Glossary

Depreciation

The loss in a car's value over time from age, mileage and wear, which insurers account for when calculating actual cash value.

Also called: vehicle depreciation

Depreciation is the decline in a vehicle's value as it ages, adds miles and wears. In insurance it explains why a standard auto policy pays far less for a totaled five-year-old car than the price of a new one: the settlement is based on actual cash value, which reflects depreciation.

New cars lose value fastest in their first years, and the pace slows after that. Above-average mileage, damage history and poor condition add to it; desirable options, low mileage and strong used-car demand offset it. Insurers do not usually apply a fixed depreciation schedule to cars. Their valuation reports use recent local sales of comparable vehicles, which already reflect market depreciation. On a partial claim, depreciation can also appear as a betterment deduction for worn parts such as tires.

The gap between a depreciated value and what you owe, or what a new car costs, is the reason for two common optional coverages. gap insurance pays the difference between the actual cash value and your loan or lease balance. new car replacement pays to replace a recently purchased car with a new one of the same make and model instead of paying the depreciated value. Both have eligibility limits, usually tied to the car's age or mileage.

Last reviewed October 4, 2026

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Related terms

Actual cash value What a car was worth just before a loss — replacement cost minus depreciation — and the basis of most total-loss payouts. Betterment A deduction an insurer takes when a repair replaces a worn part with a new one, leaving the car in better condition than before the loss. Total loss A car so badly damaged that repairs would cost more than it is worth, or more than a state threshold, so the insurer pays its value instead. Gap insurance Pays the difference between a totaled car's actual cash value and the larger balance still owed on its loan or lease. New car replacement Optional coverage that pays for a brand-new car of the same make and model if a recent car is totaled, instead of its depreciated value. Replacement cost What it would cost to replace damaged property with new property of like kind and quality, with no deduction for depreciation.

Related guides

Classic and collector car insurance How classic car policies differ from regular auto insurance, what agreed value means, who qualifies, and the usage and storage rules to expect. Gap insurance explained Gap insurance pays the difference between your car's value and what you owe if it's totaled or stolen. Who needs it, where to buy it, what it skips. How insurers calculate actual cash value How insurers value a totaled or stolen car from comparable vehicles, adjust for mileage, options and condition, and add taxes and fees. New car replacement coverage New car replacement pays for a brand-new car of the same make and model if yours is totaled, not its depreciated value. Rules, limits, alternatives.

Related tools

Gap insurance calculator Chart your loan balance against the car's falling value to see how long you would owe more than it is worth — the window gap insurance covers.