Remember, however, that certification along is not an absolute guarantee of good or honest work. Ask if the technician or shop has experience working on the same make vehicle as yours. Always get and keep a signed written cost estimate for the work to be performed. Make sure the estimate specifically identifies the condition to be repaired, the parts needed and the anticipated labor charge. Make sure the estimate states that the shop will contact you for approval before performing any work exceeding a specified amount of time or money.
Some shops charge a flat rate for labor on auto repairs.
This published rate is based on an independent or manufacturer's estimate of the time required to complete repairs. Other shops charge on the basis of the actual time the technician worked on the repair. Before having any work performed, ask which cost method the shop uses. Even though you bring in your car with a specific problem, additional repairs may be recommended. If you are uncertain whether the work needs to be done, you may want to consult your owner's manual or get a second opinion.