The check engine light came on in my Mercedes Metris van on a Sunday evening. I was able to make it home with no drive ability issues. On Monday morning I started searching for repair centers. Most said they could diagnose the problem (the Metris is an oddball, so I always make sure the repair folks know what they are dealing with). SSC said they could check it in about two hours. I dropped the van off at their Gilbert facility and sure enough, they diagnosed it that day and gave me a written report on what Mercedes says probable causes could be. They were able to clear the check engine condition and only charged me a minimum service fee. Friendly people, fast service, technical expertise, good prices. What else could you ask for in an auto repair center?