MCL 500.3135: Serious Impairment, Thresholds, and Mini-Tort Claims

MCL 500.3135 is the Michigan statute that decides when a car accident victim can sue an at-fault driver for pain and suffering instead of being limited to no-fault benefits. You can only bring that lawsuit if your injuries reach one of three thresholds: death, permanent serious disfigurement, or serious impairment of body function. Even when a threshold is met, comparative fault, your own insurance status, and specific damage caps shape what you actually recover. The statute also opens narrow lanes for excess wage losses and for vehicle damage that no-fault doesn’t cover.

The Three Injury Thresholds

Under MCL 500.3135(1), an at-fault driver is exposed to a noneconomic damages lawsuit only if the injured person suffered death, serious impairment of body function, or permanent serious disfigurement.¹ Noneconomic damages cover physical pain, emotional distress, and lost quality of life. If your injuries don’t fit one of the three categories, you cannot recover for those losses no matter how clearly the other driver caused the crash.

Death is straightforward. Permanent serious disfigurement generally means visible scarring or physical changes that meaningfully alter your appearance, evaluated by an ordinary observer looking at the scar’s size, location, and permanence. Significant facial scarring often qualifies; a small scar hidden under clothing usually does not. Serious impairment of body function is where most cases are fought, and the statute defines it with a specific test.

The Serious Impairment Test

MCL 500.3135(5) sets three requirements, all of which must be met.¹

The injury must be objectively manifested. Someone other than you has to be able to verify it through symptoms or diagnostic findings. A herniated disc confirmed on MRI qualifies. Back pain that shows up on no scan generally does not. Medical imaging, physician assessments, and physical therapy evaluations are the kind of proof courts want. Subjective pain complaints alone are not enough.

The impairment must involve an important body function that matters to you personally. This is individualized. A hand injury carries different weight for a surgeon than for someone at a desk. Courts look at what the affected body system actually does in your daily life, not just whether the injury has a serious-sounding medical label.

The impairment must affect your general ability to lead your normal life. Courts compare your pre-accident life to your post-accident life across work, recreation, household tasks, and daily routines. The impairment doesn’t have to be permanent, but it must have a real, documented effect on how you function. Work absences, written activity restrictions, and treatment records help establish this element.

Judge Versus Jury on the Threshold

Under MCL 500.3135(2)(a), whether your injuries meet the serious impairment or permanent serious disfigurement threshold is a question of law for the judge if the facts about the nature and extent of your injuries are undisputed, or if any factual dispute is immaterial.¹ Defendants routinely file motions for summary disposition arguing the threshold isn’t met as a matter of law. If the judge agrees, the case ends before a jury ever hears it. Many Michigan auto cases die here.

A genuine, material factual dispute about injury severity sends the question to the jury. Closed-head injuries get a special rule: if a licensed physician who regularly diagnoses or treats such injuries testifies under oath that there may be a serious neurological injury, that alone creates a jury question.¹

Comparative Fault and the 50% Bar

Meeting a threshold doesn’t guarantee full payment. Under MCL 500.3135(2)(b), a plaintiff found more than 50% at fault recovers nothing for noneconomic damages.¹ The line is absolute. At 51% fault, the recovery is zero, regardless of how severe the injuries are.

If you are 50% or less at fault, you can still recover, but the award drops by your fault percentage. A $100,000 verdict with 30% fault on your side pays out $70,000. Fault is assigned from police reports, witness testimony, traffic patterns, and physical evidence. The same 50% bar and proportional reduction apply to mini-tort vehicle damage claims under subsection (3)(e).

The Uninsured Driver Bar

MCL 500.3135(2)(c) blocks a category of plaintiffs entirely. If you were driving your own vehicle without the required no-fault insurance in effect at the time of the accident, you cannot recover any noneconomic damages.¹ It doesn’t matter that you cleared the injury threshold. It doesn’t matter that the other driver was entirely at fault. Driving your own uninsured car forfeits the right to sue for pain and suffering.

The bar applies to owners and operators of the uninsured vehicle. A passenger in an uninsured vehicle is not automatically subject to the same restriction.

Suing for Excess Economic Losses

Noneconomic damages require clearing the threshold. Certain economic losses do not. MCL 500.3135(3)(c) preserves the right to sue an at-fault driver for financial losses that exceed what no-fault benefits pay, regardless of injury severity.¹

Michigan’s personal protection insurance pays work loss benefits for up to three years after the accident, capped at a monthly figure that adjusts annually.² For October 2025 through September 2026, the Michigan Department of Insurance and Financial Services set the maximum monthly work loss benefit at $7,201. If you earn more than the cap, or if you remain unable to work after the three-year period ends, you can pursue the at-fault driver for the shortfall. The same logic applies to survivor’s loss benefits when the deceased’s financial contributions exceeded the statutory limits.

These claims are built on documentation: tax returns, employment contracts, pay stubs, benefit statements. The comparative fault rules in subsection (2)(b) do not apply to excess economic loss claims under subsection (3)(c).

Mini-Tort Claims for Vehicle Damage

MCL 500.3135(3)(e) allows a separate, small claim for vehicle damage. For accidents on or after July 1, 2020, you can recover up to $3,000 for vehicle damage not covered by your own insurance.¹ Before that date the cap was $1,000. This is the “mini-tort” claim.

If you carry collision coverage with a $500 deductible and your insurer pays the rest, the at-fault driver is on the hook for that $500 through a mini-tort claim. With no collision coverage at all, you can pursue up to the full $3,000. Comparative fault applies here too: your recovery is reduced by your fault percentage, and more than 50% fault means zero.

How Long You Have to File

Michigan’s general personal injury statute of limitations governs third-party auto negligence claims under MCL 500.3135: three years from the date of the accident.³ Miss that window and the court will almost certainly dismiss the case, however strong the underlying facts may be. The same three-year clock runs for wrongful death actions from a motor vehicle accident.

There is a tolling exception for minors. Someone under 18 at the time of the accident has one year after turning 18 to sue, even if the standard three years has already expired.⁴ A similar tolling rule applies to people who are legally incapacitated when the claim arises. The disability has to exist at the time of the accident. Developing one later does not restart or extend the clock.

1
Michigan Legislature. Michigan Compiled Laws 500.3135 – Tort Liability for Noneconomic Loss
2
Michigan Legislature. Michigan Compiled Laws 500.3107 – Personal Protection Insurance Benefits
3
Michigan Legislature. Michigan Compiled Laws 600.5805 – Periods of Limitation
4
Michigan Legislature. Michigan Compiled Laws 600.5851 – Disabilities