Diminished value claims in Illinois

Yes, from the at-fault driver's insurer. Once an accident appears on a car's vehicle history report, buyers and dealers pay less for it no matter how good the repair. That gap is diminished value, and in Illinois it is part of the property damage the at-fault driver owes you.

Illinois measures vehicle damage as the reasonable cost of repair plus the difference between what the car was worth right before the accident and what it is worth after repair. The total cannot exceed what the car lost in value if it had never been fixed, and it cannot exceed the car's pre-accident fair market value. In plain terms: the repair bill and the diminished value are two parts of one claim against the at-fault driver.

Source Illinois Pattern Jury Instruction (Civil) 30.10

Usually not. In Sims v. Allstate, the Illinois Appellate Court held that a standard collision policy promising to "repair or replace" the car does not require the insurer to pay for lost market value after an adequate repair. Diminished value in Illinois is a third-party claim: it is owed by the at-fault driver and paid by that driver's liability insurer, not by your own collision coverage.

Source Sims v. Allstate Insurance Co., 365 Ill. App. 3d 997 (5th Dist. 2006)

Five years from the accident. Illinois gives you five years from the date of the accident to sue for damage to personal property, which includes a vehicle. That is one of the longest windows in the country. Insurers still settle most diminished value claims within weeks of a documented demand, so the deadline matters mainly if the claim is ignored.

Source 735 ILCS 5/13-205

Illinois uses modified comparative fault. If you were more than 50% responsible for the crash, you recover nothing. If you were 50% or less at fault, your recovery is reduced by your share. A rear-end collision or a driver who ran a light is typically a clear-fault case; disputed-fault accidents are harder and we review them individually.

Source 735 ILCS 5/2-1116

Usually $850 to $2,150 for a qualifying car, and more for newer, low-mileage vehicles or heavy structural repairs. Illinois does not set a formula. The number is whatever the market actually takes off the car, which we measure from sales of comparable vehicles with and without a reported accident.

Across tens of thousands of recent listings, a vehicle with a structural repair in its history lists for roughly 15% less than the same vehicle with a clean record. Lighter cosmetic repairs cost less, but a reported accident of any kind moves the price.

Claims are strongest when the car is:

• 2020 or newer car or truck
• No prior accidents
• Fewer than 100,000 miles
• 3rd party (liability) claims only

Adjusters in Illinois usually respond with one of three positions: the repair restored the car to pre-loss condition, so nothing is owed; their formula produces a few hundred dollars; or the claim is not covered. None of those is the legal test. Illinois measures the loss by market value before and after, and documented comparable sales are what change an adjuster's number.

The Illinois Department of Insurance does not set a formula for diminished value. The amount is whatever you can prove the market takes off the car, which is why documented comparable sales matter more than a calculator.

We buy the claim from you. You get $500 the day you sign, and our attorneys and appraisers pursue the at-fault insurer at our own risk. When the insurer pays, you receive the rest of the recovery less the $500 already paid and a flat $350 fee, typically within 90 days. If the insurer refuses, you keep the $500.

To start, you need the other driver's insurance information, a police report, and your repair estimate. Most people finish the online form in under ten minutes.