describe the job and responsibilities of an auto mechanic?

Answer 1

Automotive Technicians are trained to diagnose automotive mechanical problems and to successfully replace the defective part or parts. Since cars have become increasingly complex machines, specialization has become the new standard, allowing a technician to become more learned in a specific area. Some examples are:
Engine Repair-Repairs and overhauls internal combustion engines
Transmission Repair-Repairs and overhauls manual and automatic transmissions.
Drive line Repair. Repairs axles, differentials, drive shafts.
Lubrication specialist- Specializes in oil changes and service items.
Brake repair. Rebuilds brakes and related components.
Electrical repair. Repairs computers, sensors, alternators, generators, starters and wiring.
There are even more than this..