You will find a button that gives you full access to the ASE L1 practice test at the top of this page. In addition, we have provided you with comprehensive practice exams for the ASE L1 below this section. As you work through these tests. You will be able to tell your strong points, determine your strong areas, determine which areas need more attention, and your proficiencies. 

To help you in your preparation journey, we have offered special quizzes that pay more attention to specific areas of the ASE L1 exam, which will allow you to practice intensively in the specific areas that need more attention.

ASE L1 Domain Exams

The ASE L1 exam, also known as the Advanced Engine Performance Specialist Certification Exam, is designed for technicians with advanced engine performance and driveability knowledge. This exam covers various domains related to powertrain systems. 

Here’s a breakdown of the different areas of the ASE L1 exam:

ASE L1 General Powertrain Diagnosis Practice Exam 

  • Exam percentage: 12%
  • Number of questions: 6 questions
  • Focus: It includes questions on diagnosing problems related to engine mechanical, lubrication, cooling systems, and different types of driveability issues.

Welcome to your ASE L1 Domain 1: General Powertrain Diagnosis

ASE L1 Computerized Powertrain Controls Diagnosis (including OBD II) Practice Exam 

  • Exam percentage: 32%
  • Number of questions: 16 questions
  • Focus: It focuses on diagnosing issues with computerized engine controls, including sensors, actuators, and OBD II systems.

Welcome to your ASE L1 Domain 2: Computerized Powertrain Controls Diagnosis

ASE L1 Ignition System Diagnosis Practice Exam 

  • Exam percentage: 12%
  • Number of questions: 6 questions
  • Focus: It involves diagnosing problems with different types of ignition systems, including electronic ignition and distributorless systems.

Welcome to your ASE L1 Domain 3: Ignition System Diagnosis

ASE L1 Fuel Systems and Air Induction Systems Diagnosis Practice Exam 

  • Exam percentage: 16%
  • Number of questions: 8 questions
  • Focus: Questions revolve around diagnosing fuel system components and air induction systems, including fuel injection and carburetors.

Welcome to your ASE L1 Domain 4: Fuel Systems and Air Induction Systems Diagnosis

ASE L1 Emission Control Systems Diagnosis Practice Exam 

  • Exam percentage: 16%
  • Number of questions: 8 questions
  • Focus: It includes diagnosing emission control systems, such as EGR, EVAP, and catalytic converters.

Welcome to your ASE L1 Domain 5: Emission Control Systems Diagnosis

ASE L1 I/M Failure Diagnosis Practice Exam 

  • Exam percentage: 12%
  • Number of questions: 6 questions
  • Focus: It focuses on diagnosing vehicles that have failed Inspection/Maintenance (I/M) tests.

Welcome to your ASE L1 Domain 6: I/M Failure Diagnosis

Exam DomainPercentage# of QuestionsDescription
General Powertrain Diagnosis12%6Diagnosing problems related to engine mechanical, lubrication, cooling systems, and driveability issues.
Computerized Powertrain Controls Diagnosis (including OBD II)32%16Diagnosing issues with computerized engine controls, including sensors, actuators, and OBD II systems.
Ignition System Diagnosis12%6Diagnosing problems with different types of ignition systems, including electronic ignition and distributorless systems.
Fuel Systems and Air Induction Systems Diagnosis16%8Diagnosing fuel system components and air induction systems, including fuel injection and carburetors.
Emission Control Systems Diagnosis16%8Diagnosing emission control systems, such as EGR, EVAP, and catalytic converters.
I/M Failure Diagnosis12%6Diagnosing vehicles that have failed Inspection/Maintenance (I/M) tests.

Additional Important Information:

  • The ASE L1 exam typically contains 60 multiple-choice questions.
  • The exam duration is usually 2 hours.
  • A passing score is required to earn the ASE L1 certification.
  • It’s recommended to have hands-on experience and in-depth knowledge in the field.
  • Preparation materials and practice tests are available through the ASE website.
  • Recertification is required every five years to maintain the L1 credential.

ASE L1 Exam Breakdown

The ASE L1 exam is designed for individuals who have experience in the automotive service industry, particularly in the area of advanced engine performance diagnostics and repair. 

