Need some clarification on these engineering fields?

At most institutes, there is no separate department of Automobile Engineering.

Usually you can get a Bachelor in Mechanical or Aerospace engineering and then can specialize in a subject related to Automobile engineering. In general, both these majors include all that you may need as an automobile engineer (and more).

I believe in UK they offer a degree as well as Higher Diploma in the subject but that concentrates more on the practical aspects of the field and a lot of practical training is included.

Unl...,

Those details would be answered by the specific institution. I hope this isn't too simplified, but...

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Generally, Engineers study almost all the physical sciences. I think Engineering can be divided into two major areas: Mechanical and Electrical. I'll ignore bio-Engineering for this discussion.

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We all study fundamentals in mechanics and electricity(electronics) as well as physics, and chemistry. This provides us with the ability to understand most of the ways the world works and move on to focus on the specific area we are interested in.

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However, because there are many different industries, we specialize and take more in-depth courses in either mechanical or electronic areas. For Communications, it would be more signals and electromagnetics. For plane Mechanical it would be more advanced mechanics. For Automotive it would be auto focused courses such as combustion, transmissions, steering and perhaps body and interior related courses. For Aerospace it would be things like the environment of space, rocket motors, flight, energy management. For Civil, it is structures, materials and the like. For Computer, it would be more courses on the needs of and the structure of computers. Hope this gives you the idea.

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How does that old joke go?

Mechanical Engineers design weapons, but Civil Engineers design Targets... (;-)