ASE certification is the auto repair industry's voluntary credential for technicians: you pass an ASE test and document qualifying work experience to earn certification in a specific area, from brakes and electrical systems to collision repair and parts counter work.
It is issued by the National Institute for Automotive Service Excellence, a non-profit the automotive industry established in 1972 — not by any government agency.
ASE's own program is voluntary, though Hawaii's mechanic license and California's vehicle safety systems technician license require ASE certificates.
What is ASE certification and who issues it?
ASE certification is a credential for automotive service professionals, issued by the National Institute for Automotive Service Excellence.
The organization was established by the automotive industry in 1972 as a non-profit and describes itself as an independent third party.
It is an industry body, not a government agency.
ASE says it was created in the early 1970s partly so the government would not license mechanic jobs — which is why the correct phrase is "ASE certified," never "ASE licensed."
The tests are not written by a single author, either.
ASE builds its certification tests in workshops with a national panel of industry professionals: working technicians, vehicle manufacturers, aftermarket manufacturers and educators.
ASE is based in Leesburg, Virginia.
Its Customer Care line, 800-390-6789, answers from 8 a.m. to 5 p.m. Eastern, Monday through Friday.
The organization has been in acquisition news, too: on June 30, 2026, ASE announced it had acquired WrenchWay, in a headline that framed the deal as "Expanding Its Role as the Industry's Workforce Platform."
What does ASE stand for?
The letters come from the organization's full name: the National Institute for Automotive Service Excellence.
"ASE" is drawn from the Automotive Service Excellence phrase inside that name, and you will see both the full name and the shorthand used in the industry.
In shop language, "ASE certified mechanic," "ASE certified technician" and "ASE automotive certification" all point to the same thing: a credential earned through ASE's own testing program.
What ASE certification means, practically: the technician has passed one or more ASE tests in a specific area and met the work-experience requirement attached to those tests.
It is not a state mechanic license and not a government credential.
How do you become ASE certified: test plus work experience
Two things earn the credential: you must pass an ASE test and have qualifying full-time, hands-on work experience — or a combination of formal training and experience.
How much experience you need varies by test.
For ASE's repair-technician tests, the experience requirement is one year of full-time work (or the part-time equivalent) for G1, ASE's Auto Maintenance and Light Repair test.
It is two years for A1–A9, B2–B5, F1, H1–H8, MIL2–MIL8, S1–S7 and T1–T8, and three years for the Advanced Level tests L1–L4.
Training can shorten the wait.
ASE's Need to Know guide says up to half of the experience requirement may be met by completing appropriate vocational training.
You also do not have to wait until the experience is on paper to test.
You can take most ASE tests before meeting the experience requirement — you receive a score report, but no certification or certificate until the experience requirement is fulfilled.
Once you are ready, ASE's sequence runs:
Create a free myASE account
ASE's registration flow starts in the myASE portal.Register for your test
Pick the test or tests you want to sit.Submit your work experience
Send ASE the relevant hands-on work experience.Take the test within 90 days
ASE gives you 90 days from registering to take the test.Receive your certificate
Once the test is passed and the experience approved, a printed certificate arrives by mail.
Testing happens at nearly 500 secure, proctored test centers across the country, and, except for G1, initial certification tests are taken at test centers.
The remote options today are specific: the no-appointment ASE Flex Test covers initial and recertification G1, while Prometric ProProctor remote testing covers the other recertification tests.
Fees, windows and formats change — confirm with ASE
Which ASE test series exist (A, G1, L, B, C1, P, T)?
ASE says there are over 50 certification tests, grouped by sub-specialty: automobile, medium/heavy truck, school bus, collision repair and more.
Its current test series for 2026:
- A1–A9 — Automobile & Light Truck.
- B2–B5 — Collision Repair & Refinish.
- B6 — Damage Analysis & Estimating.
- C1 — Automobile Service Consultant.
- F1 — Alternate Fuels (CNG).
- G1 — Auto Maintenance & Light Repair.
- H1–H8 — Transit Bus.
