What Happens if an Uninsured Driver Hits You? (Survival Guide)

The Risk Is Bigger Than the Headline Number

The Insurance Research Council's 2025 study, using 2023 claims data, found that 15.4% of US drivers carried no insurance at all — more than one in seven, and the highest rate since the IRC began tracking it.

But that is only half the exposure. A further 18% of drivers were underinsured: they had a policy, they were legally compliant, and their limits were nowhere near enough to cover the injuries they could cause.

Combined, roughly one in three drivers on the road is either uninsured or underinsured.

That second group is the one most guides ignore, and it is growing faster, because bodily injury claim severity keeps rising while state minimum limits mostly do not. A driver carrying their state's minimum liability coverage is fully legal and still cannot pay for a serious injury. The average bodily injury liability claim is around $24,000; plenty of state minimums sit at $25,000 per person or lower.

So the practical question is not only "what if they have nothing" but "what if they have almost nothing" — and the answer to both lives in the same place on your policy.

Where You Live Changes the Odds

A driver in Mississippi is roughly five times more likely to be hit by an uninsured motorist than a driver in Maine. Liability insurance is compulsory in 49 states and the District of Columbia — New Hampshire is the exception — but enforcement is largely reactive, catching people after a crash rather than preventing the gap.

The Coverage That Does the Work

Uninsured and underinsured motorist coverage sits on your own policy and steps into the place of the at-fault driver's missing or inadequate insurance. Twenty states and the District of Columbia require it; elsewhere it is optional, which is precisely where people go without.

UM/UIM typically costs somewhere between $86 and $199 a year — roughly 5% to 10% of a full coverage premium. Against a one-in-three chance that the driver who hits you cannot pay, that is one of the better-value line items on any policy.

The Mismatch on Almost Everyone's Policy

Pull out your declarations page and compare two numbers: your liability limits and your UM/UIM limits.

Most people find something like $250,000 in liability and $25,000 in UM. That means you carry ten times more protection for a stranger you might injure than for yourself and your own family.

It is usually an accident of how policies are sold — liability gets attention because it is required and because agents discuss asset protection, while UM defaults to the state minimum and nobody revisits it.

The fix is a phone call: match your UM/UIM limits to your liability limits. The additional premium is generally modest, because the insurer is pricing the risk that someone else causes a crash rather than that you do. Our guide to understanding liability limits covers how to set the underlying number.

Stacking

In some states, if you insure multiple vehicles, you can combine — "stack" — your UM limits across them, so three cars with $50,000 each can produce $150,000 available for one accident.

Availability varies considerably. Some states permit it, some prohibit it, and many insurers offer both stacked and non-stacked versions at different prices, with the choice recorded on your declarations page. If it is available where you live and you insure more than one vehicle, it is worth pricing. If you already have it, you may not know — check the page rather than assume.

At the Scene

Two things determine whether a UM claim goes smoothly, and both happen in the first hour.

Call the police, always. The single most damaging mistake is accepting cash and a friendly apology from a driver who says they will sort it out. Without an official report your insurer has no independent confirmation that the crash happened as you describe, that the other driver was at fault, and that they were uninsured. Carriers can and do deny UM claims on that basis.

Document the other vehicle before anything else. Photograph the plate first, then the driver's licence, then the vehicle and scene. Uninsured drivers leave. They also supply false names and expired insurance cards more often than insured ones. A plate number recovered from a photograph is worth more than any information they hand you verbally.

Collect witness names and numbers, and note the officer's name and the report number. The full procedure is in our guide on what to do after a car accident.

Notify Your Insurer Immediately

Policies require prompt notice, and late notice is a recognised ground for denial. You will see specific windows quoted — 30 days, 90 days — but the actual requirement is in your contract, and interpretations vary. Treat it as the same day, which removes the question entirely.

Do not spend weeks trying to arrange payment directly with the other driver first. That is the sequence that causes UM claims to fail: by the time they stop answering, the notice window may have closed.

Hit-and-run adds a second clock. Many states require a police report within a short window — often 24 hours — for the incident to qualify as a UM claim at all. See what to do in the first ten minutes of a hit and run.

Get Medical Attention Within 24 Hours

People often skip this when the other driver is uninsured, reasoning that there is no one to bill. That reasoning is backwards: in a UM claim your own insurer is evaluating your injuries, and they apply the same scrutiny any adjuster would.

A gap between the crash and the first medical record is the standard argument for reducing or denying an injury claim. Whiplash and soft-tissue injuries commonly present two to three days later, which is exactly the window in which the record needs to already exist.

Will It Raise Your Rate?

This is stated too confidently in most articles, so here is the accurate position.

There is no general national prohibition on rate increases after a not-at-fault claim. A few states restrict it: California under Proposition 103, New York under Insurance Law § 2335, and Massachusetts through its merit rating system, which assigns points only for at-fault incidents. Texas bars non-renewal on certain not-at-fault grounds. Most states have no such rule.

In practice, a single not-at-fault UM claim rarely triggers a direct surcharge, since it is not evidence about your driving.

The more common cost is losing a claims-free discount, which can be worth 10% to 25% of premium and which some carriers reset for any claim regardless of fault. Ask your carrier that specific question rather than the general one. Background in why your premium increased after a claim.

None of which should stop you claiming. You bought the coverage for this.

