ASE certification is the industry-standard credential for automotive service professionals, awarded by the National Institute for Automotive Service Excellence (ASE) — an independent, non-profit organization.[1] Rather than one giant exam, ASE certifies you in specific areas through separate tests: engine repair, brakes, electrical systems, collision refinishing, medium/heavy truck diesel, and many more. This page gathers free practice tests for all 29 ASE certifications we cover, each modeled on the official ASE task lists with realistic questions and answer explanations.
ASE tests are organized into series by job role and vehicle type. The A-series (A1–A9) covers automobile and light-truck repair; the B-series covers collision repair and refinishing; C1 certifies automobile service consultants; G1 is the entry-level maintenance and light-repair test; the L-series covers advanced specialist diagnosis (engine performance, diesel, hybrid/EV, and ADAS); the T-series covers medium and heavy trucks; and X1 is the undercar exhaust-systems specialty. Pass enough tests within a series and you earn ASE Master Technician status.
ASE Tests at a Glance
| Detail | ASE Certification Tests |
|---|---|
| Certifying Body | ASE — National Institute for Automotive Service Excellence |
| Delivery | Computer-based, proctored at Prometric test centers |
| Cost | ~34 registration per order; advanced L-series ~$124 per test |
| Scoring | Scaled score (no fixed passing percentage) |
| Experience | ~2 years hands-on, or 1 year plus a relevant 2-year degree/training |
| Recertification | Required every 5 years via a shorter recert test |
All 29 ASE Practice Tests
Choose your test below. Tests are grouped by ASE series — pick a single certification to drill, or work through a whole series to build toward Master status. Each links to a free, full-length practice test with answer explanations.
A-Series — Automobile & Light Truck
The core A-series — the tests behind the Automobile Master Technician status.
| Test | Focus | Questions | Time | Open |
|---|---|---|---|---|
| A1 Practice Test | Engine Repair | 50 scored | 75 min | Start test |
| A2 Practice Test | Automatic Transmission/Transaxle | 50 scored | 75 min | Start test |
| A3 Practice Test | Manual Drive Train and Axles | 40 scored | 60 min | Start test |
| A4 Practice Test | Suspension and Steering | 40 scored | 60 min | Start test |
| A5 Practice Test | Brakes | 45 scored | 75 min | Start test |
| A6 Practice Test | Electrical/Electronic Systems | 50 scored | 75 min | Start test |
| A7 Practice Test | Heating and Air Conditioning | 50 scored | 75 min | Start test |
| A8 Practice Test | Engine Performance | 50 scored | 75 min | Start test |
| A9 Practice Test | Light Vehicle Diesel Engines | 50 scored | 75 min | Start test |
B-Series — Collision Repair & Refinish
Body, structural, refinishing, and damage-estimating certifications.
| Test | Focus | Questions | Time | Open |
|---|---|---|---|---|
| B2 Practice Test | Painting and Refinishing | 55 scored | 90 min | Start test |
| B3 Practice Test | Non-Structural Analysis and Damage Repair | 55 scored | 90 min | Start test |
| B4 Practice Test | Structural Analysis and Damage Repair | 50 scored | 75 min | Start test |
| B5 Practice Test | Mechanical and Electrical Components | 50 scored | 75 min | Start test |
| B6 Practice Test | Damage Analysis and Estimating | 50 scored | 75 min | Start test |
C-Series — Service Consultant
The service-advisor certification (non-technician).
| Test | Focus | Questions | Time | Open |
|---|---|---|---|---|
| C1 Practice Test | Automobile Service Consultant | 50 scored | 75 min | Start test |
G-Series — Maintenance & Light Repair
Entry-level maintenance and light-repair certification.
| Test | Focus | Questions | Time | Open |
|---|---|---|---|---|
| G1 Practice Test | Auto Maintenance and Light Repair | 45 scored | 90 min | Start test |
L-Series — Advanced Level
Advanced specialist tests — engine performance, diesel, hybrid/EV, ADAS.
| Test | Focus | Questions | Time | Open |
|---|---|---|---|---|
| L1 Practice Test | Advanced Engine Performance Specialist | 50 scored | 150 min | Start test |
| L2 Practice Test | Electronic Diesel Engine Diagnosis Specialist | 45 scored | 120 min | Start test |
| L3 Practice Test | Light Duty Hybrid/Electric Vehicle Specialist | 45 scored | 120 min | Start test |
| L4 Practice Test | Advanced Driver Assistance Systems (ADAS) Specialist | 40 scored | 120 min | Start test |
T-Series — Medium/Heavy Truck
Truck-specific certifications behind Master Medium/Heavy Truck status.
| Test | Focus | Questions | Time | Open |
|---|---|---|---|---|
| T1 Practice Test | Gasoline Engines (Medium/Heavy Truck) | 50 scored | 75 min | Start test |
| T2 Practice Test | Diesel Engines (Medium/Heavy Truck) | 50 scored | 75 min | Start test |
| T3 Practice Test | Drive Train (Medium/Heavy Truck) | 40 scored | 60 min | Start test |
| T4 Practice Test | Brakes (Medium/Heavy Truck) | 50 scored | 75 min | Start test |
| T5 Practice Test | Suspension and Steering (Medium/Heavy Truck) | 50 scored | 75 min | Start test |
| T6 Practice Test | Electrical/Electronic Systems (Medium/Heavy Truck) | 50 scored | 90 min | Start test |
| T7 Practice Test | Heating, Ventilation & Air Conditioning (Medium/Heavy Truck) | 40 scored | 60 min | Start test |
| T8 Practice Test | Preventive Maintenance Inspection (PMI) (Medium/Heavy Truck) | 50 scored | 75 min | Start test |
X-Series — Undercar Specialist
Exhaust-systems specialty certification.