Here’s a breakdown of the key aspects of the ASE L1 Exam:

  • Purpose and Target Audience: The ASE L1 certification is intended for technicians who diagnose and repair complex engine performance issues in automobiles, light trucks, and SUVs. It’s aimed at professionals with significant experience in this field.
  • Eligibility Requirements: To be eligible to take the L1 exam, candidates must have passed the ASE A8 (Engine Performance) exam and have three years of hands-on working experience in engine performance. This ensures that only qualified and experienced technicians attempt the L1 certification.
  • Exam Content: The L1 exam focuses on various aspects of advanced engine diagnostics, including:
    • Computerized engine controls, sensors, and actuators.
    • Diagnosis of drivability issues and emissions failures.
    • Understanding of fuel, ignition, and emissions systems.
    • Use of diagnostic tools like scan tools, oscilloscopes, and other test equipment.
    • Knowledge of OBD-II (On-Board Diagnostics) systems.
  • Format of the Exam: The exam typically consists of multiple-choice questions that test both theoretical knowledge and practical skills in engine performance diagnostics. The number of questions and the exact format can vary, so it’s advisable to check the latest exam guide for details.
  • Preparation: Candidates often prepare for the exam through a combination of hands-on experience, studying ASE test preparation materials, and attending training courses or workshops. ASE offers study guides and practice tests to help candidates prepare.
  • Certification Validity: Once a technician passes the L1 exam, the certification is valid for five years. After this period, retesting is required to maintain the certification.
  • Benefits of Certification: Holding an ASE L1 certification can lead to better job opportunities, higher pay, and recognition as an expert in advanced engine performance diagnostics and repair.
  • Registration and Fees: Candidates must register for the exam through the ASE website and pay the required fee. It’s important to check for any updates or changes in the registration process or fees.
  • Test Centers and Scheduling: The ASE L1 exam is administered at various authorized test centers. Candidates can schedule their exams at a convenient time and location through the ASE website.
  • Continuing Education: ASE certified professionals often engage in ongoing education and training to stay current with evolving automotive technologies and maintain their expertise.

How to be ASE L1 certified

Becoming ASE L1 certified involves a structured process that combines both theoretical knowledge and practical experience. 

Here’s a step-by-step guide to help you achieve this certification:

  • Determine Your Specialty: ASE certification covers a range of automotive specialties. For L1 certification, the focus is on Advanced Engine Performance. Understanding your specialty area is crucial as it dictates the exams you will need to take.
  • Gain Relevant Work Experience: ASE certification requires a blend of formal education and hands-on work experience. Generally, you need two years of on-the-job experience. This duration can be reduced if you have formal automotive training.
  • Obtain Study Materials: ASE offers official study guides and practice tests for each specialty. These materials are critical for preparing for the certification exams and are available for purchase directly from the ASE website or authorized retailers.
  • Study and Prepare: Dedicate significant time to studying the materials and practicing with sample questions. You might also consider enrolling in an ASE test preparation course if available. Online resources and study groups can also be beneficial.
  • Schedule Your Exams: Exams can be scheduled year-round. When registering for an ASE test, you have 90 days to schedule an appointment and take your test at a test center. The registration for tests costs $36, and each test has a specific fee, with the L1, L2, and L3 tests costing USD 74 each​​.
  • Take the Exams: Arrive at the test center early, bringing the required identification and any other materials specified by ASE. The exams are typically computer-based, consisting of multiple-choice questions.
  • Receive Your Scores: You will receive your scores immediately for computer-based tests. Upon passing, you’ll get a certificate and a shoulder insignia to display your ASE certification.
  • Maintain Your Certification: ASE certification needs to be renewed every five years. Continuing education and staying updated on industry advancements are essential to maintain your skills and certification.

Additionally, you must complete a work experience reporting form and have it verified by ASE to receive your certification. This form requires details about your current and previous employment, specifically covering areas where you have professional experience. ASE will verify your work experience before issuing your certification​​.

