Communication is the key to a successful result when dealing with used car repair shops. The first, and most important, aspect is for the car owner to be prepared to explain the problem in detail. It may be helpful to have an idea when the problem first began and whether it is a constant or sporadic occurrence. The technicians at the used car repair shop will be able to better understand the problem and possibly locate it faster with the help of the car owner. For instance, if the problem is most noticeable when the brakes are applied or during acceleration, this will be important information for the used car repair shop.

While explaining the automobile's problem to a used car repair shop, it will be ideal if the car owner could provide a written list of the symptoms that their car is experiencing. It is also important that the car owner not suggest a remedy, but rather allow the used car repair shop technician to diagnose the problem and offer a suggested course of action to repair the problem. The technician is a professional who is knowledgeable with cars and what to look for, so it will not make the process any quicker if the car owner is suggesting a remedy before the technician has had an opportunity to inspect the car.

The car owner should not be embarrassed to ask questions or request more detailed information regarding automotive terms. There is truth in the adage that indicates, "there is no such thing as a stupid question." While it is important to ask plenty of questions, it is equally important for a car owner to refrain from demanding an immediate diagnosis. It is best for the owner to leave a telephone number, at which he/she may be contacted, with the used car repair shop. The best idea is to request an update, cost estimate and approximate time of completion prior to the actual work beginning.

If the used car repair shop informs the car owner that new equipment must be installed, the owner should inquire about warranties and any available guarantee. If either exists, the information should be provided in writing and a copy given to the car owner for his/her records. It is also a good idea to inquire about payment options. Some used car repair shops may allow their customers to make convenient monthly payments after the work has been done, while many require immediate payment in the form of cash, money order, check or credit card.