Most people find this page without knowing the loss has a name. It is called diminished value.
Why a repaired car is worth less
Three things happen to a car after a collision, and only the first one gets fixed.
The record. The accident is reported, and it shows up on the history report a buyer or a dealer pulls before making an offer. Nothing about the quality of the repair removes that entry.
The doubt. A buyer looking at two identical cars, one with a clean history and one with a repair, does not know whether your car was fixed well. They cannot inspect the inside of a rebuilt structure. So they discount for the risk, or they walk to the other car.
The parts and the work. Replaced panels, a straightened structure, refinished paint and recalibrated cameras or sensors are not the same as factory-original. Some of it can be measured later; some of it just makes the car harder to sell.
The repair bill pays for the first item on that list. Nobody has paid you for the other two. That is the whole idea.
How much value a car loses after an accident
There is no single percentage, and anyone who gives you one number for every car is guessing. What we can show you is how our own method moves, and what it produced on real sample cases.
The pattern in our method. The biggest driver is how expensive the repair was compared with what the car was worth. Our published method (`config/method_v0_1.json`, version 0.1.0) starts from that ratio: a repair worth about 5% of the car's value starts near a 4% loss, about 10% starts near 6%, about 20% starts near 9%, and about 30% starts near 12%. From there the number moves up or down for severity, structural work, the car's age and mileage, prior accidents, repair quality and whether the accident is visible on the history report yet. The method caps the result at 35% of the car's value and never returns less than 2%.
What that looked like on four sample cases. These are real outputs of our own worked examples. They are examples, not a promise about your car.
| Sample case | Value before | Repair cost | Typical insurer formula | Documented estimate | |---|---|---|---|---| | Mid-size SUV, rear damage with sensor work | $29,582 | $7,200 | $887 | $2,750 | | Sedan, moderate damage, prior entry on history | $28,245 | $5,481 | $1,130 | $1,800 | | Electric car, structural damage and airbags | $33,000 | $11,840 | $2,640 | $7,025 | | Large SUV, severe structural damage | $78,000 | $16,009 | $7,800 | $12,250 |
The right-hand column is the point of the table. The insurer's opening number and a documented estimate are usually not close, and the difference is what the argument is about.
What decides your number
- Repair cost against the car's value. The single strongest signal.
- What was actually repaired. Structural work, a replaced welded panel, deployed airbags and driver-assistance recalibration all push the loss up. Bumper cover and paint push it down.
- Age and mileage. A newer car with average miles loses more, in dollars and in percentage, than an old high-mileage one.
- What the car is. Trucks, SUVs and electric cars that hold their value well tend to lose more.
- Prior accidents. A car with an earlier entry on its record has already taken part of the hit, so a second one moves the number less.
- Whether it shows yet. If the accident has not appeared on the history report, the market has not reacted to it, and the estimate is lower.
What you can do about it
- Check whether the claim is yours to make. In most states this is a claim against the at-fault driver's insurer, not your own. Some states allow it under your own policy and some do not allow it at all, and every state has a deadline. Your state page has the rule and the filing period for where the accident happened.
- Get the facts together. The final repair invoice with supplements, the vehicle history report, a written trade-in or purchase offer from a dealer, and photos.
- Put a documented number on it. A figure with a stated method and market evidence behind it is something the insurer has to answer. A figure with nothing behind it is not.
- Send the request yourself, in writing. You keep every dollar you recover. We never take a percentage, and we never contact your insurer for you.
Free estimate first, in about 90 seconds, no account: start the calculator.
Going deeper: what diminished value is · how the insurer's formula works · how we calculate.
Questions
How much does a car's value decrease after an accident?
It depends most on how big the repair was next to the car's value. In our own worked examples the documented estimates ran from about $1,800 on a $28,245 sedan to $12,250 on a $78,000 SUV with severe structural damage. Those are examples, not a promise. Our method caps any estimate at 35% of the car's value.
How much does a car typically lose in value after an accident?
There is no honest "typical". A light cosmetic repair on an older car can land near the 2% floor in our method; a structural repair on a newer car can land several times higher. The calculator runs your own numbers rather than an average.
How can I estimate the value of my car after an accident?
Start from what the car was worth immediately before the accident, then subtract the loss the repair history causes. Free tools that only run the insurer's formula give you the insurer's opening number. Our calculator shows both, side by side, so you can see the gap.
How long after an accident can you claim diminished value?
Every state sets its own filing period, commonly two to four years from the accident date, and it does not pause while a claim is open with the insurer. Your state page shows the period and the deadline date for your accident.
Can insurance deny a diminished value claim?
Yes. The common answers are that the repair was completed and paid, that the evidence on file does not show a loss, or that the state's law does not support the claim. A denial is an answer, not the end: the follow-up letters, the state insurance department complaint route and small claims court all still exist.
What is the average payout for a diminished value claim?
We do not publish an average, because we do not have settlement data we could stand behind, and a number invented to look reassuring would be worthless to you. What we can show is our own worked examples and the method behind them.
How do I find out what my car is worth after being totaled?
That is a different claim. If the insurer declared the car a total loss it was not repaired, so there is no diminished value claim — the argument is about the car's actual cash value instead. This page and our calculator are for repaired cars.