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. Notes: The Toyota Matrix is the mechanical twin of the Pontiac Vibe.

Both models were a joint GM-Toyota venture, manufactured together at a NUMMI production facility in Fremont, CA. Only the heating & A/C systems are different.


pretty bad
Typical Repair Cost:
No data
Average Mileage:
180,000 miles
Total Complaints:
1 complaints

Most Common Solutions:

  1. not sure (1 reports)
2003 Toyota Matrix exhaust system problems

exhaust system problem

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2003 Toyota Matrix Owner Comments

problem #1

Jul 012013

Matrix XR 1.8L

  • Automatic transmission
  • 180,000 miles


At 90000 I had a check engine light come on. I had the CAT changed and fixed the problem. After 130000 the check engine light came on again. Had the CAT changed again. At 160000 had check engine light come on again. change cat and 15 miles later the check engine light came on, ended up changing the #2 o2 sensor. No check engine light, but now wont pass smog. The smog tech says running too high to pass. He says keep running it and let the computer reset? I have asked other mechanics and they say just go get a dirty smog and there is probably nothing wrong with it. Car seems to be running well. I drive 160 miles to work and back in the desert. Any suggestions?

- , Rancho Cucamonga, CA, USA

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