Our Experience Teaching ASE L1 Candidates To Pass The Exam

Developing the ASE L1 practice exams has given us its fair share of challenges as well as rewarding opportunities. Our coaching journey at Career Employer in this automotive field has been shaped by the exam series scope, and the unique students’ needs, all while aiming at exam success. 

Here are some key aspects:

  • In-depth Knowledge of Advanced Engine Performance: As an instructor, you need a comprehensive understanding of engine performance, including computerized engine controls and advanced diagnostics. This knowledge is crucial because the ASE L1 Certification focuses on light vehicle diesel engines, alternative fuels, and advanced electronics systems.
  • Practical and Theoretical Knowledge: Balancing theoretical knowledge with practical, hands-on experience is key. Students need to understand the theory behind automotive systems and how to apply this knowledge in real-world scenarios.
  • Updating Curriculum Regularly: Automotive technology evolves rapidly, so staying current with the latest advancements and incorporating them into your teaching is vital. This ensures that students are learning the most up-to-date practices.
  • Balancing Theory and Hands-On Training: A good balance between theoretical knowledge and practical skills are essential. While understanding the principles is important, ASE L1 Certification heavily relies on hands-on skills in diagnosing and repairing complex automotive systems.
  • Encouraging Critical Thinking: Encouraging students to think critically and solve problems is crucial. Real-world scenarios where they need to diagnose and repair complex issues are excellent for developing these skills.
  • Preparing for Exams: Preparing students for the ASE L1 exam requires a focused approach. This includes not just teaching the material but also familiarizing them with the exam format and question types.
  • Adapting to Different Learning Styles: Recognizing that students have different learning styles and adapting your teaching methods accordingly can be challenging but is essential for effective teaching.
  • Building Confidence and Professionalism: Apart from technical skills, instilling a sense of professionalism and confidence in your students is important. This helps them not just pass the exam but also succeed in their careers.
  • Continuous Learning and Professional Development: As a lecturer, continually learning and pursuing professional development opportunities is key to maintaining credibility and providing the best education possible.
  • Teaching Methodology: Employing a variety of teaching methods to cater to different learning styles is important. This might include lectures, hands-on workshops, demonstrations, and the use of multimedia resources.
  • Assessment and Feedback: Regular assessments to track student progress and understanding are important. Providing constructive feedback helps students identify areas where they need more focus.
  • Industry Connections: Facilitating connections with the automotive industry, such as guest lectures from experienced technicians or visits to automotive workshops, can provide valuable insights and real-world perspectives.
  • Ethics and Professionalism: Instilling a sense of ethics and professionalism is crucial, as these are important qualities in the automotive service industry.

Overall, teaching ASE L1 certification requires a blend of technical expertise, effective teaching strategies, and a commitment to helping students succeed in their automotive careers.

Our Career Employer team has thoroughly crafted this practice test tailored for the ASE L1 certification. With a wealth of knowledge gained from extensive experience and a deep understanding of ASE L1 exam preparation, our team has guided over a thousand auto technicians to triumph in the official ASE L1 certification exam.

Our team, consisting of seasoned mechanics, each boasting over a decade of specialized expertise, contributes invaluable insights to this undertaking. To accommodate diverse needs and learning styles, we provide multiple versions of the practice exam.

Understanding the certification in general

The ASE L1 Advanced Engine Performance Exam is a comprehensive test designed for experienced automotive technicians. It assesses skills and knowledge in advanced engine performance, including various aspects of engine diagnosis and repair. Here’s a detailed breakdown of the exam:

Exam Coverage and Preparation

  • Topics: The ASE L1 exam covers General Engine Diagnosis and Repair, Ignition System Diagnosis and Repair, Fuel System Diagnosis and Repair, Emissions Control Systems Diagnosis and Repair, Computerized Engine Controls Diagnosis and Repair, and Engine Performance Enhancement. The section on Computerized Engine Controls is particularly significant, making up a major portion of the exam​​.
  • Prerequisites: Before taking the ASE L1 exam, technicians need to pass the ASE A8 Engine Performance certification test​​.
  • Study and Practice: Preparing for the ASE L1 exam requires substantial study and practice. ASE provides study guides, practice tests, and training courses. Using ASE-approved materials that align with the exam’s content and format is recommended. Practicing with ASE L1 exam questions and joining study groups can be beneficial​​.
  • Content Areas: The exam includes sections like General Powertrain Diagnosis, Computerized Powertrain Controls Diagnosis (including OBD II), Ignition System Diagnosis, Fuel Systems and Air Induction Systems Diagnosis, Emission Control Systems Diagnosis, and I/M Failure Diagnosis​​​​.

