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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pretty bad
Typical Repair Cost:
Average Mileage:
149,800 miles
Total Complaints:
2 complaints

Most Common Solutions:

  1. buy a new head gasket (2 reports)
2003 Toyota Corolla engine problems

engine problem

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2003 Toyota Corolla Owner Comments

problem #2

Sep 082010

Corolla 4.0L 4 cyl

  • Automatic transmission
  • 174,600 miles


I have had the oil changed in my Corolla 3 times since buying it from a used dealer several months and about 9000 miles ago. I have a regular mechanic who I trust, but had the car inspected elsewhere before buying it. The inspection revealed no problems (but they must have missed it). I had the oil changed at the time of the inspection. 4000 miles later, I had it changed again at a Goodyear service station and they reported that a gasket was leaking oil, but that it was a very slow leak and could wait to be fixed as long as I kept an eye on the oil level.

After another 4000 miles and not much leaking, I took it to my trusted mechanic to have another problem fixed and he noticed the leak as well, but said that it could be caused by one of several parts- most likely the "valve gasket." He replaced it for me, and I have not noticed any change in the oil level in the past week. I will bring it back to have him check it again in about 2 weeks.

- , Lawrenceville, GA, USA

problem #1

Apr 022010

Corolla LE

  • Automatic transmission
  • 125,000 miles

I did not actually have the problem fixed because I am so ticked off with Toyota and because it is too expensive!!!! Last year I had the timing tension seal redone because there was an oil leak. Strangely enough, my car continued to noticeably leak oil. I reported this to Toyota at my next oil change and they claimed they could find no such leak. I recently took my car in for a major tune up and suddenly they have discovered a leak at my head gasket requiring a replacement. I already paid a thousand dollars last year to fix the leak, so I refuse to give them any more of my money. They have also suggested that it might be more worth while to buy a new car.

- , Novato, CA, USA

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