| Test | Focus | Questions | Time | Open |
|---|---|---|---|---|
| X1 Practice Test | Undercar Specialist Exhaust Systems | 40 scored | 60 min | Start test |
ASE Master Technician Status
ASE Master Technician status is earned by passing a defined set of tests within a series — it’s the recognized mark of a well-rounded, fully certified technician. The three most common Master designations are:
- Automobile Master Technician — pass A1 through A8 (engine repair, transmission, drivetrain, suspension and steering, brakes, electrical, heating and A/C, and engine performance). A9 (light-vehicle diesel) is a separate certification.
- Master Collision Repair & Refinish Technician — pass the defined B-series set covering refinishing, non-structural and structural damage repair, mechanical and electrical components, and damage estimating.
- Master Medium/Heavy Truck Technician — pass the defined T-series set covering truck engines, drivetrain, brakes, suspension and steering, electrical, HVAC, and preventive maintenance.
Because each underlying certification expires every five years, maintaining Master status means keeping every test in the set current through recertification.[4]
How ASE Testing Works
You register and pay through your myASE account at myASE.com, then schedule your test at a Prometric test center (or via approved remote proctoring where available).[5][3] Most certification tests cost about $62 each plus a $34 registration fee per order, while the advanced L-series runs roughly $124 per test.[3] Tests are delivered on a computer and scored on a scaled basis rather than a fixed passing percentage, so the standard stays consistent across test versions.
Certification requires about two years of hands-on work experience; up to one year can be substituted with a relevant two-year degree or formal training. You can pass the test before meeting the experience requirement — certification is granted once both are documented.[2] Every ASE certification expires after five years, and you keep it current by passing a shorter recertification test before it lapses.[4]
How to Use These Practice Tests
- Diagnose weak task areas. Take a full practice test for your target certification first to see which task areas (the official ASE content sections) need work.
- Drill, then re-test. Focus your study on the areas you missed, then take the test again to confirm the gains before exam day.
- Simulate the real timing. Each test lists its real question count and time limit — practice under the same clock so the pace feels routine.
- Learn the reasoning. Read every answer explanation. On the real ASE tests, many items are scenario-based (“Technician A says... Technician B says...”), so understanding the logic matters more than memorizing.
- Build toward Master status. If you’re pursuing a Master designation, work through every test in the series rather than just your strongest areas.
ASE Practice Test FAQ
ASE certification is administered by the National Institute for Automotive Service Excellence (ASE), an independent, non-profit organization. It is the industry-standard credential for automotive service professionals, with separate tests covering specific repair areas such as engines, brakes, electrical systems, collision repair, and medium/heavy truck systems. Passing a test plus meeting the work-experience requirement earns certification in that area.
There are dozens of ASE certification tests organized into series. Career Employer offers free practice tests for 29 of them. Most automobile technicians start with the A-series (A1–A9). Which tests you take depends on your specialty: collision techs take the B-series, service advisors take C1, truck techs take the T-series, and experienced specialists pursue the advanced L-series. You can take a single test or build toward Master status.
Most ASE certification tests cost about $62 each, plus a $34 registration fee per order (one registration fee covers multiple tests scheduled together). The advanced L-series tests cost more — roughly $124 each. Always confirm current pricing on ase.com, as fees can change.
ASE tests are scored on a scaled basis rather than a fixed passing percentage. Your raw score is converted to a scaled score, and ASE sets the passing standard so it stays consistent across different versions of a test. There is no published "X percent correct" passing line; your score report simply indicates whether you passed.
ASE requires about two years of relevant hands-on work experience to become certified. You can substitute up to one year of that requirement with a relevant two-year degree or formal training program. You may sit for and pass the tests before meeting the experience requirement — certification is awarded once both the test and the experience are documented.
ASE certifications expire every five years. To stay certified, you must pass a shorter recertification test in each area before it expires. Recertification tests cover current technology and best practices so your credential reflects up-to-date knowledge.
The A-series (A1–A9) covers automobile and light-truck repair and is the foundation for Automobile Master Technician status. The B-series covers collision repair and refinishing — body, structural, mechanical, and damage-estimating work — and leads to Master Collision Repair status. The T-series covers medium and heavy trucks (diesel engines, air brakes, and more) and leads to Master Medium/Heavy Truck status.
Yes. Every ASE practice test on Career Employer is completely free, with no account required. Each test gives you realistic questions modeled on the official ASE task lists, instant scoring, and answer explanations so you can learn the reasoning behind every answer.
References
- 1.ASE. “National Institute for Automotive Service Excellence.” ase.com, 2026. ↑
- 2.ASE. “Test Series Overview.” ase.com, 2026. ↑
- 3.ASE. “Dates, Fees & Test Times.” ase.com, 2026. ↑
- 4.ASE. “Recertification Testing.” ase.com, 2026. ↑
- 5.ASE. “myASE Account & Registration.” myase.com, 2026. ↑
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