Exam Details

  • Scoring: To pass and earn ASE L1 certification, candidates must achieve a score of at least 70%​​.
  • Cost: The cost of taking the ASE L1 exam typically ranges from $45 to USD 90, depending on the testing location​​.
  • Validity: ASE certifications, including the L1, are valid for five years. Recertification is required every five years​​.

Benefits of Certification

  • Career Advancement: Obtaining ASE L1 certification can lead to new employment opportunities, potentially higher wages, and increased job security. It’s especially valued in dealerships and independent repair shops specializing in advanced engine diagnostics and repair​​.
  • Professional Recognition: ASE L1 certification demonstrates expertise in advanced engine performance diagnosis and repair. This is advantageous for technicians running their own repair businesses as it helps attract customers and establish a positive reputation​​.

In summary, the ASE L1 Advanced Engine Performance Exam is challenging but offers significant benefits for automotive technicians specializing in advanced engine diagnostics and repair. Thorough preparation using ASE-approved materials and a structured study plan is key to success in this exam.

Effective Study Strategies / Methods

To effectively prepare for the ASE L1 exam, it’s essential to adopt a multifaceted approach that combines understanding the exam format, utilizing the right study materials, and leveraging practical experience. 

Here are some strategies and resources based on insights from various sources:

  • Understand the Exam Format: Familiarize yourself with the types of questions you will encounter. The ASE L1 exam includes different question formats such as Completion/Direct, True or False, and Except and Least Likely questions. Understanding how to approach these questions is crucial for success​​.
  • Use Practice Questions and Tests: Engaging with practice questions and tests helps build test-taking stamina and familiarizes you with the exam’s question formats. This approach also assists in identifying and focusing on your weak areas​​​​.
  • Select the Right Study Guides: Choose comprehensive and up-to-date study guides. Look for guides that include practice questions based on real-world scenarios, which can enhance your ability to apply what you’ve learned. Some guides also offer detailed explanations for each question, which can be extremely beneficial​​.
  • Practical Application and Shop Time: Utilize your practical experience in the shop to reinforce your theoretical knowledge. Discuss challenging concepts with colleagues, and apply your knowledge in real-life scenarios. This hands-on experience is invaluable and complements your theoretical study​​.
  • Theoretical vs. Practical Knowledge: Be aware that the ASE tests often focus on theoretical knowledge rather than practical application. This means that you should be prepared to answer questions based on textbook knowledge and not necessarily on shop practices​​.
  • Financial Considerations: Be mindful of the costs associated with preparing for the ASE L1 exam, which can include fees for the test, study materials, and practice tests. It may be beneficial to ask your employer for assistance with these costs, as many are willing to support their employees’ certification efforts​​.
  • Choose the Right Prep Material: There are several ASE L1 test prep books and practice test kits available. Look for ones that are tailored to your learning style and that cover the exam content thoroughly. Some recommended options include study guides by Motor Age and practice test kits by Dr. John Kershaw​​.
  • Registration and Exam Timing: Plan your study schedule around the ASE testing windows. These are typically spread across different seasons of the year, allowing you to choose a convenient time for your exam​​.

These resources should provide a comprehensive approach to studying for the ASE L1 exam, combining expert advice, community insights, and official guidelines.


