PassProfessor’s ASE program is part of the expanding PassProfessor catalog. We are building a practice program mapped to ASE’s official Automobile & Light Truck tests, A1–A9. Join the notify list and we will email you when enrollment opens — then use this guide to plan your path to certification.
This program is part of the expanding PassProfessor catalog — join the notify list and we’ll email you when enrollment opens.
The ASE exams, in one paragraph
ASE — the National Institute for Automotive Service Excellence — certifies automotive professionals through separate, voluntary tests for each specialty area, and states that there are over 50 tests across its series. For technicians who diagnose, service, and repair cars, SUVs, and light-duty trucks (up to Class 3), the core series is the Automobile & Light Truck Certification Tests, A1 through A9: nine tests of 40 to 50 scored questions each, in 60 to 90 minutes, with 10 additional unscored research questions on every certification test. Passing a test is only half of certification — ASE must also approve your hands-on work experience, and each credential is valid for five years.
Who can take the ASE exams?
ASE keeps registration open and lets two requirements — the test and the experience record — do the certifying.
- You may test before you have the experience. Per ASE, you may register and take tests (the X1 test is the stated exception) before you have the necessary experience. If you do, you receive a score report, but you do not earn certification or receive a certificate until you fulfill the experience requirement.
- Experience is required, and the amount varies by test. To become ASE certified you must pass an ASE test and have full-time, hands-on work experience, or a combination of formal training and experience. ASE lists the requirement by certification type: Repair Technician — 1, 2, or 3 years, depending on the test; Parts Specialist — 2 years; Collision Damage Estimator — 2 years; Service Consultant — 2 years.
- Your experience must match the credential. ASE’s Work Experience Form has separate sections for different types of industry experience, and the experience must match the kind of certification sought — Repair Technician experience, for example, does not satisfy the requirements for the B6 Collision Damage Estimator, C1 Automobile Service Consultant, or P1/P2/P4 Parts Specialist credentials.
- Formal training can substitute for part of it. ASE states that you may receive credit for some of the work experience requirement by substituting relevant formal training, and that ASE reserves the right to evaluate substitution requests. For Canadian technicians, ASE accepts a valid provincial automotive trade certificate as evidence for the Repair Technician 1-year and 2-year requirements.
- Submit the form through myASE. ASE recommends submitting the work experience form after you have registered for a test, and notes that it does not have to be submitted before you test — but your certificate for a passed test will be delayed until the information is reviewed and approved.
One framing note: ASE certification is voluntary. It is an industry credential, not a state license, and ASE certifies individual technicians in each specialty they pass — there is no single “ASE exam” that certifies a technician in everything.
The exams, piece by piece
Each ASE test is a separate sitting with its own score. There is no combined A-Series exam and no requirement to take the tests in order — technicians commonly certify in the areas they work in first, then add tests over time.
The A Series: Automobile & Light Truck (A1–A9)
ASE’s stated objective for the series is to identify and recognize Automobile and Light Truck (up to Class 3) Technicians who can demonstrate knowledge of the skills necessary to diagnose, service, and repair cars, SUVs, and light duty trucks.
| Test | Name | Scored questions | Time allowed | Recertification test | Recert. scored questions | Recert. time |
|---|---|---|---|---|---|---|
| A1 | Engine Repair | 45 | 75 mins | A1R | 23 | 30 mins |
| A2 | Automatic Transmission/Transaxle | 45 | 75 mins | A2R | 23 | 30 mins |
| A3 | Manual Drive Train & Axles | 40 | 60 mins | A3R | 20 | 30 mins |
| A4 | Suspension & Steering | 40 | 60 mins | A4R | 20 | 30 mins |
| A5 | Brakes | 45 | 75 mins | A5R | 23 | 30 mins |
| A6 | Electrical/Electronic Systems | 50 | 90 mins | A6R | 25 | 45 mins |
| A7 | Heating & Air Conditioning | 50 | 75 mins | A7R | 25 | 30 mins |
| A8 | Engine Performance | 50 | 75 mins | A8R | 25 | 45 mins |
| A9 | Light Vehicle Diesel Engines | 50 | 75 mins | A9R | 25 | 30 mins |
Three structural facts that shape how you should prepare:
- Research questions ride along on every certification test. ASE adds 10 research questions that are not counted for score, and you are not told which questions they are. There is no way to spot or skip them — the only correct strategy is to answer every question, and to pace for the full on-screen count (scored plus 10), not just the scored count. Recertification tests carry no research questions.
