Fee details per annum for different colleges are given below:

Fees varies with every college. For colleges such as IITs, it's around Rs 1,15,000 - Rs 1,30,000 (academic fees) +Rs 15,000 (mess charges). You can refer the below link for details about every campus.

https://engineering.careers360.com/articles/iits-btech-fee-structure

For NITs, the variance in fees across different colleges is vast. The fees (barring hostel charges) can be from Rs 62,000 to over Rs 1,10,000 depending upon the NIT. You can refer the below link for details about every campus.

https://engineering.careers360.com/articles/nits-btech-fee-structure

Another top tier college is BITS Pilani, the fee structure of BE Mechanical is Rs 1,59,000 per semester + Rs 675 (students' aid and union fees). You can refer to the link below for a more detailed info on the same.

https://engineering.careers360.com/articles/bitsat-fee-structure

In SRM Chennai the fee is around Rs 2,50,000 lpa (excluding hostel charges).

In Manipal University, the fee is around Rs 1,50,000 lpa (excluding hostel fees).

In VIT University, the fee is around Rs 1,98,000 (including caution money/excluding hostel fees).

Hope this helped. Good luck.