Dear Soumik,

In order to become a automobile engineer you have to appear in entrance exams of engineering.

To take admission in NITs you cn appear in JEE Main and for private colleges you can appear in SRMJEE and Manipal.

To know the complete details about the exams you can refer below link

https://engineering.careers360.com/exams

You can check the top colleges below

National Institute of Technology Warangal

National Institute of Technology Patna

SRM University, Chennai

Manipal Institute of Technology, Manipal

Lovely Professional University, Phagwara

PSG College of Technology, Coimbatore

SASTRA University, Thanjavur

To check the complete list you can refer below link

Top Automobile Engineering Colleges

Good Luck!!