i want to do diploma in mechanical engineering i had got 68.72% in 1oth and afterwards i have done 12th com with 71% secured in it this yea

i a m really interested in automobile diploma but i have heard there is no scope for it ahead and i have also heard that it is branch of mechanical engineering the problem is i m not really interested in design i want to study the part related to engine and basically how a works and all systems