2023 Edition

ASE Practice Tests - 13 ASE Practice Exams

Take one of our 13 free 2023 ASE Practice Tests below to see what type of questions appear on an ASE auto mechanic certification exam.  The 13 free tests are specific to an ASE series.  The free test below is general to all areas.  An auto mechanic can get certified by taking the Automotive Service Excellence (ASE) exams, covering different subject areas, such as diesel and gas engines, trucks, buses, damage repair, auto components and much more.

These practice exams were written by Dr. John Kershaw, ASE Test Prep Expert, ASE Test Question Developer, ASE Certified Master Technician, ASE Master Truck Technician and Auto Industry Technical Instructor. 

For complete A Series practice, go to the A1 - A8 Practice Test Set with 800 Questions.

For more free practice questions, see the following tests geared toward specific ASE subject areas:

ASE A1 - Engine Repair Practice Test

ASE A2 - Automatic Transmission Practice Test

ASE A3 - Manual Drive Train and Final Drive Practice Test

ASE A4 - Suspension and Steering Practice Test

ASE A5 - Brakes Practice Test

ASE A6 - Electrical / Electronics Practice Test

ASE A7 - Heating and Air Conditioning Practice Test

ASE A8 - Engine Performance

ASE A9 - Light Vehicle Diesel Engines

ASE G1 - Auto Maintenance and Light Repair

ASE L1 - Advanced Engine Performance Specialist

ASE L2 - Electronic Diesel Engine Diagnosis Specialist

ASE L3 - Light Duty Hybrid / Electric Vehicle Specialist

Our ASE practice test materials were written by Dr. John Kershaw, an ASE test prep expert.  Dr. Kershaw has been an ASE test question developer, ASE Certified Master Technician, ASE Master Truck Technician, auto industry technical instructor and was among the first candidates certified by the ASE in 1972.  

Free ASE Practice Test


1. You are replacing brake pads. You've already removed the wheels. What is the appropriate next step for most vehicles?
2. A low-mileage vehicle is running hot. Assuming the radiator has enough coolant, what is the most likely problem?
3. A car is pulling to one side as it drives. The most common causes of this problem are listed below. Which one should you check first?
4. When you replace an oil drain plug, you should retighten it according to the old maxim "snug, but not too hard."
5. In what order should you replace spark plugs?
6. You are replacing a fuel tank. You've drained and stored all the gas in the vehicle. What is the next step?
7. A vehicle comes into your shop with a transmission problem. What is the FIRST thing you should do?
8. Problems with spark plug wires are almost always caused by cracks in the insulation.
9. You are completing a radiator flush. You have drained the old coolant and added the flush solution. What is the next step?
10. An engine is misfiring. Which of the following is NOT a likely cause?
11. What is the last step in a brake job?
12. An air filter should not be replaced until it shows visible signs of accumulated particles.
13. Black smoke is mixed into the exhaust of a vehicle you have been tasked to repair. Which of the following is a likely cause?
14. Which of the following is NOT a possible cause of an engine hesitating?
15. A vehicle is knocking when it goes over bumps or cracks in the road. Which of the following is a likely cause of the problem?
16. It is recommended that a timing belt be replaced at the manufacturer's suggested interval if a visual inspection reveals only minor fraying.
17. A brake pedal has to go down too far to stop. Which of the following is not likely to be a cause of this problem?
18. What type of fuse is a car made before 1980 likely to have?
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19. What is the most common reason a car will not start?
20. The water pump is the most important part of any vehicle's cooling system.
21. An engine has recently begun using a lot of oil and the coolant is foamy and brown. Which of the following is likely to have caused this problem?
22. Transmissions have a tendency to start leaking over time. Which of the following is NOT a common spot for a leak to occur?
23. When a car battery develops problems, it is most often because of dirty posts.
24. A vehicle is having difficulty with steering. Which of the following is the most likely cause?
25. Which of the following is NOT a common reason the CHECK ENGINE light comes on in most vehicles?
26. Which of the following is a common cause of an engine consuming too much oil? Assume there is no oil in the exhaust.
27. The most efficient bank angle for a six cylinder engine is 60 degrees.
28. A brake pedal has no or little air pressure. Which of the following is not likely to be the cause?
29. A vehicle comes into the shop with gray or blue smoke in the exhaust. Which of the following is likely to be the cause?

ASE Practice Test

ASE-G1 Auto Maintenance Light Repair Practice Test Kit

ASE A1 Practice Test - Engine Repair

ASE A5 Practice Test - Brake Systems

Quality starts with who wrote the material.
Our practice exam writer
Written by:
Dr. John Kershaw
ASE Test Prep Expert

ASE Test Question Developer

ASE Certified Master Technician

ASE Master Truck Technician

Auto Industry Technical Instructor

Among first ASE Certified in 1972
Actual ASE A6 Topics

• General Electric/Electronic 
• Battery and Starting Systems
• Charging Systems
• Lighting Systems
• Instrument Cluster/ Driver Info.
• Body Electrical Systems 


Number of Questions on the Actual ASE A Series Tests

A1 – Engine Repair (60)
A2 – Automatic Transmission/Transaxle (60)
A3 – Manual Drive Train & Axles (50)
A4 – Suspension & Steering (50)
A5 – Brakes (55)
A6 – Electrical/Electronic Systems (60)
A7 – Heating & Air Conditioning (60)
A8 – Engine Performance (60)
A9 – Light Vehicle Diesel Engines (60)