- Master status is A1 through A8 — not A9. Per ASE, those who are certified in tests A1–A8 are recognized as ASE-Certified Master Automobile Technicians, and A9 is not a requirement for Master Automobile Technician status. A9 is a light-duty diesel specialty to add on its own merits.
- The tests are written by the industry, not by one author. Per ASE, its certification tests are written in workshops by a national panel of seasoned automotive industry professionals — working technicians, automobile manufacturers, aftermarket manufacturers, and educators. The task lists in ASE’s study guides are the published map of what each test covers.
Language. Tests A1–A9 and G1 are available in Spanish, per ASE. Tests A1 through A9 are intended for technicians who perform vehicle repairs; ASE offers the separate C1 test specifically for service consultants, who work with repair technicians and car owners.
Beyond the A Series
ASE’s tests are segmented by sub-specialty. As ASE publishes them, the other series are:
| Series | Tests | Who it recognizes |
|---|---|---|
| B Series — Collision Repair & Refinish | B2–B5 | Collision Repair Technicians and Refinishers who can properly analyze and repair automotive collision damage and correct paint finish damage |
| B Series — Damage Analysis & Estimating | B6 | Estimators who can properly analyze and estimate automotive collision damage |
| C Series — Service Consultant | C1 | Automobile Service Consultants, through voluntary testing of service consultant professionals |
| F Series — Alternate Fuels | F1 | Technicians who can diagnose, service, and repair compressed natural gas vehicles |
| G Series — Maintenance and Light Repair | G1 | Maintenance and Light Repair Technicians who can perform the most common maintenance and light repair tasks |
| H Series — Transit Bus | H1–H8 | Transit Bus Technicians who can diagnose, service, and repair various systems on transit buses |
| L Series — Advanced Level | L1, L2, L3, L4 | Advanced specialists: L1 Advanced Engine Performance, L2 Electronic Diesel Engine Diagnosis, L3 Light Duty Hybrid/Electric Vehicle, L4 Advanced Driver Assistance Systems (ADAS) |
| MIL Series — Military | MIL1–MIL8 | Technicians who can diagnose, service, and repair different systems of military tactical wheeled vehicles |
| P Series — Parts Specialist | P1–P2 | Automobile and Medium-Heavy Truck Parts Specialists |
| S Series — School Bus | S1–S7 | School Bus Technicians who can diagnose, service, and repair subsystems of Type A, B, C, and D school buses |
| T Series — Medium-Heavy Truck | T1–T8 | Medium and Heavy Truck Technicians who can diagnose, service, and repair systems of Class 4 through Class 8 trucks and tractors |
This guide covers the A Series in depth because it is the series most technicians start with and the series the PassProfessor program in development is being built on. Each other series has its own ASE page and study guide with its test specifications and task lists.
The passing standard, explained
ASE does not publish a single passing percentage that applies across its tests, and the official ASE pages behind this guide state no numeric cut score — so this guide prints none, deliberately.
What that means in practice:
- Be skeptical of a universal number. Study sites commonly attach one percentage to every ASE test. ASE’s own published material for the A Series specifies questions, times, experience, and validity in detail — and no percentage. Treat any single figure applied to all 50-plus tests as that site’s claim, not ASE’s standard.
