My six-year-old car is due for its annual registration renewal in about two months. It has 76,000 miles on it. Is it about time to follow your tips to ensure passing the smog test?


The first time my car failed a smog test was when it was also six years old with 80,000 miles on it. After my mechanic told me about the tips in this article, I used it every year after that, and never again failed a smog test. Try it. What have you got to lose? You won't spend a cent on following my recommended procedure.

Updated on April 11, 2018

Original Article:

How to Pass a Smog Test With an Old Catalytic Converter
By Daniel Mollat