After hearing so many praises here on the Internet, I decided to try it out myself. I was slightly disappointed. The good things about them is they are VERY friendly and professional. However, when I made an appointment with them on the phone, they said that they could do a price estimate (itemize the parts and the labor cost, etc.) for me free of charge, and they will also do a complimentary inspection. However, when I got there, they told me that for "diagnostic" they will have to charge me for US$120, as it would take 1-2 hours to diagnose the problems, and without diagnostic, they can not come up with a price estimate. They did offer that they could do a free error code scanning for me, which I'm thankful (my car is a 1993 Mercedes, which does NOT have OBDII system, meaning more trouble for them). As I had to rush back to work, I decided to just let them do the error code scanning (to see if it matches with my friend's scanning), and NOT the $120 diagnostic. I'm glad that I decided to do that, as later when their mechanic did the code scanning, their diagnostic system had trouble to communicate with my car computer. The mechanic said that either there is something wrong with my my car computer, or it's a software problem with their diagnostic system. However, just few days ago my mechanic friend just did the code scanning for me and he was able to get the codes (so nothing was wrong with my car computer). Bottom line is, friendly and professional folks, but they might NOT have sufficient equipments for some specialty cars (like Mercedes made before 1995).