- Prepare test by test, across the whole task list. The defensible target is consistent strength across every task area of the specific test you are sitting — A6’s 50 scored questions are not A3’s 40, and strength in one system does not carry into another test’s sitting. Each test produces its own result.
- Your score report is the official result. If you test before completing your experience requirement, ASE is explicit that the score report is what you receive; certification and the certificate follow only after your experience is approved. Passing the test and holding the credential are related but separate events, and a study plan should treat the paperwork as part of the process, not an afterthought.
Fees and registration, step by step
What the tests cost. ASE charges a test fee for each test purchased, plus a registration fee charged per order (not per test). ASE publishes its current figures on its Register Now page (“Registration Dates and Fees”) at ase.com — check that page when you register rather than relying on a dollar figure printed in any guide, including this one: fees are the figure most likely to have changed since a page was written, and this guide deliberately does not print one that could be stale by the time you read it.
Registration runs in four windows a year. ASE’s published 2026 registration dates are:
| Window | 2026 registration dates |
|---|---|
| Winter Registration | January 10, 2026 – March 31, 2026 |
| Spring Registration | April 10, 2026 – June 30, 2026 |
| Summer Registration | July 10, 2026 – September 30, 2026 |
| Fall Registration | October 10, 2026 – December 31, 2026 |
The sequence, in order:
- Create your myASE account and purchase your test. Per ASE, purchasing and scheduling are done by logging in to your myASE account: select the test you want to take and pay the applicable fees (the test fee, plus the per-order registration fee). Visit my.ase.com to get started.
- Use your 90-day window. Once you have purchased a test, you have 90 days from the original date of purchase to schedule an appointment and take the test. That clock starts at purchase, which is why step order matters: prepare first, buy when you are nearly ready.
- Choose how you will test. ASE lists three testing options: in person at a Prometric test center; online remote testing, at home or work, for those eligible; and the ASE Renewal App for those recertifying their A-Series certifications.
- Review the study guide for your test. ASE’s third step in its own process is to review the ASE Study Guide — for the A Series, the Automobile & Light Truck Study Guide (tests A1–A9), which contains the test specifications, task lists, sample test questions, and training resources for each test.
- Submit your work experience. After registering, submit the work experience form through myASE (the detailed requirements are at ASE’s work experience page). Approval is what turns a passing score into a certification — and ASE warns that a passed test’s certificate is delayed until the review is complete.
- Take the test. Sit the test inside your 90-day window, answer every question (the 10 research questions are unmarked), and keep your result with your myASE record — it is the starting point for either your certificate or a retake plan.
Changing or cancelling. Per ASE, if you wish to change your test date or time you must first cancel the existing appointment before scheduling a new one, and no changes are allowed within three days of your scheduled appointment. To cancel a test entirely, cancel any existing appointment first and then cancel the test; within three days of the appointment, neither can be cancelled. Changes are made through myASE, or by calling ASE Customer Care at 800-390-6789 (8 a.m.–5 p.m. Eastern, Monday–Friday).
Retakes and score validity
- Retaking a test. If you do not pass, the test must be purchased and scheduled again through myASE — and ASE’s published process gives each purchase its own 90-day window. Before re-buying, rebuild the study plan around the task areas the attempt exposed; a second sitting with the same preparation usually produces the same result. (This guide prints no waiting-period interval: ASE’s pages behind this guide do not state one, and any interval in ASE’s current rules should be confirmed in myASE when you re-register — see the internal notes in this package’s source file.)
- Score and certification validity. Certification credentials are valid for five years, per ASE — you can find your expiration dates on your certificates or in myASE. The five-year cycle is how ASE keeps certified professionals current in a rapidly changing industry.
- Recertification tests are shorter. The A-Series recertification tests (A1R–A9R) are about half as long as the initial certification tests (20–25 scored questions, 30–45 minutes — see the table above) and include no research questions. You are only eligible for a recertification test if you have previously passed the corresponding initial certification test.
