We prove a claim by the use of a number of tools, so it is never your word against theirs. When a vehicle is taken to a dealer for a warranty repair, several copies of the repair order are generated within the service department, most of which you the customer, never see. Such notes are not made available to the customer. In such a case, the customer is left with the false impression that the vehicle is operating properly and will unknowingly drive with a potentially dangerous defect. Another reason is time.
Many dealers lack the resources and mechanics necessary to properly diagnose and address a concern.
Under warranty procedures utilized by manufacturers, a problem which goes undiagnosed by a mechanic, will not be paid. In other cases, the manufacturer may limit the amount of diagnostic time for repairs and in many other cases, unskilled mechanics lack the knowledge to perform their function in an efficient or effective manner. The bottom line is that while repair records are helpful to a case, they are not the only thing that determines the outcome. If you feel you are not getting what you paid for in quality and reliability, then no amount of misrepresentations on a repair invoice should convince you otherwise. My car has clear problems.