LIST OF COLLEGES OFFERING DIPLOMA IN AUTOMOBILE ENGINEERING IN INDIA: 

• Aslim Muhammed Salegh Polytechnic College, Chennai
• Aarsh Mahavidhyalaya, Gujarat
• Acharya Polytechnic, Bangalore
• BET Polytechnic, Karnataka
• Bhagwan  Mahavir Institute of Polytechnic, Haryana
• Bhagwant University, Rajasthan

These are some top colleges if you want to know top colleges in your region specify the region