If You Have No UM Coverage

Three routes remain, in descending order of usefulness.

Collision repairs your car regardless of fault. You pay the deductible, and your insurer may pursue the other driver through subrogation to recover what they paid — your deductible should ride along with that. Ask explicitly whether they are pursuing deductible recovery; it is not automatic. See what a deductible really means.

Health insurance or PIP handles medical costs. Be aware of subrogation liens: if you later recover from the driver, your health plan can claim reimbursement from that settlement.

Suing the driver personally is the last resort and often uncollectable. Many uninsured drivers are uninsured because they have no money, which also makes them judgment-proof. A lawyer can run an asset search before you commit to the cost — but be realistic: a judgment you cannot enforce is a piece of paper. If the vehicle was written off, our guide on what to do if your car is totaled covers the valuation side.

Three Things Not to Do

Do not sign a release for a cash payment at the scene. A stiff neck can become a herniated disc. Signing away your right to further compensation for a few hundred dollars is irreversible, and injuries frequently declare themselves days later.

Do not discuss fault. An apology is a reflex; in a claim file it reads as an admission. State observable facts only.

Do not assume the ticket helps you. A citation for driving without insurance is a matter between the driver and the state. The court may fine them or suspend their licence; it will not collect your medical bills. Your recovery is a separate civil matter.

Two Situations

The claim that worked because the limits matched

A driver was struck at an intersection by someone with no coverage, sustaining injuries that ran to tens of thousands in medical costs.

Because their UM bodily injury limits had been set to match their liability limits rather than left at the state minimum, their own insurer was able to settle medical costs, lost wages and general damages in full. Had the UM limit sat at $25,000, the settlement would have stopped there and the balance would have been theirs.

The decision that determined the outcome was made years earlier, during a five-minute conversation about limits.

The hit and run

A driver was forced off the road by a vehicle that did not stop. No witnesses, no plate, significant damage to the vehicle.

In most states a hit-and-run is handled as an uninsured motorist claim, so uninsured motorist property damage covered the repair at a low deductible. Without it, collision coverage would have applied at a higher deductible — and without either, the entire cost would have been theirs, with nobody to pursue.

One caveat worth knowing: some states require physical contact between vehicles for a phantom-vehicle claim to qualify. Swerving to avoid a car that never touched you, and hitting something else, may not be a UM claim depending on where you live.

Both are composite illustrations, not accounts of specific individuals.

What to Do This Week

1. Find your declarations page and locate the UM and UIM limits.
2. Compare them to your liability limits. If UM is lower, that is the gap.
3. Ask what it costs to match them. Usually a modest increase.
4. Check whether you have UMPD and what its deductible is.
5. If you insure multiple vehicles, ask whether stacking is available in your state and what it costs.
6. Confirm your notice requirement so you are not learning it after a crash.

Frequently Asked Questions

Can I sue the driver if I have UM coverage?

Usually there is no point. Once your insurer pays under UM, it inherits your right of recovery against the driver. You cannot collect twice for the same damages.

Does UM cover a hit-and-run?

In most states, yes. Some require physical contact between the vehicles, which excludes phantom-vehicle cases where you swerved and were never touched. Prompt police reporting is usually a condition.

Does UM cover me outside my car?

Typically yes. UM bodily injury generally follows you as a pedestrian or cyclist and covers passengers in your vehicle. Check your own policy wording.

Is UM coverage required?

In twenty states and the District of Columbia. Elsewhere it is optional — which matters most in states with high uninsured rates and no mandate.

How long do I have to file?

Two clocks. Your policy requires prompt notice, measured in days. Your state's statute of limitations for legal action is far longer, commonly two to four years. The policy clock is the one people miss.

What if they had insurance but not enough?

That is a UIM claim, and it is increasingly the more common scenario given how many drivers carry minimum limits. UIM generally pays the difference between their limit and your damages, up to your own UIM limit.

Should I get a lawyer?

For property damage alone, usually not. For significant injuries, a disputed liability position, or a settlement offer that seems low relative to your medical costs, a consultation is worth having — most personal injury lawyers offer one at no cost.

The Short Version

One in three drivers is uninsured or underinsured, and the underinsured half is growing. The coverage that protects you sits on your own policy, costs roughly $86 to $199 a year, and on most policies is set to a state minimum nobody has looked at in years.

At the scene: call the police, photograph the plate before anything else, get checked by a doctor within 24 hours, and notify your insurer the same day. Never sign a release for cash.

Before any of that happens: read your declarations page and match your UM/UIM limits to your liability limits. That single line change is the difference between a claim that covers what happened to you and one that stops at $25,000.

Sources and Editorial Note

Uninsured and underinsured driver rates are from the Insurance Research Council's 2025 study, Uninsured and Underinsured Motorists: 2017–2023, reported via the Insurance Information Institute. Claim severity figures are industry averages published by ISO, a Verisk business. UM/UIM mandate counts and coverage cost ranges reflect published 2026 market data; premiums vary by state, carrier and limits.

Stacking rules, physical-contact requirements for hit-and-run claims, notice periods and not-at-fault surcharge restrictions are all state-specific and change. This article is general information, not legal advice. Confirm your own position against your policy documents and with your state insurance department, and consult a licensed attorney for any claim involving significant injury or disputed liability.