I was having problems with my car to begin with. What prompted me to look for a mechanic was a failed emissions inspection due to the check engine light being on. Previously, I did have the problem with the light being on at another chain. It was one problem and would cost approximately $600 to fix. One-Stop Auto identified three issues covering the light and performance issues. Their quote - $530, to fix all the issues. I'm glad to say that my car has now passed emissions, and runs wonderfully. Thanks, One-Stop Auto!