One problem related to engine oil leaking has been reported for the 2003 Toyota Corolla. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Toyota Corolla based on all problems reported for the 2003 Corolla.
I purchased a used 2003 Corolla. Vehicle came with all service records and it had been well maintained. I also checked all fluids. Mileage was 133,065 at the time I purchased it. I thought this was good because Toyotas are suppose to last forever, right? a week after I bought it I noticed a knocking in the engine. I checked the oil and it was out. I have to put 3-4 quarts of oil in my car every 7-8 days. It does not leak, it burns it. The engine needs to be replaced. The emissions light stays on and I have also lost a hubcap cover. I've noticed that every other 03 Corolla I pass on road is also missing at least one. After reading the complaints on here, I am very concerned and know I will never by Toyota again.