- L1–L4 — Advanced Level tests.
- MIL1–MIL8 — Military Tactical Wheeled Vehicle.
- P1–P2 — Parts Specialist.
- S1–S7 — School Bus.
- T1–T8 — Medium-Heavy Truck.
For car and light-truck work, the relevant series are A1–A9 and the G1 maintenance and light repair test.
Collision shops test through the B-series, parts counters through P1–P2, and service writers through C1.
Fees depend on the test.
ASE's 2026 fees are $34 registration per order, plus $62 per general test and $124 per Advanced Level (L1–L4) test.
Within the A-series, technicians certified in A1 through A8 are recognized as ASE Master Automobile Technicians — A9 (Light Vehicle Diesel Engines) is not required for that status.
Master status also exists in the collision, transit bus, medium/heavy truck and school bus series.
How long does ASE certification last?
Five years.
ASE certification credentials are valid for five years, and after five years you take the corresponding recertification test.
Expiration dates appear on the certificate and in myASE.
Recertification tests run shorter than the originals — usually about half the number of questions.
If a certification has already expired, you may still take the recertification test as long as you were previously certified in that specialty — ASE's recertification pages we read publish no grace period or lockout.
Recertifying early does not carry over the remaining time, either: the new expiration is five years from the recertification date.
Master status has to be maintained like any other certification.
Each required certification must be kept current — if one lapses, Master status is lost and can be reinstated by passing the recertification test.
Is ASE certification required to work as a mechanic?
Not under ASE's own rules.
ASE's official guide calls its program "ASE's voluntary certification" — ASE does not make its certificate a condition of working on cars, though some state licenses do (below).
It is a private credential, not a government license.
ASE says it was created in the early 1970s partly so the government would not license mechanic jobs — the industry built its own way to prove skill instead.
Voluntary is not the same as optional in hiring.
Individual shops set their own requirements, and automakers' brand training programs set their own ASE test requirements.
Those are employer and program rules, not law — the job posting or the program's own materials tell you what a specific employer asks for.
State licensing is where ASE can become a legal prerequisite.
Hawaii's mechanic license requires ASE certification in one or more areas, with a copy of the current ASE certificate submitted.
California's vehicle safety systems technician license requires ASE A4, A5 and A6.
Michigan works the other way: ASE certification alone does not let you repair vehicles for pay there, and you still need state certification, but matching ASE categories can be transferred in place of the state tests.
If you are weighing the trade itself — the work, the settings, the pay — the automotive technician career guide covers the role end to end.
Voluntary credential, employer rules
Why do shops and dealerships ask for ASE certs?
ASE's own guide describes its certification as helping automotive professionals prove their knowledge to themselves, to their employers and to their customers.
For an employer, that proof answers a hiring question: what can this technician carry without supervision?
There is a business-level version too.
ASE's Blue Seal of Excellence program recognizes repair businesses — dealerships, independent shops and fleet garages.
Recognition requires at least 75% of the technicians performing diagnosis and repairs to be ASE Certified, with each area of service offered covered by at least one ASE Certified technician.
Parts businesses have their own track: at least 75% of parts counterpersons ASE Certified, with each area of service covered.
ASE certifies people, not shops.
It describes Blue Seal as a business recognition, not a state license and not a requirement to operate — the certification itself always belongs to the individual technician.
Verification runs through ASE as well.
An employer can request a certification status letter free of charge using ASE's Certification Status Request Form, which requires the technician's ASE ID number.
Shops can also manage their employees' ASE certifications inside myASE once ASE approves them as the company's account manager.
Find jobs that want ASE-certified techs
Once you hold certifications — or while you are stacking experience toward them — make them easy to read.
List the specific test numbers on your resume and in applications: "A5 Brakes, A6 Electrical/Electronic Systems" tells a shop exactly what you can carry.
Then match those tests to openings.
Automotive technician jobs on AutoTechHires collect openings from repair shops, dealership service departments, tire stores and fleets.
Career information, not licensing, legal, tax, insurance or safety advice — confirm current certification requirements with ASE at ase.com.