180+ Free ASE A8 Practice Questions
Pass your ASE A8 Engine Performance Certification exam on the first try — instant access, no signup required.
Choose Your Practice Session
Select how many questions you want to practice
Questions by Category
Key Facts: ASE A8 Exam
50
Scored Questions
ASE A8 Exam
75 min
Time Limit
ASE
~70%
Passing Score
ASE
$47
Exam Fee
ASE (plus $34 registration)
5 years
Certification Valid
ASE
25%
Fuel/Air/Exhaust
Largest content areas
The ASE A8 Engine Performance exam has 50 scored questions plus 10 research questions, with a 75-minute time limit. The exam covers 5 content areas: General Engine Diagnosis (15%), Ignition System Diagnosis and Repair (20%), Fuel, Air Induction, and Exhaust Systems (25%), Emissions Control Systems (25%), and I/M Test Failures (15%). ASE certifications are valid for 5 years and are recognized throughout the automotive industry.
About the ASE A8 Exam
The ASE A8 Engine Performance certification tests knowledge of general engine diagnosis, ignition system diagnosis and repair, fuel, air induction, and exhaust systems diagnosis and repair, emissions control systems diagnosis and repair, and I/M test failures. This certification covers computerized engine controls, OBD-II diagnostics, sensors and actuators, fuel injection, ignition systems, and emissions testing.
Questions
50 scored questions
Time Limit
75 minutes
Passing Score
~70%
Exam Fee
$47 (exam) + $34 (registration) (National Institute for Automotive Service Excellence (ASE))
ASE A8 Exam Content Outline
General Engine Diagnosis
Engine noises, fluid analysis, electronic diagnosis, scan tool use, OBD-II diagnostics, engine mechanical tests, vacuum testing, compression testing, leakdown testing, cylinder balance tests
Ignition System Diagnosis and Repair
Primary and secondary ignition circuits, ignition coils, spark plugs, spark plug wires, distributor components, ignition timing, waste spark systems, coil-on-plug systems, ignition scope analysis
Fuel, Air Induction, and Exhaust Systems
Fuel pumps, fuel filters, fuel injectors, fuel pressure testing, fuel trim analysis, air intake systems, throttle bodies, mass airflow sensors, MAP sensors, superchargers, turbochargers, exhaust systems, catalytic converters
Emissions Control Systems
PCV systems, EGR systems, evaporative emission systems, catalytic converters, oxygen sensors, air injection systems, NOx reduction, fuel tank pressure sensors, purge valves, vent solenoids
I/M Test Failures
Emissions test failures, high HC failures, high CO failures, high NOx failures, OBD-II readiness monitors, drive cycle procedures, visual inspection failures, gas cap testing, catalyst failures
How to Pass the ASE A8 Exam
What You Need to Know
- Passing score: ~70%
- Exam length: 50 questions
- Time limit: 75 minutes
- Exam fee: $47 (exam) + $34 (registration)
Keys to Passing
- Complete 500+ practice questions
- Score 80%+ consistently before scheduling
- Focus on highest-weighted sections
- Use our AI tutor for tough concepts
ASE A8 Study Tips from Top Performers
Frequently Asked Questions
How hard is the ASE A8 Engine Performance exam?
The ASE A8 exam is considered moderately difficult with a 60-70% pass rate. It requires hands-on experience combined with theoretical knowledge of modern engine control systems. Most technicians with 2+ years of engine performance experience who study for 30-40 hours pass on their first attempt. The exam tests both OBD-II diagnostic skills and component knowledge.
How many questions are on the ASE A8 exam?
The ASE A8 exam has 50 scored multiple-choice questions plus 10 unscored research questions (60 total), with a 75-minute time limit. The research questions are used for future exam development and do not count toward your score. You need approximately 70% to pass.
What experience do I need to take the ASE A8 exam?
ASE recommends 2 years of on-the-job experience in engine performance diagnosis and repair before testing. However, you can take the exam without experience. If you pass without meeting experience requirements, you receive certification once you complete the experience. Formal training from an automotive program can substitute for part of the experience requirement.
How do I become an ASE Master Technician?
To become an ASE Master Automobile Technician, you must pass all eight A-series exams: A1 Engine Repair, A2 Automatic Transmission/Transaxle, A3 Manual Drive Train and Axles, A4 Suspension and Steering, A5 Brakes, A6 Electrical/Electronic Systems, A7 Heating and Air Conditioning, and A8 Engine Performance. Certifications are valid for 5 years.
How much does ASE certification cost?
The ASE A8 exam costs $47 per test. There is also a $34 registration fee per test window (you can take multiple tests in one window for a single registration fee). Recertification costs $41 per test. Many employers reimburse ASE certification costs as part of their technician development programs.