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.

NHTSA — Engine And Engine Cooling: Exhaust System: Manifold/Header/Muffler/Tail Pipe Problems Seal Of Pretty Good


definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
25,000 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2004 Mazda MAZDA3 exhaust system problems

exhaust system problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2004 Mazda MAZDA3:

Unsubscribe any time. We don't sell/share your email.

2004 Mazda MAZDA3 Owner Comments

problem #1

Dec 242009


  • 25,000 miles


The contact owns a 2004 Mazda3. She stated that the vehicle could be driven as an automatic or a manual. While driving 20 mph in manual mode she attempted to shift gears, to no avail. She had to take her foot off of the gas pedal in order for the gears to release and afterwards the gears started to shift on their own. She was able to exit the freeway when the vehicle lost all power, but continued to accelerate. She was unable to stop the vehicle or make a turn. The vehicle began moving from one lane to another and accelerated through a red light to avoid a collision. The vehicle stopped accelerating within in a few minutes. The vehicle was towed to a local mechanic who diagnosed the failure as the intake manifold. The intake manifold melted, damaged the sensor and the catalytic converter. The mechanic replaced the catalytic converter, sensors, and the gaskets; however, she had to add oil to the engine because the engine light illuminated constantly. She took the vehicle back to the mechanic who stated that the engine also needed to be replaced. She contacted the manufacturer and filed a report; however, the manufacturer stated that they would not assist with the repairs. The engine was not replaced. The failure mileage was 25,000 and the current mileage was 75,000.

- Lakeforest, CA, USA

Search for these popular complaint phrases...

Not what you are looking for?