Problems · NHTSA complaints

2009 Mazda CX-9 problems

Owners filed 59 complaints about the 2009 Mazda CX-9 with NHTSA between Mar 2010 and Jun 2026. The most-cited component is service brakes (17).

Complaints
59
Filed with NHTSA
Crashes
2
Reported by owners
Fires
0
Reported by owners
Injuries
0
People reported injured
Deaths
0
Reported to NHTSA
01 —By component

Complaints by component

One complaint can cite several components
  1. Service brakes17
  2. Air bags16
  3. Suspension6
  4. Power train6
  5. Engine4
  6. Tires3
  7. Seat belts2
  8. Steering2
  9. Wheels2
  10. Exterior lighting2
  11. Engine and engine cooling1
  12. Visibility1
  13. Vehicle speed control1
  14. Other / unknown2

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

Data from NHTSA Complaints API · synced Oct 28, 2026NHTSA vehicle page
02 —Trend

When complaints were filed

Does it get worse with age? Complaints per calendar year filed
View as table
Model yearComplaints filed per calendar year
20102
20110
20122
20134
20143
20155
201613
201714
20183
20193
20205
20212
20221
20230
20241
20250
20261

Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.

03 —Owner reports

Top problems in owners’ words

Verbatim from NHTSA complaints, newest first

Service brakes

17 reports1 crash
“MY BRAKES STARTED FEELING SPONGY BUT HARD TO PUSH WHEN I WOULD TRY TO COME TO A STOP. IT FELT AT TIMES LIKE MY CAR WASN'T GOING TO STOP. I STOPPED DRIVING IT AND THE BRAKE BOOSTER WAS REPLACED. AT THAT TIME, I LOST BRAKES COMPLETELY. THE BRAKE PEDDLE GOES ALL THE WAY TO THE FLOOR WHEN PRESSED. HOPEFULLY THE BOOSTER IS A BAD ONE.”
Owner complaint to NHTSAFiled Jul 11, 2020Service brakesODI 11338789

Air bags

16 reports1 crash4 related recalls
“TAKATA RECALL, I CALLED MAZDA AMERICA ON OR AROUND MARCH 1, 2019 ABOUT THIS RECALL, I EXPLAINED I WOULD NEED A VEHICLE TO USE AS THEY FIXED IT, THE LADY ON THE PHONE EXPLAINED THAT THERE DEALER IN HUNTERSVILLE NC WOULD NOT HAVE A VEHICLE TO LOAN FOR THREE OR FOUR DAY AND THAT THE DEALERSHIP WOULD CALL ME, ITS NOT THE 25TH OF MARCH AND NO PHONE CALLS FRON MAZDA OR THERE DEALER!”
Owner complaint to NHTSAFiled Mar 25, 2019Air bagsODI 11191323

Suspension

6 reports1 related recall
“The contact owns a 2009 Mazda CX-9. The contact stated that while driving at an undisclosed speed and depressing the brake pedal, the vehicle made an abnormal sound. The contact stated the brake pads and rotors were replaced; however, the abnormal sound persisted. The contact called and informed the dealer of the issue however, the vehicle was not diagnosed or repaired. The contact referenced NHTSA Campaign Number: 15V451000 (Suspension) as a possible solution for the failure; however, the VIN was not included. The manufacturer was not made aware of the failure. The failure mileage was approximately 120,000.”
Owner complaint to NHTSAFiled Apr 23, 2024SuspensionODI 11584693

Power train

6 reports
“TL* THE CONTACT OWNS A 2009 MAZDA CX-9. WHILE DRIVING APPROXIMATELY 45 MPH, THE VEHICLE LOST ACCELERATION AND A RATTLING NOISE WAS HEARD. THE CONTACT HAD TO COAST THE VEHICLE OVER TO THE ROAD SHOULDER TO A COMPLETE STOP. THE VEHICLE WAS RESTARTED AND DRIVEN TO THE CONTACT'S RESIDENCE. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHO DETERMINED THAT THE TRANSFER CASE WAS FRACTURED AND NEEDED REPLACEMENT. THE VEHICLE WAS NOT TAKEN TO THE DEALER FOR DIAGNOSTIC TESTING. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 125,000.”
Owner complaint to NHTSAFiled Jul 19, 2018Power trainODI 11112379

Engine

4 reports
“OIL AND COOLANT MIXED TOGETHER AND CAUSE ENGINE TO DIE WITH A SERVICE CODE OF P0016 WHICH MEANS PER THE DEALER THAT THE ENGINE NEEDS TO BE REPLACED. I BOUGHT THIS CAR BRAND NEW AND HAD IT SERVICE BY MAZDA DEALERSHIP CONSISTENTLY. THIS IS COMMON ISSUE AND MAZDA MANUFACTURER SHOULD BE COVER THIS ISSUE FOR CUSTOMERS.”
Owner complaint to NHTSAFiled Jan 22, 2020EngineODI 11301058

Tires

3 reports
“October 2021 purchase 2 Cooper Evolution H/T All-Season 245/60R18. With less than 8k miles, both tires developed deformities/bulging on upper sidewal/tread,line intersect, causing vehicle to shimmy. The dot #'s of both tires are up83 1LE 1021 . Tires have a 60k warranty. Cooper tires issues two safety recalls due to sidewall deformities on this tire model, same plant, but in a different sizes. February 26, 2021 cooper tires has issued yet another safety recall on this exact model tire but in a different size. The 2 cooper evolution HT tires seem to also have sidewall defects. I feel that the bulging tires are a safety hazard due to manufacturing defects. I would like to have my 245/60r18 cooper evolution as well as all of the other sizes of this model tire made by cooper, futher reviewed to the recall list”
Owner complaint to NHTSAFiled Oct 23, 2022TiresODI 11490468
Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 28, 2026

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.