Fee TypeAmount
Registration Fee$34 (with each order)
Test Fee (Standard)$53 each
Advanced Level Test Fee (L1, L2, L3, L4)$106 each
Recertification Test Fee (Advanced Level)$106 each
Maximum Recertification Cost (Single Order)$193
ASE Renewal App Subscription$48/year
Non-Certification Test Fee (e.g., BMW Assessment)$53 each

The cost of obtaining ASE (Automotive Service Excellence) L1 Board Certification involves several components, including exam registration fees, the cost of the exams themselves, potential recertification costs, and study materials. Here’s a comprehensive breakdown based on the latest information available:

Registration and Exam Fees:

  • There’s a standard registration fee for ASE certification tests, which is around $36 per person. This fee is applicable each time you register for an exam or a set of exams.
  • The cost for each certification test (excluding the L1, L2, and L3 tests) is approximately $39 per test.
  • Advanced Level Certification Tests, which include L1, L2, and L3, cost about $78 each.
  • Recertification tests have the same pricing as the initial certification tests, but there is a cap on the total amount you can be charged for recertification tests, which is around $117, regardless of the number of tests you take​​.

Special Advanced Tests:

  • Some specialized advanced tests have different fees. The Advanced Level Tests L1, L2, and L3, for example, cost $94 each​​.

Study Materials and Preparation:

  • To prepare for the ASE tests, you might want to invest in study guides and practice tests. The cost of these materials can vary, typically ranging from USD 26 to USD 30 depending on the certification test. For example, an A1 Engine Certification Study Guide Ebook and Practice Test could cost around USD 26, with the practice test priced at about USD 10.
  • Adding the cost of study guides and practice tests to the exam fees can result in a total estimated expenditure of around $296 for a combination of basic and advanced tests​​.


  • ASE Certification credentials are valid for five years. After this period, recertification tests are required to maintain your certification. These tests are typically half the length and number of questions compared to the initial tests, with a total capped cost for recertification at around $175​​.

Additional Considerations:

  • ASE tests consist of multiple-choice questions, with each exam containing between 40 and 75 scored questions, plus additional non-scored questions for research purposes. The questions are based on practical problems encountered in day-to-day work situations​​.
  • If you fail an ASE test, you will need to pay additional fees to retake the test, so it’s advisable to be well-prepared to avoid these extra costs​​.

It’s important to note that the costs can vary slightly based on the specific exams you are taking and the resources you choose for study and preparation. Additionally, these figures are based on the latest available information and are subject to change, so it’s advisable to check the most current details on the ASE website or with your chosen training provider.

Reliable Study Materials and Resources

Preparing for the ASE L1 certification exam requires access to high-quality study materials and resources. Here are some of the best online resources you can use:

  • ASE Website: The National Institute for Automotive Service Excellence (NIASE) offers free study guides for the L1 exam and other ASE certifications. These guides cover topics like general powertrain, computerized powertrain controls, ignition systems, fuel and air induction systems, emission control systems, and I/M test failures. You can download these guides in PDF format from the Test Prep & Training page on the ASE website. Additionally, the ASE website provides practice tests for a fee, which are useful for getting a feel of the actual exam format and question style​​.
  • Pocket Prep: Pocket Prep offers an ASE L1 Exam Prep course with 200 study questions, which have been written by industry professionals. This platform is highly rated by users for its effectiveness in preparing for the ASE L1 exam. The practice questions are based on the latest exam outlines and each question comes with detailed explanations​​.
  • Motor Age Training: They offer an ASE L1 Advanced Engine Performance study guide and practice test, which includes detailed illustrations and the most current L1 certification task list provided by ASE. The guide covers topics like general powertrain diagnosis, computerized powertrain controls diagnosis, and ignition system diagnosis. The back of the book contains an ASE practice test with questions written in the style of the ASE certification exam​​.
  • AVI OnDemand: AVI OnDemand offers an ASE L1 Test Prep Study Guide which is updated to cover the new composite type 4 vehicle, which makes up 50% of the entire test. This guide includes general powertrain diagnosis, computerized powertrain controls (including OBDII), ignition system diagnosis, fuel systems, air induction diagnosis, emission control diagnosis, and I/M failure diagnosis. Their instructors compile content along with test questions designed to prepare you for the L1 certification test​​.
  • ASE Study Guides – Automotive Service Excellence: These guides provide a detailed roadmap of the individual tests, including sample questions and suggestions for further preparation.
  • Test Series – Automotive Service Excellence – ASE: This resource offers detailed information about the Advanced Engine Performance Specialist Certification Test (L1), including a test reference document, sample questions, and training resources.
  • YouTube Video Series on ASE L1 Exam Preparation: A video series by David Rosckowff, a certified master technician, discussing his experience with the ASE L1 exam. He shares insights on what to study and follows up with advice after passing the exam. The series includes various helpful videos on topics like Exhaust Gas Analysis, Check Engine Light Codes, EVAP System, Air/Fuel Ratio, Ignition Timing, and Oxygen Sensor Testing.
  • Reddit Forum – Automotive Training: A thread on Reddit where individuals discuss strategies for passing the ASE test. The consensus is to study diligently, use up-to-date ASE study guides, and treat the preparation like a college exam.
  • ASE L1 Practice Test: A free sample practice test available at consists of 12 questions across 6 sections, written by Dr. John.
  • Salary Information: According to Pocket Prep, the average salary for an ASE Master Technician with an L1 certification is around $77,000 per year.
  • ASE Study Guides: ASE provides study guides for each test series, offering a detailed roadmap of the individual tests with sample questions and preparation suggestions. 
  • Composite Vehicle Reference: The ASE L1 and L1R tests require the use of the new Automobile – Advanced Engine Performance Specialist (L1) Composite Vehicle Type 4 (CV4). 
  • Quizzes and Test Reviews: Online quizzes, such as the one on ProProfs Quiz, can be useful for practice. Additionally, personal test reviews and advice are available on YouTube, like the video I Passed the ASE L1 Test!!! – Advice and Test Review.

