under 40 mph, and following the bend in the road to lead to getting on the highway, the car jerked forward as if I hit something. As I continued to drive, the car was making loud clinking sounds and was jerking in motion. No warning lights went on. While attempting to continue to drive, clanging noises could be heard and the car continued to jerk forward. The car was unable to be driven. After having it towed to my mechanic, it was determine the problem was...

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the transfer case. The splines between the transmission and transfer case had been eaten away by rust. The seal had not kept water out as it was designed to do. A new transfer case was ordered as well as a new transmission. The replacement transfer case had shown signs of the same issues with the splines. Another (2nd one) transfer case had to be ordered. I had purchased this car in february 2019 used. The car had a clean title, no accidents and was serviced regularly. Within 1 year, I had to pay out $5,000.00 To replace transfer case and transmission. I lost the use of my car for over 3 weeks (due to the problems with getting a transfer case that was good). When you google this issue, many people have had similar issues.

Filed Incident Power trainNHTSA 11385491
Engine & cooling

While driving straight on a highway the water pump bearing failed causing coolant to leak and mix with the engine oil. The car immediately started to make a rattle noise and smoke or steam came from under the hood. The underside of the car was covered with coolant and what appeared to be oil. The car was not drivable and had to be towed to a mechanic. Once at the mechanic the took the engine out to get to the water pump, once everything was put back together it was found that the failure also caused damage to the vvt actuater and alternator. The engine is completely shot.

Filed Incident EngineNHTSA 11374566
Transmission & drivetrainBrakes

The brake pedal seems hard too stop the car when in motion on public streets, vehicle continues too roll upon pumping brakes, have too continuously pump the brake hard too stop the vehicle, had the front brakes replaced recently, and brake pedal is still not functioning correctly, possibly the brake booster.

Filed Incident Power train · Service brakesNHTSA 11351938
Airbags

I came outside to my car one morning and started the vehicle.. I noticed the airbag light was blinking, and it never was before.. So I shut the vehicle off to visually inspect it.. What I found was the passenger curtain airbag had malfunctioned.. It didn't deploy fully, but it puckered my headliner so now it's just hanging on the passenger side.. I informed mazda of this and I was told it's only a recall on passenger airbag sensor, but no recalls for curtain airbags.. What can I do

Filed Incident Air bagsNHTSA 11339490
Brakes

I went from having brakes to having to push the brake to the floor, which still did not stop the car, all in the same day. I was lucky not to wreck but could not stop for stop signs or stop lights all while my 22 month old was in the vehicle. Something in the brake system messed up, and it still had a full thing of brake fluid. I believe that it is the brake booster causing this problem. *Tr

Filed Incident Service brakesNHTSA 11327780
Transmission & drivetrain

Suddenly starts to accelerate while at a stop light, stop sign or I am letting a person out and still in drive and my foot is on the break. It has done it 4 time since I got her bought 02/03/2020 the last was 06/06/2020. I have to press down on the break very hard to keep it from going forward lasts only a second or two. *Tr

Filed Incident Power trainNHTSA 11327549
Brakes

Brakes when applied would sometimes go to the floor before stopping. The brake booster has gone bad and very dangerous almost causing an accident. Brake pedal soft and sometimes will not stop.

Filed Incident Service brakesNHTSA 11311569
Airbags

Tl* the contact owns a 2011 mazda cx-9. The contact stated that while driving approximately 10 mph, both front and rear side driver and passenger side curtain airbags deployed inadvertently. During the incident no collision had occurred and vehicle was not driven over a bump. The driver sustained neck and left shoulder injuries and suffered headaches since the incident. Medical treatment was required. The vehicle was towed to the local dealer brown mazda of chantilly (4155 auto park service chantilly, va). The cause of the failure was not determined. The manufacturer was also notified of the failure. The failure mileage was 137,000.

Filed Incident Air bagsNHTSA 11310044

Mazda CX-9: every year compared

YearComplaintsRecallsCrashesFiresTop problemGrade
201535210Engine & coolingB
201454311Engine & coolingB
201368431Engine & coolingC
2012221490BrakesF
2011171473BrakesF
2010195675BrakesF
200959720BrakesC
20081726100SuspensionF
200786521SuspensionC
All CX-9 years

2011 Mazda CX-9 vs rivals

More sales usually means more complaints, so compare similar vehicles of the same year. The grade compares each vehicle with its own model's other years.

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Questions about the 2011 Mazda CX-9

Does the 2011 Mazda CX-9 have any recalls?

Yes - NHTSA lists 4 recalls for the 2011 Mazda CX-9: inflator module (October 2019); inflator module (October 2018); inflator module (June 2017); lower ball joint (July 2015). Recall repairs are free at any authorized dealer. Enter your VIN at nhtsa.gov/recalls to see whether yours has been fixed.

What are the most common problems with the 2011 Mazda CX-9?

By the complaints owners filed with NHTSA, the most common problem areas are the brakes (99), transmission & drivetrain (25), airbags (22).

How many complaints has the 2011 Mazda CX-9 had?

171 complaints have been filed with NHTSA, the first on May 26, 2011 and the latest on October 21, 2026. Of these, 7 describe a crash and 3 a fire, and together they report 2 injuries and 0 deaths.

Is the 2011 Mazda CX-9 a reliable vehicle?

Its Safety Index is 23 out of 100 (grade F: far more problems than a typical Mazda CX-9 year, for its age). The index weighs complaints, crashes, fires, injuries, deaths and recalls against how long the vehicle has been on the road, compared with the same model's other years. It is not a measure of every repair - read the complaints and owner experiences, and have any used vehicle inspected before you buy.

Which Mazda CX-9 years have the most complaints?

2012 (221), 2010 (195), 2008 (172). See every Mazda CX-9 year compared.

What should I do if my 2011 Mazda CX-9 has a problem?

If it is a safety problem, stop driving it if it is unsafe and contact your dealer. Report it to NHTSA at nhtsa.gov/report-a-safety-problem - enough reports start investigations and recalls - and share your experience here so other owners know what to look for.

Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked . Complaints are owners' own reports and are not verified. How we use the data

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