to me is that they ONLY charge for what really needs to be done, and we discuss it fully beforehand...they have all the 'Manufacturer Repair Codes', so they can check them off when needed... I have come to totally trust them...(I've designed engine components, and changed out my own clutch (small car ;-)...so, I can speak "the language" with them)...they do outstanding work...don't mislead me as to when the work will be done and give me sound advice/warnings as to when future work will be required. I just sign and pay the invoice...never question them on anything...what peace of mind...plus we have fun talking cars...btw, it's a Vietnamese family operation.