How to File a Diminished Value Claim

A diminished value claim recovers the resale value your car lost simply because it now has an accident on its record — even after a flawless repair. Filing one is, at its core, proving a specific dollar figure to the right insurance company. Here’s the process.

Before you start: what you’ll need

Three things make or break a diminished value claim:

• Fault. Diminished value is normally a third-party claim, so you generally need the other driver to be at fault and insured.
• Repair records. The estimate and final repair invoice show what was damaged and fixed — context for the loss.
• A documented valuation. A number backed by real comparable vehicles is what turns a request into a claim the insurer takes seriously.

How to file a diminished value claim, step by step

1. Confirm you weren't at fault and identify the insurer. Diminished value is almost always a third-party claim, so pin down the at-fault driver and their insurance company — that carrier is who you'll file against.
2. Get a documented diminished value report. Order a comparable-vehicle valuation that measures your car's lost market value with real data. This is the single most important piece of evidence.
3. Write a demand letter. State your diminished value figure in writing, explain how you reached it, and attach the report, repair records, and photos.
4. Submit it to the at-fault insurer and negotiate. Send the demand and expect a low first counter — often a 17c figure. Respond with your documented value and comparable listings.
5. Escalate if they won't be fair. If the insurer won't move and the gap is real, the next steps and deadlines depend on your state — which is where an attorney makes the difference.

What your demand letter should include

The demand is where the claim lives or dies. A strong one includes:

• Your vehicle’s year, make, model, trim, and mileage;
• The date of loss and confirmation the other driver was at fault;
• Your diminished value figure and how it was calculated;
• The comparable-vehicle report and supporting market listings; and
• The repair estimate and final invoice.

How long do you have to file?

There is a time limit to bring a diminished value claim, and it varies from state to state. Because the deadline differs by location — and missing it can end the claim entirely — it’s best to act sooner rather than later. Run a free review and we’ll confirm the window that applies to you.

Filing a diminished value claim: FAQ