2011 Mazda CX-9 Fuel system Problems
- Complaints
- 1about this part
- Share
- 1%of 171 total for the year
- Median mileage
- 103,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the fuel system of the 2011 Mazda CX-9, 1% of the 171 complaints for this model year. Where a mileage was given, the median is 103,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“The contact owns a 2011 Mazda CX-9. The contact stated that while driving at 70 MPH, a strong odor of fuel fumes was inside the vehicle and an abnormal noise could be heard from the front of the vehicle. The vehicle was taken to an independent mechanic where it was diagnosed that the transfer case needed replacement but the repairs were not completed. The contact then took the vehicle to a dealer where the failure was then confirmed. The manufacturer was notified of the failure. The failure mileage was approximately 103,000.”
NHTSA complaint #10937559, filed 2016-12, 103,000 milesRelated service bulletins
- 10202695Oct 13, 2021Ethanol is becoming a common additive in gasoline. Gasoline containing ethanol is likely available at your local gasoline station. Typical blends of ethanol include E10 and E85…
- 10154879Mar 20, 2019In support of the new MRT distribution, Mazda will ship to dealers a new Dual Purpose Diagnostic Leak Detector beginning March, 2019. Training videos will be posted to MGSS…
- 10213377Dec 14, 2015Noise from fuel tank insulator Some vehicles may exhibit an unusual noise while driving the vehicles The noise may be caused by a broken fuel tank (B) insulator (A) that is…
- 10105649Dec 14, 2015Some vehicles may exhibit an unusual noise while driving the vehicle. The noise may be caused by a broken fuel tank (b) insulator (a) that is hanging down and contacting the…
- 10076634Dec 14, 2015Summary to be provided on a future date.
Fuel system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2020 | 3 | 16% |
| 2019 | 2 | 4% |
| 2018 | 7 | 5% |
| 2017 | 6 | 10% |
| 2016 | 8 | 7% |
| 2015 | 1 | 3% |
| 2014 | 5 | 9% |
| 2012 | 4 | 2% |
| 2011 | 1 | 1% |
| 2010 | 2 | 1% |
| 2008 | 2 | 1% |
| 2007 | 5 | 6% |
Other parts of the 2011 Mazda CX-9
99 complaintsTransmission and drivetrain
25 complaintsAir bags
22 complaintsEngine
15 complaintsSuspension
8 complaintsElectrical system
6 complaintsOther or unknown
6 complaintsElectronic stability control
4 complaintsSteering
4 complaintsVehicle speed control
4 complaintsExterior lighting
3 complaintsWheels
3 complaints
← All problems reported for the 2011 Mazda CX-9
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology