Diminished Value Calculator
A repaired car is still worth less than one that was never hit — that gap is diminished value, and in California you can claim it from the at-fault driver's insurer. Enter five details and see both the insurer's 17c figure and a fair-market range. Free, anonymous, and the math is public.
Diminished Value Estimator
Five quick details — get an instant range. No phone number required.
What it was worth the day before the crash — check KBB or Edmunds private-party value, not what you paid.
Newer vehicles lose the most resale value to accident history.
Mileage at the time of the accident
How bad was the damage?
Pick the most serious that applies — the repair invoice is the best guide.
Was it professionally repaired?
An itemized body-shop invoice is the single strongest document in a DV claim.
Takes about 30 seconds · your estimate updates as you answer
Prefer to talk now? (949) 331-9844
How it works
The actual math — no black box
No "proprietary AI": the low end uses the 17c formula insurers apply nationwide, and the high end reflects the fair-market approach independent appraisers use to challenge it.
- 1
Cap the base loss
17c starts at 10% of your car's pre-accident market value — that cap is the first insurer-favored assumption.
- 2
Discount for damage and mileage
Multiply by a damage modifier (0.25 minor → 1.00 structural) and a mileage modifier (1.0 under 20k mi → 0 at 100k+). That's the 17c figure — our low end.
- 3
Compare to the market
Dealers and buyers discount a repaired car by more than 17c admits. Well-documented claims commonly support 1.5–2.5× the 17c figure — our high end.
The output is a range, not a number: real DV claims turn on the repair record, an appraisal of your specific vehicle, and negotiation — things no calculator can see.
What strengthens a claim
Documentation that strengthens a DV claim
- Itemized body-shop repair invoice — especially any structural or frame lines
- Pre-accident value evidence: KBB/Edmunds printout, recent purchase or trade-in offer
- An independent diminished-value appraisal (typically a few hundred dollars)
- The CARFAX/AutoCheck report showing the accident now on record
- Comparable listings: same model with and without an accident history
DV claims are paid on paper. The insurer's first response is often a 17c number or a denial — documentation is what moves it.
What moves the number in real life
- Who was at fault. In California you claim DV against the at-fault driver's insurer (third-party). Your own policy usually excludes it for first-party claims.
- Repair quality and record. A documented professional repair supports value; an unrepaired or DIY-repaired car makes the loss harder to separate from the damage itself.
- Vehicle profile. Newer, low-mileage, higher-value vehicles lose the most to accident history — luxury and near-new cars see the largest DV.
- Appraisal vs. formula. 17c is a formula, not the law. An independent appraisal of your actual vehicle is the standard way to support a higher figure.
Were you injured in the accident?
Diminished value is only the property side. If anyone was hurt, the injury claim usually carries far more value — estimate it in about 60 seconds. And feeling fine today isn't the last word: neck and soft-tissue symptoms from a rear-end hit often show up days or weeks later.
Good to know
Frequently asked questions
What is a diminished value claim in California?
When another driver damages your car, California law lets you recover not just repair costs but the drop in resale value the accident history causes — a repaired car with an accident on its CARFAX sells for less than the same car without one. You claim it from the at-fault driver's insurer as part of the property-damage claim.
How is diminished value calculated?
Insurers usually open with the 17c formula: 10% of the pre-accident market value, multiplied down by damage severity (0.25–1.00) and mileage (1.0 to 0). Independent appraisers instead compare actual resale prices of similar cars with and without accident history, which typically supports 1.5–2.5 times the 17c figure when the claim is well documented. This calculator shows both.
How long do I have to file a diminished value claim in California?
Generally 3 years from the accident date — property-damage claims fall under California's 3-year statute of limitations (Code of Civil Procedure §338), a year longer than the 2-year injury deadline. Claims against a government entity can be as short as 6 months, and other exceptions exist — confirm your deadline with an attorney instead of assuming.
Can I claim diminished value from my own insurance company?
Usually not — most California auto policies exclude diminished value from first-party collision claims, and courts have upheld that exclusion. DV claims are normally made against the at-fault driver's insurer. If the other driver was uninsured, an attorney can tell you whether any coverage still applies.
Is this estimate accurate for my car?
It's a starting range built from published formulas, not an appraisal of your specific vehicle. Actual diminished value depends on your car's exact condition, options, local market, and documentation. Treat the range as orientation — an independent appraisal is how a real claim gets supported.
Keep reading
About this estimate
This tool is for informational and educational purposes only. It produces an illustrative range from the values you enter, using publicly documented methods (the 17c formula and fair-market comparisons). It is not legal advice, a vehicle appraisal, an offer, or a guarantee or prediction of any outcome. Every claim is different: actual results depend on the specific vehicle, the documentation available, the applicable insurance coverage, and negotiation. Using this tool does not create an attorney-client relationship.