Is 10% of my car's value a good estimate?

It's a common shorthand, but it's not a rule. Your actual diminished value could be higher or lower depending on damage, age, mileage, and how the market prices your specific car's history.

Does a more expensive car mean a bigger claim?

Usually. A higher pre-accident value means there's more value available to lose, so higher-value vehicles tend to have larger diminished value claims.

Can I get diminished value on an older car?

Sometimes, but the loss is generally smaller. Older, higher-mileage vehicles have already depreciated a lot, so the added hit from an accident is usually less.

How Much Is My Diminished Value Claim Worth?

A diminished value claim is worth the gap between what your repaired car would sell for and what an identical car with no accident history would sell for — commonly a few hundred to several thousand dollars, driven mostly by the car's value, how bad the damage was, its age, and its mileage.

There's no flat percentage

You'll see rules of thumb like "10% to 25% of the car's value," but those are marketing shorthand, not measurements. The real number is whatever the market discounts your specific vehicle for having an accident on its record. Two cars worth the same amount can have very different diminished value depending on damage severity, desirability, and how buyers in your area treat history.

What raises or lowers the number

Pre-accident value — the more the car was worth, the more value it can lose.
Damage severity and type — structural or frame damage hurts far more than a cosmetic repair.
Age and mileage — newer, lower-mileage cars lose more; older, high-mileage cars lose less.
Make and model — desirable vehicles that hold value have more to lose.
How the reported accident reads on the history report.

Why the insurer's first number is low

Insurers typically open with the 17c formula, which caps the base loss at 10% of the car's value and then shrinks it further for mileage. It's designed to keep payouts small and predictable, not to reflect your actual loss. That first figure is a negotiating anchor — you don't have to accept it.

How to find your real number

The most defensible figure comes from the market: compare your car against real listings of similar vehicles near you, some with clean histories and some with reported accidents, and the difference is your evidence-backed estimate. That's what CarAccidentValuation builds for you, and it's a lot harder for an adjuster to dismiss than a round number.

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Frequently asked questions

Is 10% of my car's value a good estimate?: It's a common shorthand, but it's not a rule. Your actual diminished value could be higher or lower depending on damage, age, mileage, and how the market prices your specific car's history.
Does a more expensive car mean a bigger claim?: Usually. A higher pre-accident value means there's more value available to lose, so higher-value vehicles tend to have larger diminished value claims.
Can I get diminished value on an older car?: Sometimes, but the loss is generally smaller. Older, higher-mileage vehicles have already depreciated a lot, so the added hit from an accident is usually less.

This guide is general information, not legal advice. Rules, deadlines, and eligibility for diminished value and total-loss claims vary by state and by insurance policy.