Michigan Car Accident Laws

Michigan's system has more moving parts than most states because two claims genuinely run in parallel: a no-fault claim against your own insurer, and (only in some cases) a lawsuit against the driver who caused the crash.

Filing your PIP claim and filing a lawsuit are two different things in Michigan, with two different deadlines. Missing the shorter one can cost you money even if your bigger case is still on track.

The no-fault (PIP) side: 1-year deadline

Under Michigan's No-Fault Act, your own insurer pays Personal Injury Protection (PIP) benefits regardless of who caused the crash — covering medical costs, lost wages, and replacement services. Since 2019 reforms, drivers choose from several PIP coverage tiers, including unlimited, $500,000, $250,000, or (for Medicaid recipients) $50,000, or a full opt-out if they have qualifying health coverage.

The lawsuit side: 3-year deadline, "serious impairment" required

To sue the at-fault driver directly for pain and suffering, you generally need to meet Michigan's "serious impairment of body function" threshold (MCL §500.3135) — essentially, an injury serious enough to affect your ability to lead your normal life, or death, or permanent serious disfigurement. If you meet that threshold, you have 3 years from the accident to file suit (MCL §600.5805).

Fault rule: 50% bar, but only on pain and suffering

Michigan's fault rule works differently from most states. Under MCL §500.3135: if you're found 50% or less at fault, your economic damages (medical bills, lost income) are reduced by your fault percentage — same as most modified comparative states. But if you're found more than 50% at fault, you're barred specifically from non-economic damages (pain and suffering) — your economic damages may still be reduced rather than eliminated entirely.

Insurance and the mini-tort

Michigan is a no-fault state — PIP is mandatory. Michigan also has a "mini-tort" provision (MCL §500.3135): you can recover up to $3,000 from the at-fault driver for vehicle damage not covered by your own collision insurance, such as your deductible, provided you weren't more than 50% at fault — a useful, often-overlooked option for straightforward property damage.

How Michigan's dual system actually plays out

Michigan's structure genuinely differs from most states because you're navigating two separate tracks at once. Say you're rear-ended and suffer a moderate back injury: your own PIP coverage pays your medical bills and a portion of lost wages regardless of who caused the crash, on the 1-year filing clock. Separately, if your injury meets the "serious impairment of body function" threshold, you can also pursue a lawsuit against the at-fault driver for pain and suffering, on the longer 3-year clock — but only if you clear that threshold, which is a genuinely disputed question in many cases. And if your only damage is to the vehicle itself, the mini-tort provision offers a simpler, smaller-scale option capped at $3,000, separate from both of the above.

A mistake worth avoiding in Michigan

Because the "serious impairment" threshold is a real, litigated question rather than a fixed checklist, it's a mistake to assume a moderate injury automatically qualifies — or automatically doesn't. Thorough, consistent medical documentation from early on is what actually supports that argument later, on top of everything it already does for the PIP side of the claim.

If a government vehicle or agency was involved

Michigan's notice deadlines for government claims vary sharply by what caused the crash. A claim against the State of Michigan itself must be noticed and filed with the Court of Claims within just one year (MCL 600.6431) — far short of the three-year deadline for an ordinary claim. If a road defect contributed to the crash, written notice to the responsible agency is due within 120 days (MCL 691.1404), and a bus crash involving a regional transportation authority carries its own 60-day notice window (MCL 124.419). These deadlines run independently of Michigan's no-fault system and of each other, so identifying exactly which agency is involved matters early.

If the crash resulted in a death

Michigan doesn't set a separate wrongful death deadline; instead it borrows whatever statute of limitations applies to the underlying claim — three years for an ordinary car accident (MCL §600.5805), running from the date of death. Michigan's beneficiary list is also broader than most states': spouse, children, descendants, parents, grandparents, siblings, and financially dependent stepchildren can all share in a recovery, filed by the estate's personal representative. If death occurs close to the filing deadline, Michigan gives the estate up to two additional years from when a personal representative is appointed (capped at three years total) to file.

Uninsured/underinsured motorist coverage

Michigan doesn't require UM/UIM coverage at all — not even an offer requirement. That matters more here than in most states, because Michigan's no-fault PIP only covers medical bills and lost wages, not pain and suffering; without UM/UIM, an uninsured at-fault driver leaves you with no route to that compensation beyond a lawsuit against someone who likely has no assets. One real trap: if you have UIM coverage, most policies require your insurer's written consent before you accept a settlement from the at-fault driver's insurer — settling without it can void your UIM claim entirely.

Beyond the deadline and the fault rule

The dual-track system above decides whether you have a claim, and against whom — it doesn't decide what either side of the claim is actually worth, or whether it's worth handling yourself. For that, see our guides on what affects a settlement, who pays your medical bills while a claim is pending, and whether Michigan's threshold system makes a lawyer worth it for your specific situation.

When it's worth talking to someone

Between the serious-impairment threshold, the split fault rule, and two different deadlines, Michigan claims involve more moving parts than most. A free, no-obligation conversation can help you understand which path applies to your situation.