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Michigan auto repair shop insurance turns on one question most owners have never been asked: when a customer's car is damaged in your care, does your policy pay because you were at fault, or does it pay regardless? Those are two different versions of the same coverage, they sit one checkbox apart, and the difference is whether your customer goes through their own insurance and their own deductible or never finds out there was a problem. If you run an established independent repair or collision shop in Michigan, here is what your program actually says.
The short version: A general liability policy excludes customers' vehicles three separate ways. Garagekeepers is the coverage that responds, and it comes in three flavors — legal liability, excess, and direct primary. Michigan requires your facility to be registered with the Secretary of State and your mechanics to be individually certified, but it does not require a surety bond, whatever the bond-selling websites tell you.
Your general liability policy excludes every car in the building
This is not a gray area. Under the standard commercial general liability form, a customer's vehicle sitting in your bay is knocked out three times over:
- Exclusion j.(4) bars property damage to personal property in the care, custody or control of the insured.
- Exclusion j.(3) bars property loaned to you.
- Exclusion j.(6) bars that particular part of any property that must be restored, repaired or replaced because your work was incorrectly performed on it.
On top of that, exclusion g removes bodily injury and property damage arising out of the ownership, maintenance, use or entrustment to others of any auto owned or operated by or rented or loaned to an insured. A test drive is auto use. A CGL will not respond to it.
There is no version of a general liability policy that quietly picks any of this up. What responds is garagekeepers coverage for damage to customers' vehicles, and a business auto policy for the liability side — the auto use the CGL strips out. Worth knowing: ISO's old Garage Coverage Form is no longer available to an independent shop. The Auto Dealers Coverage Form replaced it and is written for dealers. A non-dealer repair or collision shop is normally a business auto policy plus garagekeepers plus a general liability policy, even where a carrier still markets the package under the "garage" name.
Garagekeepers: three versions, very different outcomes
The standard garagekeepers endorsement offers three bases, selected by checkbox on the form. Which box is checked on your policy is worth knowing before you need it.
| Basis | What it actually does |
|---|---|
| Legal liability (the default) | Pays only for loss you are legally liable for. Hail flattens a customer's car in your lot and you did nothing wrong? Pays nothing. |
| Direct excess | Pays without regard to fault, but only in excess of the customer's own collectible insurance. Your customer still files on their own policy and, on most forms, still absorbs their deductible — confirm on your own endorsement. |
| Direct primary | Pays without regard to fault, from the first dollar, and does not push the customer onto their own policy. |
If no direct coverage option is indicated on the endorsement or in the declarations, you have legal liability — the narrowest of the three, and the one most shops assume they do not have. The customer-experience argument for direct primary is real: on legal liability or excess, a customer whose car is damaged in your care goes through their own insurer and their own deductible, and hears about it. On direct primary, you handle it. It costs more. For a shop whose business runs on repeat customers and referrals, it usually earns the difference back.
Two other things to check on the garagekeepers limit: whether it is enough to cover the most cars you will ever have on the lot at once, not the average, and whether the covered locations include any overflow lot or storage yard you use.
Michigan requires registration and certification, not a bond
Michigan regulates repair facilities under the Motor Vehicle Service and Repair Act (1974 PA 300), administered by the Michigan Department of State — the Secretary of State, not LARA. Two obligations matter.
Facility registration
A person may not engage in the business of a motor vehicle repair facility without registering the facility. It is registration, not licensure. Fees run on a sliding scale by expected gross annual revenue from repair work and the parts sold with it, from $100 for a facility under $50,000 in revenue up to $500 for one over $300,000. Repairs may not begin until you receive official notice the registration has issued.
Mechanic certification — the part with real teeth
Michigan is one of the few states that certifies individual mechanics. Certification is required to diagnose or repair vehicle operating conditions, and for bench repairs on component parts at a registered facility. Facilities must employ people properly certified for the types of repairs the facility performs. Service writers who only greet customers and write orders, without diagnosing or repairing, do not need certification.
Categories for autos and light trucks include engine repair, engine tune-up and performance, front end, suspension and steering, brakes, automatic and manual transmission and drive axles, electrical systems, heating and air conditioning, collision-related mechanical repair, unitized body structural repair, pre-1973 vehicles and BAIID, with a separate heavy-duty set for vehicles over 14,000 pounds GVWR. Note what is not a category: ordinary body and paint work. A technician replacing panels and refinishing does not need certification. Structural repair to a unitized body and collision-related mechanical work do. A mechanic certified in all the core auto categories is a Master; certification in some but not all is a Specialty. Uncertified individuals can work under a trainee permit for up to two years, supervised by a certified mechanic in the same category.
The bond myth. Search "Michigan auto repair bond" and you will find companies selling you one. Neither the statute nor the Secretary of State's repair facility manual requires a surety bond or a certificate of insurance to register a repair facility. Do not buy a bond because a website told you Michigan requires it. Confirm current requirements with the Department of State directly.
The insurance connection here is direct, and it is the reason certification belongs in an insurance article: an uncertified person diagnosing brakes is simultaneously a Secretary of State violation and the exact fact a plaintiff's attorney builds a negligence case around. Compliance and liability are the same file.
