Diminished Value Calculator
Find out what your car lost after an accident — even after perfect repairs. This calculator measures your loss against real comparable vehicles, so you get a number backed by the actual market.
How the calculator works
Why a market-based number holds up
Your diminished value is the gap between what your car was worth before the accident and what it's worth now that its history shows a wreck. The most defensible way to measure that gap is with the real market: what similar cars with a clean history sell for versus similar cars with a reported accident.
That's exactly what this calculator does — it pulls comparable vehicles for your year, make, model, trim, and mileage, so the number you claim is grounded in what buyers actually pay, not a generic estimate.
What the number actually measures
Even after flawless repairs, a car with a reported accident sells for less — buyers simply pay less once it's on the history report. This calculation isolates that specific, history-based loss for your car, so you can put a real dollar figure on your claim instead of guessing.
Diminished value: common questions
How diminished value is calculated, what it's worth, and how to claim it after an accident that wasn't your fault.
- How do I calculate the diminished value of my car?
- Diminished value is the gap between what your car was worth before the accident and what it's worth now that its history shows a wreck. The most defensible way to measure it is with real comparable listings: what similar cars with a clean history sell for versus similar cars with an accident on record. That market difference — not a fixed formula — is your diminished value.
- How do you calculate the devaluation of a car after an accident?
- Compare your repaired car against the current market. Pull recent listings and sales for the same year, make, model, trim, and mileage — some with clean histories, some with reported accidents — and the spread between them is the devaluation. A comparable-based number tends to hold up far better with an adjuster than a generic percentage.
- How much is a diminished value claim usually worth?
- It varies widely with the car's value, age, mileage, and how severe the damage was. Newer, higher-value vehicles with clean prior histories tend to lose the most. The only way to know your number is to measure your specific car against the current market rather than guess from an average.
- How do I file a diminished value claim?
- Diminished value is generally claimed against the at-fault driver's insurance company. In practice that means documenting the loss with comparable-vehicle evidence and sending that claim to the insurer. The stronger and better-documented the market evidence, the more seriously it tends to be taken.
- Is there a time limit to file a diminished value claim?
- Deadlines vary by state and by insurer, so it's best not to wait. Filing while the accident and repair records are fresh generally makes the claim easier to support. If you're unsure of the deadline where you are, check your state's rules before assuming there's still time.
- Can I claim diminished value if the accident wasn't my fault?
- That's the typical scenario for a diminished value claim — it's usually pursued against the at-fault driver's insurer, since their driver caused the loss in your car's value. Whether and how it applies can depend on your state, so it's worth confirming the rules where the accident happened.
- How long does it take for a car to lose value after an accident?
- The drop is largely immediate: once an accident appears on the vehicle's history report, its resale value falls right away, even after flawless repairs — buyers simply pay less for a car with a reported accident. That instant history-based loss is what a diminished value claim recovers.