What Michigan Requires to Become a Certified Mechanic

Michigan does not issue a single "mechanic certification" that covers all repair work. Instead, the state recognizes certifications through the National Institute for Automotive Service Excellence (ASE), which is a private nonprofit organization. ASE tests and certifies mechanics in specific areas — engine repair, transmission, brakes, electrical systems, and others — but passing an ASE test is voluntary, not legally required to work as a mechanic in Michigan.

What Michigan does require depends on what you repair. If you work on emissions systems, you need an Emissions Repair License from the Michigan Department of Environment, Great Lakes, and Energy (EGLE). If you own a repair shop, you need a Motor Vehicle Repair Facility License from the Michigan Department of Attorney General. If you work on heavy trucks, you may need additional credentials depending on the vehicle class and what systems you touch.

Most mechanics pursue ASE certification because shops prefer it, customers trust it, and it often leads to higher pay. But the path differs depending on whether you want ASE credentials, an emissions license, a shop license, or some combination of the three.

Key Takeaways

  • Michigan does not require a mechanic license to work on cars, but the state does require an Emissions Repair License if you service emissions systems and a Motor Vehicle Repair Facility License if you own a shop.
  • ASE certification is voluntary but widely expected by employers; you need four years of hands-on repair experience or two years of experience plus an automotive program diploma to sit for an ASE test.
  • The Emissions Repair License requires passing the Michigan Emissions Repair Technician exam and paying a fee; you renew it every two years.
  • A Motor Vehicle Repair Facility License requires proof of bonding, a shop address, and compliance with Michigan's repair disclosure and warranty rules.
  • You can work toward these credentials at the same time; many mechanics get ASE certified while employed at a shop that holds the facility license.

ASE Certification: The Industry Standard

ASE certification is the most common credential a mechanic pursues in Michigan. It does not come from the state — it comes from ASE, a nonprofit that tests mechanics nationwide. ASE offers tests in nine different specialties: engine repair, automatic transmission, manual drivetrain, suspension and steering, brakes, electrical systems, heating and air conditioning, engine performance, and light vehicle diesel engines. You do not have to pass all nine; most mechanics start with one or two.

To sit for an ASE test, you need either four years of hands-on work experience in that specialty, or two years of experience plus a diploma or certificate from an accredited automotive program. The experience must be documented — you will need to list employers and dates on your ASE process. ASE verifies this with your former employers, so be accurate.

The test itself costs between $100 and $150 per specialty, depending on the test. You take it at a testing center; ASE publishes a list of authorized centers in Michigan. The test is multiple choice, usually 40 to 80 questions, and you have 45 to 60 minutes. You pass if you score 70 percent or higher. Results come back within two weeks. Once you pass, your certification is valid for five years, then you must retake the test or complete continuing education to renew.

Michigan's Emissions Repair License

If you work on any part of a vehicle's emissions system — catalytic converters, oxygen sensors, fuel injection systems, or diagnostic equipment — Michigan requires you to hold an Emissions Repair License. This is a state requirement, not optional. The license is issued by EGLE, the state environmental agency.

To get the license, you must pass the Michigan Emissions Repair Technician exam. The exam covers federal and state emissions regulations, diagnostic procedures, and repair techniques. You can study using EGLE's study guide, which is free and available on the EGLE website. The exam costs $50 and is administered at testing centers throughout Michigan. You have two hours to complete it. A passing score is 70 percent.

Once you pass, you pay a $100 license fee and receive your Emissions Repair License. The license is valid for two years. To renew, you pay the $100 fee again; you do not have to retake the exam unless your license has been expired for more than two years. If you let it lapse beyond that, you must test again.

Motor Vehicle Repair Facility License: If You Own a Shop

If you own or operate a motor vehicle repair shop in Michigan, you must hold a Motor Vehicle Repair Facility License from the Michigan Department of Attorney General. This applies even if you are a sole proprietor working alone. The license covers your shop location and the work performed there.

To get a facility license, you must submit an process to the Attorney General's office that includes your shop address, proof of bonding (usually a $10,000 surety bond), and proof that you comply with Michigan's repair disclosure rules. Michigan requires shops to provide customers with a written estimate before starting work, to disclose any parts that are used or refurbished, and to offer a warranty on parts and labor. You must also keep records of all repairs for at least one year.

