An auto mechanic goes by several different names, including car mechanic, automotive technician, and service technician, and is primarily responsible for evaluating, fixing, and maintaining cars and trucks. Some of these mechanics may specialize in a particular area or system of the vehicle, such as a brake technician, transmission rebuilder, or automotive air-conditioning technician. These professionals are usually trained to use a wide range of tools on various kinds of vehicle models. Other job duties may include: