It usually takes about three years to learn auto repair, and only a few months for a short-term professional degree. 1: It depends on where you went to study. There is an automobile school, and you studied intellectual expertise. Road 2: There is a repair shop to learn the actual operation. 3: See if you want to learn to repair cars or trucks. Most cars are petrol cars. Trucks are basically diesel cars now. 4. School study: internship after graduation. Time is when you graduate. Studying in the garage, some for one year, some for three years, depends on your own efforts. But repair is a technical job, and we should learn from the old ones. Just like the car I am driving now, I invited more than 10 mechanics to see a problem, but none of them solved it, including myself. 5. Learning and repairing should also be classified into different categories: machine repair major, chassis repair or specialized engine. Specializing in circuits and air conditioning. Welding, automobile beauty painting. Different majors have different time. After hard work, no matter what major you study, stupid people should not spend more than three years.