2004 Mazda MAZDA6 Fuel system Problems
- Complaints
- 6about this part
- Share
- 4%of 160 total for the year
- Median mileage
- 23,454miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 6 complaints about the fuel system of the 2004 Mazda MAZDA6, 4% of the 160 complaints for this model year. Where a mileage was given, the median is 23,454 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.
“2004 Mazda 6 wagon. During the 6 months I have owned this vehicle. I have had four occurrences when taking a highway ramp that the car either stalls or looses power when re-entering the roadway. This occurs when the fuel tank is a 1/4 full and below.”
NHTSA complaint #10286303, filed 2009-10, 35,232 miles“I have a 2004 Mazda 6s I have had two incidents where the fuel line has detached from inside the engine and the car has stalled and gasoline has poured out from underneath the car. The first time the dealership told me that there was a recall and I should received it in the mail , I later found out there was no recall . They then fixed the car supposely and three months later it happened again.”
NHTSA complaint #10080380, filed 2004-07, 4,256 miles“I am the original owner of the vehicle, I complained of engine surge on several visits to Mazda, and they would always say they were unable to duplicate the problem. I was recently driving the vehicle when it accelerated on it's own, the RPM's would fluctuate between 2 and 4. The vehicle accelerated uncontrollably, I had difficulty stopping at stop signs and traffic lights on my way to my mechanic. When I reached his garage I left the vehicle in park to show him what it was doing and it idled at 3 rpms. The mechanic has not been able to repair the vehicle. …”
NHTSA complaint #10532150, filed 2013-07, 11,677 miles“1)nov. '04....12 hours after we purchased the vehicle, were called back to have Mazda replace gas tank due to recall .Mazda misplaced my new gas tank. Took approx.4 days to get my brand new car back in my possession. 2)05/01/04: a.complained of moaning sound from steering wheel/engine. B) breaks squeaking loudly. Mazda problem not duplicated 3)8-19-05 a. Clutch shudders when going from 0-1 & 1-2 gear (manual trans.) b. Moaning sound from steering/engine right front area. Mazda: unable to duplicate 3) car makes moaning sound from steering/right front engine while turning. …”
NHTSA complaint #10212282, filed 2007-12, 1,500 miles“Engine will shut off without warning at any speed. I researched the issue and found that there are a large number of complaints regarding the exact same symptoms with the 2003-2005 Mazda 6. Mazda even released a service bulletin: 01-016/06 in 2006 regarding a bad throttle body with aa, ab, or ba markings. Sure enough after removing the throttle body, mine had the aa markings. From the amount of online complaints and the fact that a service bulletin was released, this is not an isolated issue. This is a huge safety concern and should be a safety recall. …”
NHTSA complaint #10407908, filed 2011-06, 81,500 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…
- 10034005Oct 15, 2010Mazda: determining evaporative system leak location for dtcs p0441, p0442, p0455, p0455. Some vehicles may have a mil illumination with dtcs stored in memory. *pe updated 4/18/11.
- 10021213Feb 22, 2007Engine no start due to frozen main relay/fuel pump relay.
Fuel system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2021 | 1 | 6% |
| 2018 | 7 | 12% |
| 2017 | 2 | 3% |
| 2016 | 4 | 5% |
| 2015 | 4 | 7% |
| 2014 | 5 | 4% |
| 2013 | 1 | 4% |
| 2012 | 4 | 4% |
| 2011 | 4 | 3% |
| 2010 | 3 | 1% |
| 2009 | 11 | 3% |
| 2008 | 5 | 5% |
| 2007 | 2 | 1% |
| 2006 | 6 | 3% |
| 2005 | 1 | 1% |
| 2004 | 6 | 4% |
| 2003 | 15 | 9% |
Other parts of the 2004 Mazda MAZDA6
55 complaintsTransmission and drivetrain
19 complaintsBody and structure
15 complaintsElectrical system
13 complaintsBrakes
11 complaintsEngine cooling
11 complaintsLatches, locks and linkages
10 complaintsEngine
7 complaintsExterior lighting
7 complaintsVehicle speed control
7 complaintsOther or unknown
5 complaintsVisibility (wipers, defrost, mirrors)
5 complaints
← All problems reported for the 2004 Mazda MAZDA6
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