Is there any particular state which you are interested in and generally below colleges are decent to pursue B.Tech in Automotive Engineering -

Delhi Technological University

Anna University

PSG College of Technology

Manipal Institute of Technology

Jawaharlal Nehru Technological University Kakinada

SRM Institute of Science and Technology, Chennai - Kattankulathur Campus

Dayananda Sagar College of Engineering (DSCE) etc.

Good Luck!!!