Hello,

The govt polytechnic that offers automobile engineering for diploma are  ( in kerala )

• Government Polytechnic College - Kalamassery
• Government Polytechnic College- adoor
• Government Polytechnic College- attingal
• Government Polytechnic College- Nattakom
• Government Polytechnic College-Ezhukone

you can also refer to

https://engineering.careers360.com/colleges/list-of-automobile-engineering-colleges-in-kerala

Hope this helps you

Best wishes for future

Diploma in Automobile Engineering is a 3 years technical course. It is offered by numerous government and private colleges. The course is not as broad as Btech but it will give the working knowledge regarding the design, safety and mechanical behaviour of the Automobile Engineering.

To know more about  Automobile Engineering you may visit the link below:

https://engineering.careers360.com/colleges/list-of-automobile-engineering-colleges-in-india

I hope my answer helps. All the very best for your future endeavors!