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.

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really awful
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
496 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 Toyota Corolla exhaust system problems

exhaust system problem

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2004 Toyota Corolla Owner Comments

problem #5

Mar 012005

Corolla 4-cyl

  • Automatic transmission
  • miles


Contact states that there was a report on a 2004 Toyota Corolla regarding the excessive sulfur dioxide odor. Contact took the vehicle to the service dealer three times, they replaced the converter and the air filter, this did not rid the car of the smell.

- New Britain, CT, USA

problem #4

Jan 042004

Corolla 4-cyl

  • Automatic transmission
  • 2,175 miles
Since I bought the car in Sept 2003 it emitted a rotten egg smell through the vents. I went to arbitration in May 2004 and lost because they said that it was the design of the car. The Toyota rep said that someone wou ld be caontacting me and that they were aware of the problem. No one contacted me and the dealer would not return my calls. The 800# continued to say it was the gas. I have suffered with horrible headaches and I lost my periphial vission on three ocasions. In Feb 2005 I was pulled over sick form the odor and fi again called 800#, they again said it was the gas. I pleaded with the rep to help me and she called me back two days later with a new tsb that came out in May 2004. The dealer reprogramed the ECU and tech smelled odor so they ordered a new cat converter replaced that a reprogramed ECU again. They said it was an internal failure in my cat. If this was the case why was'nt my check engine light going off for the last year and a half? now I have an odor of bad exhaust coming through my vents and Toyota wants me to put in the same gas 4xs. I don't feel safe in this car and I can';T imagine what driving with a bad cat for over a year has done to my health and my engine. I have asked Toyota to issue me a letter saying that the car is safe since I Transport children but they refused.

- Chicago, IL, USA

problem #3

Oct 122004

Corolla 6-cyl

  • Automatic transmission
  • 200 miles
Carbon monoxide is getting into the vehicle when accelerating from various speeds. The problem was reported to the dealer, and consumer will take vehicle to the dealer for inspection.

- Baton Rouge, LA, USA

problem #2

Jan 202004

Corolla 4-cyl

  • Automatic transmission
  • 100 miles
I bought a 2004 Toyota Corolla type S on December 28, 2003. I've had the car for about 2 months and have noticed an extremely horrible sulfur smell from the vehicle. I have also had the dashboard ripped apart twice, and checked for extremely loud vibrations and noise. The first time, the service department found "nothing wrong, and heard no unusual noises" and the second time, when I test drove it with the technician, they applied some foam around the wiring inside the dash. I can still hear the vibrations and noise in the dashboard whenever I am driving the vehicle.

- Seattle, WA, USA

problem #1

Sep 132003

Corolla 4-cyl

  • Automatic transmission
  • 4 miles
2004 Corolla: Emission of hydrogen sulfide gas from exhaust system.

- Portland, OR, USA

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