Hii sandeep,

After completing your diploma degree from a recognised polytechnic college write an entrance exam for lateral entries to enter into the field of engineering.You will directly get into the second year of Engineering.After completing your graduation ,if you want tondo masters in technology,then you should take up the GATE exam.This is how the way it is to complete your masters.

You will get more opportunities in the field of Automobile Engineering , if you can complete your graduation degree from a good university or college. 

You can get good companies like Bosch,Hyundai Motors,Bharat Benz and many other related to the field of Automobile Engineering.If you can complete your masters in a good IIT or NIT then it will be an added advantage and you will get high package as well .

Thank you.