2020 Mazda CX-9 Fuel system Problems
- Complaints
- 3about this part
- Share
- 16%of 19 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 3 complaints about the fuel system of the 2020 Mazda CX-9, 16% of the 19 complaints for this model year.
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 vehicle will hesitate/stall while driving down the road. The vehicle has done this multiple times and has actually shut off on 2 different occasions while at a stop. on 2 occasions now the vehicle has not wanted to start. I have taken vehicle to Mazda dealership and they can never duplicate it. When they check for any codes, the vehicle computer does not give accurate times when happened. This last date I took it to them 6/9/25, the computer said it happened 4000 miles ago. …”
NHTSA complaint #11665964, filed 2025-06“The mazda Cx-9 is having the same fuel pump issues that was recalled up until 2018 models. The issue with the lean codes and faulty fuel pump continues”
NHTSA complaint #11745213, filed 2026-06Related service bulletins
- 10209774Mar 1, 2022Some vehicles may exhibit a fuel odor at the left / rear area of the vehicle while the engine is idling that usually occurs when the fuel tank is warmed up in hot weather and/or…
- 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…
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 2020 Mazda CX-9
5 complaintsElectrical system
4 complaintsOther or unknown
3 complaintsBrakes
2 complaintsForward collision avoidance
2 complaintsTransmission and drivetrain
2 complaintsAir bags
1 complaintsBack-over prevention (rear camera)
1 complaintsBody and structure
1 complaintsTires
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaints
← All problems reported for the 2020 Mazda CX-9
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 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