If you wanna stay in Pakistan than N.E.D. is fine which is a reputed university of Pakistan. If you want to do it from abroad then check out University of Dearborn, Michigan USA. They are offering Engineering Degree (Bachelors) in Automobiles.
You can not get admission in most of the overseas universities on the basis of inter only. Generally there are the following tests that you need to pass.
England - IELTS.
America - GRE, Toefl.
Canada - GRE/ IELTS.
Australia - IELTS.
Every other university has its own requirements. So, I would advise you to search the best universities yourself. Then check out what kind of preparations you will have to do.