My car<1997, Toyota, Corolla> failed smog test a month ago and an auto repair shop did fixing and cost me $550. And I went to the smog test only center again, but I was told to drive 100 miles to get car ready for the test. After driving 200 miles, today I went back to the smog test only center, but I was told to drive 100 miles more because the Catalyst monitor is still not ready.
I need to know how many miles do I need to drive to get the Catalyst monitor ready for smog test.
Thanks very much for your time and attention!!