Auto mechanics repair and maintain cars. Some mechanics work on all parts of any car, while others specialize in one area or on one type of car. The most challenging aspect of car repair is often the mechanic's favorite part: diagnosing the problem. Speed and accuracy in diagnosis and quoting prices to the customer are crucial if the mechanic intends to keep long-term clients. The mechanic examines the engine while it is running (if possible) to see if his initial assumptions are correct. Electronic diagnostic equipment is useful but the good mechanic can tell a lot by using eyes, ears--even nose--as he searches for problems and potential hazards. Sometimes he repairs parts, but if the part is worn or damaged, he replaces it. Some mechanics compare their field to that of the physician, because most people come in only when their car is in dire straits, not when regular preventive maintenance could have avoided the problems altogether. When people come in for an automotive check-up, mechanics often replace worn parts before they become hazardous to the driver, even though drivers can be suspicious of mechanics who recommend the replacement of parts that haven't stopped functioning. The best mechanics have mastery of a wide variety of integrated skills: electrical systems (a car's wiring is more complicated than an average home's); computerized electronics (a television set seems simple by comparison); fuel systems and refrigeration (a car's "plumbing" is a Byzantine maze of tubes). Auto mechanics proudly compare themselves to doctors (though not, unfortunately, in salary range), since they mainly see people with complaints; but whereas the human body and its problems have remained essentially unchanged for millennia, the designs of cars change every year. As a result, the job requires more preparation than ever before. More and more, cars are controlled by electronic instruments, so mechanics are using computers constantly. "Computers have become as much a part of the tool box as wrenches," said one mechanic. Most auto mechanics intern while still in automotive repair school, then work full time at the same dealerships. They read trade papers daily to keep abreast of changes and trends in their industry. As they gain experience they can move into higher-paying, specialized positions. They can also rise to the ranks of supervisor or manager, particularly if they have strong interpersonal skills to calm cranky customers who are displeased by high service bills and inconvenience
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