These resources provide comprehensive materials, including practice tests, study guides, and exam preparation tips, to help you effectively prepare for the ASE L1 certification exam.

Tips for Exam Day

Here are a few tips that you might find helpful on exam day:

  • Rest and Preparation: Ensure you are well-rested before the exam day. Arrive early at the exam center to avoid any last-minute stress.
  • Answer Every Question: Even if you’re unsure of an answer, it’s better to make an educated guess than to leave it blank. Use the process of elimination to narrow down the choices​​.
  • Manage Your Time Effectively: Don’t spend too much time on any one question. If unsure, mark it for review and return to it later if time permits​​.
  • Trust Your First Instinct: Often, your first choice is the correct one. Be cautious about changing answers upon reviewing unless you’re sure about the correction​​.
  • Understanding Question Wording: Many users emphasized the importance of understanding how questions are worded in the ASE exams. Practice quizzes can help you get familiar with the “technician A says, technician B says” style and the “all of these statements are true, except” type of questions.
  • Study and Practice: Regular study and taking practice exams are crucial. Some users suggested using the practice tests available on the ASE website and watching explanatory videos on YouTube.
  • Focus and Preparation: Good sleep and a relaxed mind are essential. Reading the material in a quiet place and focusing on key areas like electrical questions (especially for the A6 exam) can be beneficial.
  • Process of Elimination: During the exam, start by eliminating the wrong answers. This approach can increase your chances of selecting the correct answer, especially when you’re unsure.
  • Experience and Study Materials: Some questions may seem geared towards experienced professionals. Using study guides like the Pearson test prep guide and the ASE study book can be helpful. Repeated reading and practice tests are recommended.
  • Attention to Detail: Pay close attention to the details in the questions. The ASE tests may try to confuse you with their wording, so understanding the exact requirement of the question is crucial.

Post-Exam: Next Steps

After passing the ASE L1 exam, it’s important to focus on strategies and resources that can help you further your knowledge and skills. 

Here are some post-exam strategies and resources you might find helpful:

  • Review and Reflect: Take some time to review the exam content, especially areas where you found challenges. Reflect on what you learned and how it applies to your practical work.
  • Continuous Learning: Stay updated with the latest in automotive technology. This can involve subscribing to industry publications, attending workshops, or engaging in online forums.
  • Network with Professionals: Join online forums or local groups of automotive professionals. This not only helps in staying informed about industry trends but also in solving day-to-day challenges you may face in your work.
  • Practical Application: Apply your learned knowledge in your everyday work. Hands-on experience is invaluable and helps reinforce theoretical knowledge.


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