- Expired credentials can still be recertified. Per ASE, you may take the recertification tests even if your credentials have expired, provided you were previously certified in that specialty area. You may recertify any or all of your areas, including ones expiring at different times.
- Early recertification restarts the clock. If you recertify early, you are not credited with the time remaining on your original certification — the new expiration date is five years from the date of your recertification. Time a recertification purchase with that rule in mind.
- The Renewal App alternative. For A-Series certifications, ASE also lists the ASE Renewal App as a recertification testing option, alongside Prometric test centers and eligible remote testing — a second route worth comparing in myASE before your expiration dates arrive if you hold A-Series credentials.
Test day
- Know which delivery you booked. In-person tests are taken at a Prometric test center; eligible candidates may test online remotely at home or work. The check-in, workspace, and proctoring expectations differ by delivery — follow the instructions attached to your appointment in myASE, not generic advice.
- Pace for scored plus research questions. An A5 sitting is 45 scored questions plus 10 research questions in 75 minutes. That is roughly a minute and twenty seconds per on-screen question. Flag-and-return discipline matters: a hard diagnosis item costs the same minutes whether you settle it now or after the ones you know.
- Answer every question. The research questions are unidentified and unscored, but there is no way to know which ones they are — ASE’s own instruction is that you should answer every question. An unanswered scored question is a certain miss; an answered research question costs nothing.
- Changes have a hard deadline. No appointment changes are allowed within three days of your scheduled appointment. If a work emergency is going to collide with your test date, act before that line, through myASE or ASE Customer Care (800-390-6789, 8 a.m.–5 p.m. Eastern, Monday–Friday).
- After the test, finish the certification. Keep your score report, and make sure your work experience submission is complete and approved — until it is, a passing score has not yet become a credential you can show an employer.
How to study for these exams
ASE publishes exactly what each test covers: the study guide for each series contains the test specifications and task lists the exam is built from. A plan built on that structure:
- Start from the task list, not a table of contents. Download the Automobile & Light Truck Study Guide for A1–A9 from ASE and use the task list for your target test as a checklist. If a task is on that list, it is fair game; ASE also includes sample test questions and training resources in the same guide.
- Prepare one test at a time. The A tests do not average together. A technician strong in brakes still sits A6 on electrical alone. Sequence your tests — many technicians take the areas they work in daily first, where hands-on experience reinforces the study, and schedule the less familiar systems with more lead time.
- Learn diagnosis as decisions, not facts. ASE items characteristically present a concern, a symptom, or a test result and ask for the next step or the likely cause — including the Technician A / Technician B format, where you judge two statements independently. Study by working scenarios: given this reading and this symptom, what do you check next, and why?
- Respect A6’s clock and scope. At 50 scored questions in 90 minutes, A6 is the longest A test, and electrical diagnosis underpins A8 and the advanced L tests as well. Circuit reasoning — voltage drop, resistance, and diagram tracing — repays more study time than component memorization.
- Practice at full length, against the real clock. Fifty scored questions plus 10 research questions is 60 decisions in 75 minutes on A7, A8, and A9. Full timed practice at the real length builds pacing that short quizzes cannot.
- Run the paperwork in parallel. Create the myASE account, start the work experience form, and note your target registration window while you study — not after you pass. ASE’s 90-day purchase window and the experience-approval step both reward candidates who start them early.
- Schedule when your practice says so — timed, full-length practice consistently strong across every task area of your target test — and buy the test only when you can use the 90 days that follow.
PassProfessor’s ASE program is being built test-by-test on this same A-Series structure. The ASE Exam Prep program page shows the coverage plan — and the notify list there will email you when the program opens.
Frequently asked questions
How many questions are on an ASE test? For the A Series, 40 to 50 scored questions depending on the test — A3 and A4 have 40; A1, A2, and A5 have 45; A6, A7, A8, and A9 have 50 — plus 10 research questions that do not count toward your score and are not identified. Time allowed runs from 60 minutes (A3, A4) to 90 minutes (A6); the other A tests allow 75 minutes.
