The general purpose of the occupational analysis is to provide workable, basic information dealing with the many and varied duties performed in the auto mechanic occupation. It identifies the broad area of skills and knowledge necessary to perform various tasks involved in diagnosis, maintenance, and repair of automotive systems. Selected supervisory tasks involved in running a shop employing several mechanics are included. The document opens with a brief introduction followed by a job description. The bulk of the document is presented in table form. Seventeen duties are broken down into a number of tasks and for each task a two-page table is presented, showing on the first page: tools, equipment, materials, objects acted upon; performance knowledge (related also to decisions, cues and errors); safety--hazard; and on the second page: science; math--number systems; and communications (performance modes, examples, and skills and concepts). The duties include: keeping records; supervising mechanics lubricating and maintaining vehicles; servicing engine block assemblies; servicing and repairing cooling systems, fuel systems, valve trains, ignition systems, braking systems (drum and disk), steering units and A/C units; repairing and aligning front end assemblies; repairing rear axle and drive line, and standard and automatic transmissions; and maintaining and repairing electrical systems. Abbreviations of automative terms are appended. (BP)