Any type of small business is really about relationships and the better you build a relationship whatever service you are looking for, as a rule I think these things work out.
If you're going to choose a Automotive repair facility in your local area, take your car in for a simple thing like an oil change. Get to know the people there, see if you are comfortable. Over a period of time you get more comfortable knowing "my car is being looked after properly."
Pay attention to those lights coming on, pay attention to a strange noise. Don't be afraid to pick up the phone and ask a question “The only stupid question is the one never asked, and in this case it could save you hundreds, thousands of dollars -- just by picking up the phone.