Hi

There are many opportunities available and many things one can do after thus completing this course. We all are aware of the fact that btech is now a very good option that one can pursue it will not only enhance your advanced knowledge but also will open great future job and career opportunities furthermore people go with PG courses later .things like phd ,mphil are also there but it totally depends person to person that whether they have to do further studies or not. Anyways there is no end to knowledge and learning.

You should be more concentrated towards your field and passion ,as there are other courses too available in other colleges one can opt for government or private run college . you can also take admission mechanical engineering.
Also find out more from

https://www.google.com/url?sa=t&source=web&rct=j&url=https://engineering.careers360.com/colleges/list-of-diploma-in-automobile-engineering-colleges-in-india&ved=2ahUKEwj7lYzi5v_wAhXFW3wKHVG1C84QFjAAegQIAxAC&usg=AOvVaw0VLs0i1AVfSxWcYlilvfgD