ASVAB Mechanical Comprehension: what it tests and how to study
Mechanical Comprehension is scored on the ASVAB but is not one of the four AFQT subtests. The official page describes it as testing knowledge of mechanical and physical principles.
Last updated · Published by Certloom Learning · Format facts are from officialasvab.com (checked 2026-11-12). The study approach is general advice from Certloom Learning, not official guidance.
What does Mechanical Comprehension cover?
Official description: “knowledge of mechanical and physical principles” (Official ASVAB: What to Expect (checked 2026-11-12)). Think levers, pulleys, gears, pressure and basic forces. The official site does not publish a topic list.
AptiStep does not cover Mechanical Comprehension. The app and this website focus on the four subjects that make up the AFQT (Arithmetic Reasoning, Mathematics Knowledge, Word Knowledge and Paragraph Comprehension). This page is an explainer from official sources, not a practice set. For official Mechanical Comprehension examples use the Official ASVAB: Sample Questions.
How is Mechanical Comprehension tested on the CAT-ASVAB and on paper?
On the computer version the official table lists 15 scored questions and up to 15 unscored tryout questions, with a time limit of 22 minutes without tryout questions or 42 minutes with them. On paper it has 25 questions in 19 minutes. Source: Official ASVAB: What to Expect (checked 2026-11-12).
How do I study for Mechanical Comprehension?
Study how simple machines trade force for distance. Worked example, not a test item: a lever with the pivot 1 foot from a load and you pushing 3 feet from the pivot gives you three times the force at the load, 3 ÷ 1 = 3, because the longer arm travels three times as far. Practice with the official samples for the diagram style.
Why does Mechanical Comprehension matter if it is not in the AFQT?
Mechanical Comprehension feeds the Mechanical line score for some jobs (Military.com, Air Force, checked 2026-11-12).
See ASVAB line scores and the AFQT explainer for how subtests combine.
Frequently asked questions
Is Mechanical Comprehension in the AFQT?
No.
Do I need physics?
School-level ideas help. The official site describes it as mechanical and physical principles.