The process fee is $150, and the license is valid for two years. You renew by paying the renewal fee and confirming that your bonding is still in place. If you move your shop location, you must explore for a new license for the new address.

Getting Work Experience While You Study

Most mechanics in Michigan start as technicians or apprentices at a repair shop while they work toward certification. This gives you the hands-on hours you need for ASE, lets you learn on the job, and often means your employer will pay for your tests or study materials.

When you are hired, ask your employer whether they will count your hours toward ASE experience. Some shops keep formal records; others do not. If your shop does not, keep your own log of the work you do, the dates, and the systems you worked on. When you explore for ASE, you will list your employer as a reference, and ASE will contact them to verify your experience. Having your own records helps if there is any gap or dispute.

Many community colleges in Michigan offer automotive programs that include classroom instruction and lab work. If you complete one of these programs, you can reduce your required work experience from four years to two years for ASE. The programs typically take one to two years and cost between $5,000 and $15,000, depending on the school. Some employers offer tuition reimbursement if you complete a program while working for them.

Timeline and Costs

The time it takes to become certified depends on which credentials you pursue and whether you already have work experience. If you are starting from scratch, expect two to four years before you hold multiple certifications.

Here is a realistic path: You are hired at a repair shop as a technician. You work for two years while attending a community college automotive program at night or on weekends. You graduate with a diploma. You now have two years of experience plus a diploma, so you can sit for ASE tests. You pass your first ASE test in your third year. You also take and pass the Michigan Emissions Repair License exam. By year three or four, you hold ASE certification in one or more specialties and an Emissions Repair License. If you later open your own shop, you explore for the Motor Vehicle Repair Facility License.

Costs break down roughly as follows: ASE test fees are $100 to $150 per specialty. The Emissions Repair License exam is $50, and the license fee is $100 every two years. A community college program is $5,000 to $15,000. A Motor Vehicle Repair Facility License process is $150, and you must maintain a $10,000 surety bond, which costs $200 to $500 per year depending on the bonding company. None of these are large expenses individually, but they add up if you pursue multiple credentials.

Reciprocity and Out-of-State Credentials

If you hold ASE certification from another state, it is valid in Michigan — ASE credentials are national and do not expire when you move. You do not need to retest or re-register with Michigan.

If you hold an Emissions Repair License from another state, Michigan does not automatically recognize it. You must pass the Michigan Emissions Repair Technician exam. However, some states have reciprocal agreements with Michigan; check with EGLE to see whether your state is one of them.

If you own a repair shop in another state and move to Michigan, your out-of-state facility license does not transfer. You must explore for a new Motor Vehicle Repair Facility License in Michigan and meet Michigan's bonding and disclosure requirements.

Frequently Asked Questions

Do I need a high school diploma to become a mechanic in Michigan?

Michigan does not require a high school diploma to work as a mechanic or to sit for ASE tests. However, most employers prefer it, and some community college programs require it for admission. If you do not have a diploma, you can still work as a technician and gain experience, then test for ASE once you meet the experience requirement.

Can I work on cars while I am studying for my certifications?

Yes. You can work as a technician or apprentice at a repair shop while you study for ASE, take the Emissions Repair License exam, or attend a community college program. Your work hours count toward your ASE experience requirement as long as your employer confirms them.

What happens if I fail an ASE test?

You can retake it. There is no limit on how many times you can test. You pay the test fee each time. Many people take a test, fail, study the areas they missed, and retake it within a few weeks. ASE publishes a breakdown of your score by topic, so you know what to focus on.

Do I need both ASE certification and an Emissions Repair License?

Not necessarily. ASE is voluntary; the Emissions Repair License is required only if you work on emissions systems. Many mechanics hold both because employers expect ASE and because emissions work is common. But you can hold one without the other depending on what kind of work you do.

How much do mechanics make in Michigan?

Wages vary by shop, experience, and specialty. Entry-level technicians typically earn $25,000 to $35,000 per year. Experienced ASE-certified mechanics earn $40,000 to $60,000 or more, depending on the shop and whether they work on high-end vehicles or fleet maintenance. Shop owners can earn significantly more, but they also carry the cost of the facility license and bonding.