Your car starts to depreciate once you drive it off the dealership and will continue to lose its value over the years. However, the value significantly drops after an accident, even if you get the vehicle back to its initial condition. That’s what diminished value or diminution of value is.

In this post, we will explain what diminished value is, the types, how to calculate it, and how to file a diminished value claim.
When your vehicle is involved in an accident, its value is reduced. If you decide to resell or trade it for another vehicle, your vehicle’s history will show that it has been in an accident. This will reduce the value you will get for your car. The lost value is what is referred to as the diminished value. It is the difference in your car’s value or market price before and after an accident.
Diminished value is, therefore, different from depreciation, a reduction in your car’s value over time. Depending on the circumstances of the accident, you can file a diminished value claim, in which either your insurance company or the insurance company of the driver at fault will pay for your vehicle’s lost value.
Before filing a diminished value claim, however, it is vital to know the various types of diminished value.
Three types of diminished value are inherent, immediate, and repair-related.
This is the loss in your vehicle’s value just because it was involved in an accident. Even if it is repaired to a near-perfect condition, your vehicle’s history report will show that it has been in an accident, and this will reduce its market value. For this reason, an inherent diminished value claim is the most commonly filed and accepted type of diminished value claim.
Immediate diminished value is the worth of your car immediately after an accident and before it is repaired. Although the court systems use this type, it is rarely used by insurance companies because most cars are repaired after an accident. And depending on the circumstances of the accident, your insurance company may pay for repairs.
Repair-related diminished value is based on the possibility that your car may not be restored to its original condition. It is due to the use of aftermarket parts rather than genuine or original equipment manufacturer (OEM) parts or low-quality repairs which add up to your vehicle's loss value. Using OEM parts or original equipment manufacturer parts and high-quality repairs helps prevent repair-related diminished value.
Insurance companies commonly calculate the diminished value using the 17c formula, which State Farm created in the Mabry V State Farm lawsuit in Georgia. It appeared in paragraph 17, section C, hence the name 17c. Here are the steps to calculate the diminished value using the 17c formula.
The first step is to determine the worth of your car before the accident. You can also use certain websites to calculate the overall value.
Insurance companies apply a base loss value of 10% after a vehicle has been in an accident, which is the maximum they will pay for a claim. So you will have to calculate 10% of the value estimated by Kelly Blue Book or NADA.
For instance, if your car is worth $30,000, then calculating 10% will be $30,000 x 10% = $3,000
Here the 10% base value is adjusted to reflect the structural damage done to your car. It is multiplied by a number ranging from 0.00 to 1.00, where 0.00 represents no structural damage, and 1.00 represents severe structural damage. Below is a breakdown of the numbers:
Supposing a vehicle sustained minor damages in an accident, then using the above example, applying a damage multiplier will be $3,000 x 0.25 = $750.
Insurance companies will adjust the value again to reflect your car's mileage. This number also ranges from 0.00 to 1.00 where:
So using the above example and supposing your vehicle has 45,000 miles, then applying the mileage multiplier will be $750 x 0.60 = $450
You’ll receive this final amount from the insurance company as the diminished value.
Before filing a diminished value claim, you need to consider the condition of your vehicle before the accident and whether or not the accident was your fault. Your claim is denied if your vehicle is too old, has lots of mileage, or has sustained too many structural damages. Also, the company may not pay your claim if the accident was your fault.
Generally, the best option is to file the claim with the insurer of the driver at fault. Only file the claim with your insurer if the driver at fault is not insured or you are a hit-and-run victim. Lastly, remember that your responsibility is to prove to the insurance company that your vehicle has lots of value.
Below are the steps you can follow to file a diminished value claim:
If everything goes through and depending on the specifics of your claim, you can expect your claim to be settled within one month of filing.
Calculating diminished value is easier than it may seem. Only a few steps are involved, including finding your vehicle's value, calculating 10% of the value, and applying a damage and mileage multiplier to the 10% value. With the proper steps, you can have your diminished value claim settled within a month of filing your claim.

The Ford Transit is the automaker’s full-size cargo and passenger van offering, designed to serve a wide range of commercial and lifestyle applications. With 37 available configurations, the platform ...See More
Read the Full Article
The Chevrolet Tahoe is a full-size, three-row SUV with a standard V8 engine and available diesel power. Built on the same platform as the Chevrolet Silverado 1500 pickup, the Tahoe benefits from its ...See More
Read the Full Article
It is the end of the line for the Ford Escape. After 25 years as a fixture of Ford’s lineup, 2026 will be the compact SUV’s last model year.
Read the Full Article
The Colorado is Chevrolet’s midsize pickup. It ranks among the segment’s most capable trucks for payload and towing, and can be configured for both work and off-road adventures. For 2026, the ...See More
Read the Full Article