NAPA Study Guide 2026
Everything you need to pass the NAPA exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 NAPA Exam Format at a Glance
📚 NAPA Topics to Study (63)
✍️ Sample NAPA Questions & Answers
1. After a turn, a vehicle keeps pulling in the direction of the last turn. This 'memory steer' is most likely caused by:
A binding strut bearing or tight joint keeps the wheels from returning to center after a turn.
2. A toe-out-on-turns (turning radius) reading is out of specification on one side. What is the most likely cause?
Toe-out on turns depends on steering arm geometry, so a bent steering arm throws it out of spec.
3. When should the parking brake be adjusted during a rear drum brake job?
Adjusting the parking brake before the shoes are set can hold the shoes off the anchor and cause dragging.
4. When testing a coil-on-plug ignition coil, the most effective way to confirm a misfire follows the coil is what?
If the misfire code moves to the new cylinder with the coil, the coil is confirmed faulty.
5. On a short-long arm (SLA) suspension with the coil spring on the lower control arm, which ball joint is load-carrying?
The ball joint on the arm that supports the spring carries the vehicle's weight.
6. A drive-by-wire throttle body is cleaned and the engine now idles erratically. What step is often required?
Many electronic throttle systems need an idle or throttle relearn after cleaning so the PCM learns the new airflow at closed throttle.
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📖 NAPA Guides & Articles
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- A timed, full-length NAPA mock exam — 85 questions in 120 minutes with a 70% pass mark, modeled on the official exam's question count and time limit, followed by a score report broken down by exam domain.
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