Michigan's own workers' comp codes for shops
Michigan classifies workers' compensation under its own manual through the Compensation Advisory Organization of Michigan, and its treatment of repair shops is genuinely different from the national system — it keys off Michigan's own repair-facility law.
- 8395, Automobile Repair Facility. Michigan's manual describes this as including auto sales and service agencies and all establishments providing repair services for which employees must hold state certification as repair facility mechanics. Porters who move vehicles on the premises are included.
- 8393, Auto Body Repair. Applies to repair of auto, bus, truck or trailer bodies, including the painting and interior upholstery work necessary for the repair, plus frame realignment, welding, glass, sanding and paintless dent repair. Michigan's manual routes mechanical repair operations back to 8395, and keeps cashiers inside 8393 rather than moving them to a clerical code.
- 8401 for write-up personnel located outside the shop area with no duties beyond writing service orders, 8010 for parts department employees, 7380 for drivers and tow truck operators, and 8748 for salespeople.
- 8387 covers automotive service work where the insured is not required to be a registered repair facility — car washes, quick oil changes, glass. (CAOM's manual says "licensed repair facility"; Michigan's statute calls it registration. Same thing.) Michigan's manual adds a sharp rule: if the insured is a registered facility, all of its service operations go to 8395, except that retail gasoline sales always go to 8387.
National sites commonly give auto repair the NCCI code 8380. Michigan's manual uses 8395 and 8393. If your policy shows an unfamiliar code, or all your payroll sitting in one bucket when your shop does both mechanical and collision work, that is worth checking. See our guide to Michigan workers' comp class codes.
Your tech in a customer's car
When an employee is behind the wheel of a customer's vehicle and there is a crash, four policies can be in play: yours, the customer's, the employee's own, and the other driver's. Michigan's no-fault priority rules decide which pays what, and the 2019 reform rewrote much of that scheme.
We are not going to tell you the answer in a blog post, because the honest answer is that it depends on the facts and it is genuinely contested territory. Two things are worth knowing. Michigan's rule that an employee injured in an employer-owned or registered vehicle looks to the insurer of that vehicle does not apply to a customer's car, which is neither. And Michigan's mini-tort allows recovery of up to $3,000 of vehicle damage not covered by insurance for accidents after July 1, 2020, subject to comparative fault, with no recovery for a party more than 50 percent at fault — the figure many Michigan pages still print as $1,000. Our post on Michigan's mini-tort covers that in detail.
The useful takeaway is that this is exactly the conversation to have with your agent before it happens, not after. If your shop routinely road-tests or delivers vehicles, say so at the application stage.
Frequently Asked Questions
Does general liability cover a customer's car damaged in my shop?
No. A customer's vehicle is personal property in your care, custody and control, which the general liability form excludes, and the form separately excludes liability arising out of the use of an auto, which is what a test drive is. Garagekeepers coverage is what responds to damage to customers' vehicles.
What is the difference between garagekeepers legal liability and direct primary?
Legal liability pays only when you are legally liable for the damage, so a hailstorm or a fire you did not cause pays nothing. Direct primary pays without regard to fault, from the first dollar, and keeps your customer off their own policy and deductible. Direct excess sits between the two: no fault required, but the customer's own insurance pays first. If no direct coverage option is indicated on the endorsement or in the declarations, legal liability is what applies.
Does Michigan require an auto repair shop to have a surety bond?
No. Michigan requires repair facilities to register with the Department of State under the Motor Vehicle Service and Repair Act, with a fee scaled to revenue, and requires individual mechanics to be certified for the categories of work they perform. Neither the statute nor the Department's repair facility manual requires a surety bond or a certificate of insurance to register. Bond-selling websites that say otherwise are marketing, not law. Confirm current requirements with the Department of State.
Do my service writers need to be certified mechanics in Michigan?
Not if their duties are limited to greeting customers and writing service orders. Certification is required for diagnosing or repairing vehicle operating conditions and for bench repairs on component parts. A service writer who starts diagnosing has crossed the line. Michigan's workers' compensation manual reflects this too, with a separate code for write-up personnel located outside the shop area.
How much garagekeepers coverage should a shop carry?
Enough to cover the most vehicles that will ever be on your premises at one time, including the overflow lot, not the average day. Shops that grew, added storage, or started keeping collision jobs longer waiting on parts are the ones most likely to have outgrown a limit set years ago.
The bottom line
Three things decide whether a shop's program works: which garagekeepers basis is checked, whether the limit covers a full lot rather than a typical day, and whether the payroll is sitting in Michigan's actual class codes. None of those show up on a premium comparison, and all three are on paperwork in your office right now.
We work best with established Michigan shops — certified techs on payroll, a registered facility, a building you own or lease long-term, and a few years of loss runs. If that is you, send us your current declarations pages, your garagekeepers endorsement, and your last two loss runs, and we will tell you what the checkbox says before we talk about price. As an independent agency representing more than twenty commercial carriers, we can place a garage risk with a market built for it. Call (248) 693-6455 or request a garage review.