Diminished value after a hit-and-run or an uninsured driver

A parked car hit overnight, a driver who left the scene, or a driver with no insurance: all three take away the usual claim against another driver’s insurer. This guide covers what replaces it. The general difference between claims against another driver’s insurer and claims on your own policy is explained in first-party vs third-party diminished value. This is general information, not legal advice.

Where the claim goes

Why UMPD can differ from collision coverage

Collision coverage is a promise in your contract, often to repair or replace, and many courts have read that wording to exclude lost market value after a proper repair. Uninsured motorist coverage is different in kind. It pays what you could have recovered from the at-fault driver, and that driver would have owed diminished value where state law allows it. Several authorities have relied on that difference:

• Maryland. The Maryland Insurance Administration’s Bulletin 24-8 (April 2024) states its enforcement position that the required uninsured/underinsured coverage must cover diminution of value, subject to the limits. It describes that coverage as responding when the at-fault driver is uninsured, underinsured, or “cannot be identified (such as hit-and-run driver).” See the Maryland page.
• Texas. The Texas Department of Insurance’s Bulletin B-0027-00 says an insurer is not obligated to pay first-party diminished value under collision when the car is completely repaired, but “may be obligated to pay” under uninsured/underinsured motorist coverage for loss of market value, regardless of the completeness of the repair. See the Texas page.
• Indiana. In Dunn v. Meridian Mutual (2005), the Indiana Supreme Court held that uninsured motorist coverage, which stands in for the uninsured driver’s liability, covered diminished value. That case applied Tennessee law. See the Indiana page.
• Washington. In Heaphy v. State Farm (2003), the Court of Appeals noted that State Farm conceded diminished value was covered under the owner’s underinsured motorist coverage, leaving only whether and how much loss she had. See the Washington page.

Other courts have gone the other way on the wording in front of them. In Watkins v. Allstate (2024), the federal Fifth Circuit, applying Mississippi law, upheld an uninsured motorist property damage exclusion for “any decrease in the property’s value, however measured.” The at-fault driver’s limit there had been used up on the repair, so the owner turned to his own policy for the rest. See the Mississippi page.

In some states, uninsured motorist coverage does not reach vehicle damage at all. Florida’s statute, for example, describes required uninsured motorist coverage in terms of bodily injury. See the Florida page.

Hit-and-run: read the conditions

Policies and state laws often set conditions for a claim when the other driver is never identified. Delaware’s statute is one example. It covers hit-and-run vehicles for property damage, but the damage must be caused by physical contact (or by a noncontact vehicle whose driver and owner are both unknown), the accident must be reported to the police or a proper authority, and property damage carries a $250 deductible unless agreed otherwise. Its definition of property damage includes loss of use. See the Delaware page.

Your policy may have its own conditions. Look in the uninsured motorist section for:

• whether property damage is included, and its limit and deductible;
• whether an unidentified (“hit-and-run”) vehicle counts as uninsured;
• any physical contact requirement, or a deadline to report to police or to the insurer;
• any exclusion for “diminution in value,” “decrease in value” or similar wording.

Evidence for a parked-car or hit-and-run claim

With no other driver to confirm what happened, the record you build in the first days carries the claim.

• Report it to the police promptly and get the report number. Some policies and statutes require it.
• Photograph everything before anything is moved: the damage, paint transfer, debris, the car’s position and the surroundings.
• Ask for camera footage early. Businesses, building managers and neighbors may not keep recordings long. If your car records while parked, save the clip before it is overwritten.
• Note witnesses and their contact details.
• Notify your insurer in writing, and keep the claim number and every letter.

If the driver is identified later, the claim against that driver’s insurer may open up again. Tell your insurer and your appraiser right away.

Deadlines can be shorter

A claim against another driver is governed by your state’s statute of limitations. A claim on your own uninsured motorist coverage may also be governed by a deadline in the policy. In Sarmiento v. Grange Mutual (2005), the Ohio Supreme Court held that a two-year contractual limit for uninsured and underinsured motorist claims was reasonable and enforceable. Read your policy’s “legal action against us” and uninsured motorist sections, and speak to a licensed attorney if a deadline is close.

Making the claim

The steps are the same as any claim; see filing a diminished value claim with any insurer. Send your insurer a written demand under the uninsured motorist claim number, with the repair invoice and an appraisal. Our demand letter guide covers what to include. A diminished value appraisal measures the loss the same way whichever coverage pays it. Send the invoice and the police report for a free claim review. If you order, a typical appraisal is $250–$350; the report supports your claim and does not guarantee a payment. Autoloss is not affiliated with or endorsed by any insurer named here.