Automotive Excellence was recommended to me by a local smog shop. My car didn't pass a smog test and needed a new muffler. When I was telling the service guy what was happening, he not only knew the issue right away, but also the type of car I had. That showed me that he knew cars very well. They did the installation, and I was seen and on my way very quickly. Their prices were great, and their knowledge about cars is amazing.