2004 Mazda MAZDA6 Transmission and drivetrain Problems
- Complaints
- 19about this part
- Share
- 12%of 160 total for the year
- Median mileage
- 55,000miles
- Trend
- RisingComplaints filed in the last 3 full calendar years are at least 25% higher than in the 3 years before.
NHTSA recorded 19 complaints about the transmission and drivetrain of the 2004 Mazda MAZDA6, 12% of the 160 complaints for this model year. Where a mileage was given, the median is 55,000 miles.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“While driving back home the car started to slow down the speed , when I tried to shifted to get more speed because I was on the expressway , it just died , I took a tow truck to my mechanic and he told me that the engine transmission wiring harness burned.”
NHTSA complaint #10565300, filed 2014-02, 133,000 miles“Kept put its self in gear which is a safety mode !!! So I went to change the battery and smelled something burning and the fuse for the radio was blown and every time I went to change the fuse it would blow.so I took it to the shop to see what was wrong and they had to replace the radio some wiring alternator was putting out 17 volts and burned out the wiring!!! This is a common problem with this car and should be covered!!!”
NHTSA complaint #10551746, filed 2013-11, 55,000 miles“Bought this car in 2010 ever since I had it nightmare, the automatic transmission would bang between 1st and 2nd gear at just normal speed, the tires would spin because of this. It also would slip out of gear in 3rd with shifting up sometimes. But just recently I found out that the intake tube for the car had a giant hole in it. So fixed that and its not really banging 1st and 2nd but slips a little bit.”
NHTSA complaint #10434908, filed 2011-11, 80,000 miles“Over time, the clutch in my manual transmission 2004 Mazda 6 v6 hatchback has been getting noisy, difficult to modulate with surprising sloppy movement in a sideways motion when being depressed, and has been greatly worrying me. Upon investigation, I discovered cracks in the formed and welded steel frame that holds the clutch pedal where the whole assembly bolts to the firewall. I've adjusted my clutch linkage, bled the hydraulic line and attempted to bend the frame back to square, but eventually this frame is going to fail and I will be unable to push the clutch and change gears. …”
NHTSA complaint #10849997, filed 2016-03, 162,000 miles“I purchased my car used in october 2011. My car frequently stalls on the highway and I have to either pull off to the side of the highway to restart it or put it in neutral and restart it while coasting on the highway. This also happens at slow speeds but is clearly a safety issue at highway speeds. Mazda put out a service bulletin on the throttle body in 2006. I have been trying to purchase a replacement throttle body since july 2012 and have found it impossible to find the part and have been told the part is on a national back order. …”
NHTSA complaint #10477056, filed 2012-09, 150,000 milesRelated service bulletins
- 11032103Apr 21, 2026This Service Alert supersedes the previously issued SA listed below: The changes are noted in Red. SA-011/24 02/12/24, 06/06/24, 07/29/24 DESCRIPTION Mazda has developed factory…
- 10251387Feb 12, 2024Mazda has developed factory recommended scheduled maintenance services that support all major vehicle systems. Mazda recommends dealers follow the scheduled maintenance tables as…
- 10208556Feb 23, 2022Mazda has developed factory recommended scheduled maintenance services that support all major vehicle systems. Mazda recommends dealers follow the scheduled maintenance tables as…
- 10206002Dec 8, 2021Automatic Transmission/Transaxle Cooler and Lines Flushing Procedure: Automatic Transaxle/Transmission (A/T) oil cooler and lines must be power flushed completely before an…
- 10186693Jan 21, 2021Mazda has developed factory recommended scheduled maintenance services that support all major vehicle systems. Mazda recommends dealers follow the scheduled maintenance tables as…
- 10173097Mar 12, 2020Mazda has developed factory recommended scheduled maintenance services that support all major vehicle systems. Mazda recommends dealers follow the scheduled maintenance tables as…
- 10136777Apr 2, 2018Always be sure to use the correct automatic transmission fluid when replacing ATF. Using the wrong ATF may cause shift quality complaints or may even damage the transmission…
- 10097348Mar 11, 2013Always be sure to use the correct automatic transmission fluid when replacing atf. Using the wrong atf may cause shift quality complaints or may even damage the…
- 10097367Mar 4, 2013Always be sure to use the correct automatic transmission fluid when replacing atf. Using the wrong atf may cause shift quality complaints or may even damage the…
- 10020553Oct 24, 20061-2 shift shock (trans relearn procedure deleted). Vehicles with automatic transmissions.
Transmission and drivetrain: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2018 | 9 | 16% |
| 2017 | 3 | 5% |
| 2016 | 11 | 14% |
| 2015 | 8 | 13% |
| 2014 | 19 | 14% |
| 2013 | 1 | 4% |
| 2011 | 3 | 2% |
| 2010 | 5 | 2% |
| 2009 | 7 | 2% |
| 2008 | 9 | 8% |
| 2007 | 17 | 11% |
| 2006 | 20 | 12% |
| 2005 | 19 | 13% |
| 2004 | 19 | 12% |
| 2003 | 36 | 21% |
| 2002 | 12 | 43% |
Other parts of the 2004 Mazda MAZDA6
55 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 complaintsFuel system
6 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