Exam Comparison
ASE A-Series vs ASE L1
Comparing the ASE Automobile & Light Truck Certification (A-Series) and the ASE Advanced Engine Performance Specialist (L1). Both fall under Skilled Trades. Both are covered by the Trades Cert Exam Prep: ASE, NHIE, Electrician & Plumber app.
ASE A-Series vs ASE L1: At a Glance
| Detail | ASE A-Series | ASE L1 |
|---|---|---|
| Full Name | ASE Automobile & Light Truck Certification (A-Series) | ASE Advanced Engine Performance Specialist (L1) |
| Governing Body | ASE | ASE |
| Number of Questions | 45 | 50 |
| Time Limit | 45–60 minutes per test | 75 minutes |
| Passing Score | Varies by test (typically 38–45 correct) | Not disclosed |
| Exam Fee | $36 USD per test ($324 total for all 9) | $36 USD |
| Category | Skilled Trades | Skilled Trades |
| C3RT App | Trades Cert Exam Prep: ASE, NHIE, Electrician & Plumber Soon | Trades Cert Exam Prep: ASE, NHIE, Electrician & Plumber Soon |
Content Areas Compared
ASE A-Series Domains
- A1 — Engine Repair
- A2 — Automatic Transmission and Transaxle
- A3 — Manual Drive Train and Axles
- A4 — Steering and Suspension
- A5 — Brakes
- A6 — Electrical and Electronic Systems
- A7 — Heating and Air Conditioning
- A8 — Engine Performance
- A9 — Light Vehicle Diesel Engines
ASE L1 Domains
- Ignition System Diagnosis
- Fuel System Diagnosis
- Emission Control System Diagnosis
- Exhaust Gas Analysis
- Computer and On-Board Diagnostics
Frequently Asked Questions
What is the difference between ASE A-Series and ASE L1?
The ASE A-Series (ASE Automobile & Light Truck Certification (A-Series)) is administered by ASE and consists of 45 questions. The ASE L1 (ASE Advanced Engine Performance Specialist (L1)) is administered by ASE and consists of 50 questions. Both are Skilled Trades credentials.
Can I take both the ASE A-Series and the ASE L1?
Yes, the ASE A-Series and ASE L1 are separate credentials with separate eligibility requirements. Each is awarded by a different governing body (ASE and ASE respectively). Check the official requirements for each before registering.
Which should I take first, ASE A-Series or ASE L1?
The right sequence depends on your career goals and current credentials. The ASE A-Series is offered by ASE with a passing score of Varies by test (typically 38–45 correct), while the ASE L1 is offered by ASE with a passing score of Not disclosed. Review the eligibility requirements for each with the respective governing bodies before deciding.
Does C3RT cover both the ASE A-Series and the ASE L1?
C3RT is building apps for both the ASE A-Series and the ASE L1. Both will be available on iOS and Mac.
The ASE Automobile & Light Truck Certification (A-Series) (ASE A-Series) is administered by ASE. The ASE Advanced Engine Performance Specialist (L1) (ASE L1) is administered by ASE. C3RT is not affiliated with either organisation. Certification names and trademarks are the property of their respective owners.