In India, it is a 4 year course. It's available in most of the engineering colleges in the country. Most candidates prefer to go out of country after studies.
In order to be a automotive mechanical engineer, you will need a four year bachelors degree. Prior to college, a person interested in this field should take high school course in mathematics, chemisty and physics.
Most schools that offer automotive mechanical engineering offer both bachelor and masters degree programs, so it may take you four or more years to complete your education. The cost will depend on whether you're attending a public or private school.
i think it will be take nearly 3 t0 4 years long to automative mechanical engineering. because with in a short period we could not not get the details.