Founding-member offer: the first 1,000 members are locked in free for life. Claim your spot →
All tests
2 aircrew candidates online now
Science & Technical
Hard
AI
Auto Information
Cars, engines and systems
Automobile technology: the four-stroke engine cycle and the fuel, ignition, cooling, lubrication, electrical/charging, drivetrain and braking systems. On the computer ASVAB this is its own subtest; on the paper test it's combined with Shop Information into one Auto & Shop score.
Duration
~8 min
Length
14 questions
Difficulty
Hard
Sign in to start this test.
New to the ASVAB? Read the complete guide
Every subtest explained, how the AFQT and line scores work, and how to study.
What to expect
- Four-option questions about cars and how they work.
- On the computer ASVAB, Auto Information is a short, separately timed section (paired with Shop).
- An explanation that names the part or system and what it does.
What it measures
- The four-stroke engine cycle and how engines work
- Major car systems: fuel, cooling, electrical, brakes, drivetrain
- Common parts and what they do
Instructions
- 1Learn the four-stroke cycle in order: intake, compression, power, exhaust.
- 2Gasoline engines use a spark plug; diesels ignite by compression.
- 3Know the job of each major system and its key parts.
Tips
- If you've worked on cars, you already know much of this.
- The alternator charges the battery; the radiator and thermostat handle cooling.
- Learn symptoms — what a failing part actually does.
Format: Technical subtest · automobile technology · 4-option MCQ · CAT-ASVAB subtest