What's the fee per semester for a Diploma in automobile engineering including hostel too?

It depends on the college you are studying in. On an average the fees varies from 20,000 INR to 2 lac and the hostel fee varies from college to college.

Basically, the fee structure depends on the college which you get. But approximately fee it will be 20,000-30,000 per semester and hostel fees are not included in this.