Table 1 shows one common other fuel system related problems of the 2020 Mazda CX9.
| Problem Category | Number of Problems |
|---|---|
| Other Fuel System problems |
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.
Prior to [xxx] the vehicle ran rough and sputter excessively. I took car to local repair shop. Diagnostic equipment determined the fuel injector needed to be replaced. Vehicle ran better but continued to sputter and ride rough on occasion. Prior to [xxx], the vehicle stopped operating properly. The vehicle would not travel faster than 20 mph and sometimes would stop completely in the middle of the road. This was a hazardous situation. The vehicle seemed to be starved for fuel. All warning lights were displayed on the short trip home. Being too dangerous to drive the vehicle was towed to a different repair shop. Diagnostic equipment determined the throttle body needed to be replaced. This was done prior to [xxx]. I drove the car less than 5 miles after the 2nd repair and the same behavior returned. Vehicle would sputter run rough sometimes stop etc. All warning lights were displayed. Vehicle seemed to be starved for fuel. Vehicle was towed back to the repair shop. Next step will be to contact Mazda dealership in huntsville al and see if they will accept the vehicle for repairs after I have it towed. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).
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. The time before, I took it in the morning it happened, 5 min after it happened and the computer said it happened 10 starts ago. The last time, 6/9/25 they said they suspect fuel pump going bad, but until the vehicle gives a "check engine" light or dies all together they are not 100% sure. The vehicle is unsafe if it dies in the middle of the freeway/road with no warning to myself or the other vehicles around me. This has been going on for at least 1 year now, maybe longer dealership has all records. Seeing how the 2018 & 2019 Mazda cx-9 had fuel pump recalls makes me wonder if the 2020 should have been included in this recall. This has been an on going problem. 6/7/25 was most recent incident.