Michigan Mechanic Certification Requirements and Exemptions

To work as a paid mechanic in Michigan, you need a state-issued mechanic certificate in every repair category you perform, issued by the Secretary of State under the Motor Vehicle Service and Repair Act. Certification follows a pass-the-exam, submit-the-application, display-the-certificate sequence, and it applies to anyone doing major repairs for the public. A handful of narrow exemptions cover personal and family work, minor services, supervised trainees, and customer-initiated emergencies.¹

Who Has to Be Certified

The act splits repair work into two buckets, and the bucket decides whether certification is required. Major repairs include reconditioning, replacing, diagnosing, adjusting, or altering the operating condition of a vehicle or any component in a regulated category.² If you touch an engine, transmission, brakes, suspension, steering, electrical system, or heating and air conditioning system for pay, you need to be certified in that category.

Minor repairs are spelled out in the statute and don’t require certification. The list covers oil changes, coolant service, body work (other than unitized structural repair), and the replacement of parts like drive belts, batteries and battery cables, exhaust components, fuel filters, radiators and hoses, shock absorbers, light bulbs, wiper blades, and horns.³ Employees of gas stations and similar fuel-and-lubricant businesses can perform those tasks without any state credential.

At the shop level, every registered repair facility must employ at least one certified specialty or master mechanic in each major-repair category it offers to the public.⁴ Advertising brake service without a brake-certified mechanic on the payroll is a violation.

Specialty Mechanic and Master Mechanic

Michigan issues two tiers of credential. A Specialty Mechanic is certified in one or more individual repair categories. A Master Mechanic has passed every exam within an entire vehicle class.

For automobiles and light trucks, there are eight specialty categories:

Engine repair
Automatic transmission
Manual transmission, front and rear drive axles
Front end, suspension, and steering systems
Brakes and braking systems
Electrical systems
Heating and air conditioning
Engine tune-up and performance

For heavy-duty trucks, there are six: gasoline engine repair, diesel engine repair, drivetrain, brakes and braking systems, suspension and steering systems, and electrical systems.⁵ Passing all eight light-truck exams or all six heavy-duty exams earns the Master Mechanic designation in that class. A technician who only works on one system can hold just that single specialty.

How to Get Certified

Testing comes first. Exams are given electronically on touch-screen kiosks through the Secretary of State’s authorized testing partner, and each test costs $6.⁶ The content covers both the technical side of the category and Michigan law on repair practices and consumer rights.

Once you’ve passed the exams for the categories you want to work in, file the mechanic certification application. You’ll need your Social Security number, current contact information, and the repair categories matching your test results. The application goes to the Department of State’s Business Licensing and Enforcement Division in Lansing with a $25 fee, or you can file online for faster turnaround. The Department advises allowing 30 days for processing.²

Approval produces a physical certificate, which must be displayed at your primary place of employment. The state also maintains a public registry built from application data so consumers can verify a mechanic’s status before authorizing work. Falsifying the application exposes you to penalties under the act.

Which Certifications Expire

Most Michigan mechanic certifications never need to be renewed. Only three light-truck categories carry a five-year expiration: engine tune-up and performance, electrical systems, and brakes and braking systems. Every other category is good indefinitely once issued.²

To renew one of those three, you have three choices: pass the current version of the state exam, show a current and matching ASE (Automotive Service Excellence) certification, or complete a state-approved training program.² Letting one of these certifications lapse without meeting any of those options means losing authorization to perform that category of work; you may need a trainee permit while you get current.

Exemptions from Certification

Your Own Vehicle, or a Family Member’s

The act doesn’t apply to individuals repairing their own vehicles or those of family members.³ You can rebuild your own engine in your garage with no state involvement. The exemption ends the instant money changes hands with a non-family member.

Minor Repair Employees

Employees performing only tasks on the statutory minor-repair list don’t need a mechanic certificate. This is how gas stations, quick-lube shops, and similar businesses operate legally without a certified technician on every shift.³ The facility itself still has to comply with the act’s registration and consumer protection rules.

Mechanic Trainee Permit

Someone who hasn’t yet passed the certification exams can apply for a mechanic trainee permit. The permit allows the trainee to perform major repairs, but only under the direct supervision of a specialty or master mechanic throughout their employment. Trainee status lasts a maximum of two years, after which the person must either pass the exams or stop doing major repair work.⁷ The certified supervisor carries full responsibility for the quality and safety of work the trainee performs.

Customer-Initiated Emergency Waiver

If a customer urgently needs a repair at a shop with no mechanic certified in the relevant category, the customer can voluntarily sign a written waiver. The waiver is executed in duplicate, one copy to the customer, and it applies only when the customer initiates the request because of an emergency.⁴ The statute specifically prohibits shops from using waivers as a routine workaround to avoid hiring certified staff.

Extra Credential for A/C Work

Holding Michigan’s heating and air conditioning certification isn’t enough on its own. Under Section 609 of the federal Clean Air Act, anyone who services a motor vehicle air conditioning system for payment or barter must also hold an EPA-approved certification.⁸ The Section 609 credential requires an EPA-approved training program and a test on refrigerant servicing equipment, regulatory requirements, refrigerant recovery, and the environmental effects of improper handling. A/C technicians need both the state and federal credentials.

Penalties for Working Without Certification

Knowingly violating the act is a misdemeanor. A first conviction carries up to 90 days in jail, a fine of up to $1,000, or both. Later convictions go up to one year in jail and fines up to $5,000.³

Civil exposure runs alongside the criminal side. A facility that violates the act is liable to anyone harmed, and the customer can recover actual damages plus reasonable attorney fees and costs. If the violation was willful and flagrant, damages double on top of fees and costs.³ One unhappy customer can cost a shop more than it saved by skipping certification.

A Note on Shop Registration

Mechanic certification covers the individual. Running the shop is a separate obligation: before a facility can perform any motor vehicle repairs for pay, it must register with the Michigan Department of State, and operating without a registration number is a misdemeanor.⁹ If you’re opening a shop rather than being hired at one, you need both your personal certifications and a facility registration.

1
Michigan Legislature. Michigan Compiled Laws 257.1301 – Short Title
2
State of Michigan. Mechanics
3
Michigan Legislature. Michigan Compiled Laws – Act 300 of 1974
4
Michigan Legislature. Michigan Compiled Laws 257.1305 – Mechanic Certification Requirements
5
Michigan Secretary of State. Mechanic Testing Categories Overview
6
Michigan Department of State. Mechanic Testing
7
Michigan Legislature. Michigan Compiled Laws 257.1313 – Mechanic Trainee Permit
8
U.S. Environmental Protection Agency. Section 609 Technician Training and Certification Programs
9
Michigan Department of State. Repair Facility Original Application