Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety.


really awful
Typical Repair Cost:
Average Mileage:
68,905 miles
Total Complaints:
1 complaints

Most Common Solutions:

  1. replace under recall or redesign and replace (1 reports)
2004 Mazda MAZDA6 exhaust system problems

exhaust system problem

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2004 Mazda MAZDA6 Owner Comments

problem #1

Oct 122012

MAZDA6 6S 3.0L

  • Automatic transmission
  • 68,905 miles


1) Mazda "IS" well aware of the catalytic converter issue on the Mazda 6 models every one from 02-06 have this issue in the 3.0 engine yet Mazda refuses to recall and we're left to front the bill. Don't believe me, randomly contact any Mazda service department and inquire as if your a consumer!!! why on earth did Mazda approve this design? 3 catalytic converters within the first 36" of exhaust.

i am not an engineer but i can tell you that backpressure and restriction are devastating to this motor, just ask all the customers who have payed 4200$ to replace their failed engines due to this exhaust. i will be googling all those who have had this issue, i will be mailing them a petition and i will file this is blatant disregard towards consumers, why are we left to pay for these constant malfunctions?

2) Feel free to google any Mazda 6 forum and you will see endless complaints, one after another, its not random coincidence!!! here's just one

3) I have had this car for approx 7 months and i'm forced to replace part after part, i will list each part in separate complaints

- , Liberty, NY, USA

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