ASE Advanced Engine Performance Specialist (L1) Test Information - Vehicle Type 4

Sep 29, 2026

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Official ASE Advanced Engine Performance Specialist (L1) Test guide for Composite Vehicle Type 4. Provides a structured preparation overview including test information, test specifications by content area and question distribution, and a detailed task list outlining the technical knowledge and skills required. Includes a glossary of specialized terms and sample questions in multiple-choice formats, plus test prep and training resources. Covers requirements for certification and recertification, including testing duration and scored versus unscored questions.

LanguageEnglish

CategoryExam

FormatPDF

Pages15

Reading Time38 min

AccessFree to download

Introduction

Test Specifications

Task List

Glossary of Terms

Sample Questions

Test Prep & Training

The Official ASE Study Guide Use with Composite TEST INFORMATION FOR THE Vehicle Type 4 ADVANCED ENGINE PERFORMANCE SPECIALIST (L1) TEST ● OVERVIEW ● TEST SPECIFICATIONS ● TASK LIST ● GLOSSARY OF TERMS ● SAMPLE QUESTIONS ● INDUSTRY TRAINING ASE Advanced Engine Performance Specialist (L1) Test Contents Introduction .................................................................. 3 Test Specification ........................................................... 4 Task List ......................................................................... 5 Glossary of Terms .......................................................... 8 Sample Questions ........................................................ 11 Test Prep & Training .................................................... 14 COPYRIGHT © 2026 by National Institute for AUTOMOTIVE SERVICE EXCELLENCE All rights reserved © ASE 2026 ASE Advanced Engine Performance Specialist Test Information-Page 2 Contents Questions Introduction IMPORTANT! This guide must be used in conjunction with the L1 Composite Vehicle Type 4 Reference document (download [at](at www.ase.com/ase-study-guides)[ ](at www.ase.com/ase-study-guides)[www.ase.com/ase-study-guides](at www.ase.com/ase-study-guides)) . The document describes a generic vehicle powertrain control system. It will be available as a pop-up reference during the test but familiarizing yourself with the contents beforehand is a key to success. A significant number of the test questions will require you to use this reference. Use this Official ASE Study Guide to prepare for the ASE Advanced Engine Performance Specialist (L1) Test. This document contains general information, the Test Specification, the Task List, sample questions, a glossary of specialized terms, and test preparation resources for this ASE test. The Test Specification in this study guide is determined by working professionals and technical experts and lists the main content covered by the test and the number of test questions devoted to each topic. The Task List for this test is developed by working professionals and technical experts, and it spells out the technical knowledge and skills required for success on this test. The Task List provides a valuable checklist of what you should know. Every question on the test represents one or more of these tasks, although some tasks may not appear on the version of the test that you see. To improve chances of success, use the Task List to identify weak areas and to select learning resources. The sample questions show the several types of multiple-choice question formats used on an actual ASE test. Some questions have special instructions; those same instructions will appear with similar questions on the ASE tests. If you are a native Spanish speaker, be aware that all ASE tests have apop-up English-to-Spanish glossary. ASE certification requires successful completion of the test and documentation of relevant work experience (3 years for this test) . Appropriate vocational training may count toward part of the work experience [requirement. Visit](requirement. Visit workexp.ase.com/FormInstr.aspx for more)[ ](requirement. Visit workexp.ase.com/FormInstr.aspx for more)[workexp.ase.com/FormInstr.aspx](requirement. Visit workexp.ase.com/FormInstr.aspx for more)[ for more](requirement. Visit workexp.ase.com/FormInstr.aspx for more) details. To register for the L1 Test, you must have previously passed the Automobile Engine Performance (A8) Test. For more information about ASE tests in general and the ASE Certification process, download [ASE Certification: Need to Know](ASE Certification: Need to Know at www.ase.com/ase-study-guides)[ at](ASE Certification: Need to Know at www.ase.com/ase-study-guides)[ ](ASE Certification: Need to Know at www.ase.com/ase-study-guides)[www.ase.com/ase-study-guides](ASE Certification: Need to Know at www.ase.com/ase-study-guides). How Long are

FAQs

What reference document is required for this guide?

The guide must be used with the L1 Composite Vehicle Type 4 Reference document. The reference provides a generic vehicle powertrain control system and will be available as a pop-up during the test, but reviewing it beforehand is important.

How is the L1 test structured in terms of questions and timing?

The L1 Advanced Engine Performance Specialist test has 60 total questions with 50 scored, with a testing time of 2.5 hours (150 minutes).

What topics are covered in the L1 test and how many questions focus on each?

The test specification covers 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, with question counts and percentages assigned to each content area.

Sep 29, 2026

Upload by Mabel