What is the passing score for ASE tests? ASE does not publish a single passing percentage that applies across its tests, and its official A-Series material states no numeric cut score. Prepare to be consistently strong across every task area of the specific test you are taking, and treat your official score report as the result that counts — not a percentage promised by any study site.
Do I need work experience to take an ASE test? You need the experience to be certified, not to sit most tests. Per ASE, you may register and take tests (except X1) before you have the necessary experience and you will receive a score report, but certification and your certificate wait until ASE approves your experience: 1, 2, or 3 years for Repair Technician certifications depending on the test, and 2 years for Parts Specialist, Collision Damage Estimator, and Service Consultant certifications. Relevant formal training can substitute for part of the requirement.
How do I become an ASE Master Automobile Technician? Per ASE, technicians certified in tests A1 through A8 are recognized as ASE-Certified Master Automobile Technicians. A9 is not required for that status. Each of the eight certifications requires both its test and ASE-approved experience, and each must be kept current — if a required certification lapses, recertify it to restore the standing.
How long does ASE certification last? Five years. Per ASE, certification credentials are valid for five years, with expiration dates shown on your certificates and in myASE. Technicians retest to retain certification, using the shorter recertification tests where eligible.
What is the difference between a certification test and a recertification test? Length and research questions. A-Series recertification tests (A1R–A9R) are about half as long as the initial tests — 20 to 25 scored questions in 30 to 45 minutes — and include no research questions. You can only take a recertification test if you previously passed the corresponding initial certification test, and you may take it even after the credential has expired.
If I recertify early, does my new five years start when the old one expires? No. Per ASE, if you recertify early you are not credited with the time remaining on your original certification — the new expiration date is five years from the date of your recertification.
How do I register for an ASE test? Through your myASE account: select the test, pay the applicable fees (a test fee plus a registration fee charged per order), and schedule. Registration runs in four windows a year — in 2026, January 10–March 31, April 10–June 30, July 10–September 30, and October 10–December 31 — and once you purchase a test you have 90 days from the purchase date to schedule and take it.
How much does an ASE test cost? ASE charges a test fee per test plus a registration fee per order, and publishes the current figures on its Register Now page at ase.com. Check that page when you register: this guide prints no dollar figure because fees change, and a stale figure in a guide is worse than none.
Can I take the ASE tests online? Per ASE, the testing options are in-person testing at a Prometric test center, online remote testing at home or work for those eligible, and the ASE Renewal App for those recertifying A-Series certifications. Eligibility for remote testing is determined through ASE — check your options in myASE.
Can I take the A tests in Spanish? Yes. Per ASE, tests A1–A9 and G1 are available in Spanish.
What happens if I fail an ASE test? You purchase and schedule the test again through myASE, inside a registration window and a new 90-day window. Use the attempt diagnostically: rebuild preparation around the task areas where the sitting was lost rather than repeating the same plan. Confirm any current waiting-period rule in myASE when you re-register.
Can I change or cancel my ASE test appointment? Yes, with limits. Per ASE, you must cancel the existing appointment before scheduling a new one, and no changes are allowed within three days of the scheduled appointment. To cancel a test, cancel the appointment first, then the test. Changes are made in myASE or through ASE Customer Care at 800-390-6789.
Who writes the ASE tests? Per ASE, its certification tests are written in workshops by a national panel of seasoned automotive industry professionals, including working technicians, automobile manufacturers, aftermarket manufacturers, and educators — not by any single person at ASE.
Disclaimer
PassProfessor is an independent exam-preparation provider and is not affiliated with, sponsored by, or endorsed by the National Institute for Automotive Service Excellence. ASE® and Automotive Service Excellence are marks of the National Institute for Automotive Service Excellence. This guide is general information about the ASE certification tests, current as of October 2026; ASE’s official publications govern if anything here differs from them.