Michigan is one of a small number of states where repairing vehicles for money without certification isn’t just discouraged — it’s against the law. If you’re turning wrenches for pay anywhere in this state, the Secretary of State expects you to hold certification in the categories you work in.
That catches a lot of people by surprise, especially techs moving here from states with no such requirement. Here’s what’s actually required, what it costs, and why it’s worth more than just staying legal.
Why certification matters beyond the law
The legal requirement is the floor, not the reason. Three things make certification worth chasing:
- It proves skill without a résumé. Anyone can say they’re good at diagnostics. A certification in Electrical Systems is checkable, and it travels with you between shops.
- It gates pay. Most shops, ours included, tie pay increases to demonstrated capability. Certifications are the cleanest way to demonstrate it.
- It decides what work you get. The tech who is certified across more categories gets handed the more interesting — and usually better-paying — jobs.
Who has to be certified
Michigan requires certification if you repair motor vehicles for compensation. The state defines that broadly: reconditioning, replacement, diagnosis, adjustment, or alteration of a vehicle’s operating condition. It covers bench repairs at registered facilities and structural damage estimation too.
In plain terms: if you get paid to make a car work better, you need to be certified in the area you’re working in.
The Michigan certification categories
Certification is granted by category, not as a single blanket license. You test into the areas you actually work in.
Automobile and light truck — eight categories
- Engine Tune-up/Performance
- Electrical Systems
- Brakes and Braking Systems
- Steering and Suspension
- Heating and Air Conditioning
- Fuel System
- Transmission
- General Mechanical Repair
Other classifications
- Heavy-duty truck repair — six separate categories
- Motorcycle repair — a single classification
- Collision repair — Unitized Body Structural Repair, and Collision Related Mechanical Repair
What it costs
Cheaper than most people assume. Michigan charges a $25 application fee and $18 per test. Certifying in three categories runs well under $100 — less than a decent torque wrench.
How long it lasts
Most Michigan certificates are valid for five years. Three automobile categories specifically require recertification on that five-year cycle: Engine Tune-up/Performance, Electrical Systems, and Brakes and Braking Systems — the areas where the technology moves fastest.
Renew before your expiration date. Late renewal costs an additional 50%, which is an avoidable and annoying way to lose money.
How ASE fits with Michigan certification
This is the part techs most often get wrong. ASE and Michigan certification are not the same thing, but they connect.
Michigan lets you transfer ASE categories to your state mechanic certification in lieu of sitting the state exam. You still have to obtain the state certification — ASE doesn’t replace it — but it can save you the testing.
ASE’s own fee structure: a $34 registration fee per order, $62 per standard test, and $124 per advanced test (the L1–L4 series). There’s a $186 cap on tests within a single order. ASE credentials also run five years, or you can maintain A-series certifications through the ASE Renewal App at $52 a year.
Where to start if you have none
Don’t try to certify in everything at once. Start with what you already do every day, because you’ll pass without much study:
- Brakes and Braking Systems — highest-volume work in most shops, easiest first win.
- Steering and Suspension — pairs naturally with brake work.
- Electrical Systems — harder, but it’s the one that separates pay grades.
- Engine Tune-up/Performance — take it once you’re comfortable with diagnostics.
Three categories is enough to be genuinely useful to a shop. Eight makes you the person they build the schedule around.
What we do about it
We hire technicians at every skill level, including people with no certifications yet, and we support techs working toward more of them. If you’re certified in two categories and want to be certified in six, that’s a conversation we want to have.
Fees and requirements above reflect Michigan Secretary of State and ASE published rates as of 2026. Always confirm current fees before registering.