I would like to study B.E. Automobile engineering.Iam completed diploma coming may.How many years I will study B.E. What isthe percentage ne

https://www.shiksha.com/engineering/ranking/top-private-engineering-colleges-in-india/109-2-0-0-0 Refer the link.

Hello Kishore, It's very nice to hear that you are interested in doing graduation after completion of your Diploma. In the colleges of your state, you can seek admission directly in 2nd year of 4 year degree course. Thus you will require three more years after Diploma. Best wishes to you.