Categories of accelerated depreciation
The market value of a damaged vehicle after it is repaired, is commonly valued by one of the categories of accelerated depreciation.
Categories
| Category of accelerated depreciation | Theory | 
|---|---|
| Inherent or perceptual Note: Commonly used accelerated depreciation.  | A future buyer of the vehicle involved in a crash is likely to perceive the vehicle as 
 Rationale for using inherent or perceptual accelerated depreciation: When a vehicle has been in a crash, it is maintained that the crash history has the effect of lowering that vehicle's fair market value. For the consumer who is faced with two identical vehicles for sale; except, one vehicle is crash free and the other is not, an informed consumer is likely to select the crash free vehicle; unless, the price of the latter is sufficiently discounted to accommodate the sale. Note: This theory is often supported by automobile dealers who discount a vehicle’s trade-in value. | 
| Repair-related | When repairs are less than optimal, the amount of the resale value of a vehicle could be reduced as a result of  
 When a vehicle has sustained damages and been repaired, one must consider the extent of those repairs. Some of these factors include the  
 | 
| Part-related | When a customer chooses to replace "name brand" parts on the vehicle with generic parts. Example: Replacement of a BMW windshield with a generic one would mean the BMW no longer exhibits BMW glass products, which arguably exhibits less market value. |