About Auto & Shop Information

Auto & Shop Information combines two related areas: automotive knowledge and shop/workshop knowledge. The automotive portion covers engine systems, electrical systems, brakes, transmissions, and basic vehicle maintenance. The shop portion covers common hand and power tools, fasteners, measuring instruments, and workshop safety. On the CAT-ASVAB, you have approximately 7 minutes for 25 questions (split between auto and shop). This section contributes to several composite line scores including MM (Mechanical Maintenance) and CO (Combat), making it important for mechanical and combat-related military jobs.

Topics Covered

Engine Systems (4-stroke cycle)
Cooling & Lubrication Systems
Electrical & Ignition Systems
Brake Systems
Transmission & Drivetrain
Hand Tools (wrenches, pliers, etc.)
Power Tools (drills, saws, etc.)
Fasteners (bolts, screws, nails)
Measuring Tools (calipers, micrometers)
Workshop Safety Practices

Sample Questions

Sample Question 1
What type of joint allows movement in multiple directions, like the shoulder?
  • Hinge joint
  • Ball-and-socket joint
  • Pivot joint
  • Fixed joint
A ball-and-socket joint (like the shoulder or hip) allows movement in multiple planes and rotation.
Sample Question 2
In a car engine, what opens and closes the valves?
  • Pistons
  • Camshaft
  • Crankshaft
  • Flywheel
The camshaft has lobes that push on valve lifters to open and close valves.
Sample Question 3
What is the purpose of a car's mass airflow sensor?
  • Measure cabin temperature
  • Measure air entering the engine for fuel mixture calculation
  • Measure tire pressure
  • Measure oil level
The MAF sensor measures incoming air so the ECU can calculate proper fuel injection.

Study Tips for Auto & Shop Information

Learn the 4-Stroke Engine Cycle

Intake, Compression, Power, Exhaust. Understanding this cycle helps you answer many automotive questions about engine operation.

Know Your Tools

Be able to identify common hand tools and know their purposes. Focus on wrenches, screwdrivers, pliers, hammers, and measuring tools.

Study Vehicle Systems

Understand how the major vehicle systems work together: engine, cooling, electrical, braking, and transmission.