Free Online Vehicle Depreciation Calculator
Estimate a car value after years of depreciation.
Year-by-year value
| Year | Base value | Mileage adj. | Adjusted value | Depreciation |
|---|---|---|---|---|
| Enter values to build the table. | ||||
Declining balance applies the rate to the remaining value each year, so early years lose more. Straight line subtracts the same percentage of the purchase price every year. Mileage adjustment is a simple estimate, not a substitute for a professional appraisal.
About the Vehicle Depreciation Calculator
Depreciation is often the largest cost of owning a car, yet it is invisible because no invoice arrives each month. This calculator estimates what a vehicle is worth after a given number of years by applying either a declining-balance or a straight-line rate, then adjusting for mileage above or below the typical annual distance. It shows the current value, the total loss, the percentage retained and a year-by-year table that makes the curve easy to see.
Declining balance versus straight line
Declining balance multiplies the remaining value by the annual rate each year. A vehicle worth 30,000 at 15 percent loses 4,500 in the first year, then 15 percent of 25,500 in the second year, and so on. The absolute loss shrinks over time even though the percentage stays constant. Straight line instead subtracts the same percentage of the original purchase price every year, so the annual loss is level until the value reaches zero. Real vehicles behave closer to declining balance in the first years and flatten later, which is why the declining method is usually a better planning default.
Why mileage matters
Two cars of the same age can have very different values if one has covered 40,000 miles and the other 120,000. The planner compares actual mileage with an expected figure based on age and average annual distance, then applies a penalty per 1,000 units of excess. You can set the penalty to zero if mileage is typical or if you only want an age-based estimate. The adjustment is applied progressively in the yearly table, assuming mileage accumulates evenly over the vehicle's life.
Reading the results
The highlighted current value is the purchase price after both age-based depreciation and the mileage adjustment, floored at zero. Total depreciation is the difference between the purchase price and that value, while value retained expresses the same result as a percentage. Average per year helps compare a three-year and a seven-year ownership period. The annual depreciation card shows the loss during the most recent year at the selected rate, which is useful for budgeting a replacement.
What the estimate cannot capture
Depreciation varies by make, model, trim, fuel type, accident history, service records, local demand, season and condition. Some enthusiast vehicles appreciate; some electric models have seen unusually steep declines. This calculator uses a single rate and a single mileage penalty, so it cannot capture model-specific curves or market shocks. Use it to understand the shape of depreciation and to compare scenarios, then check live listings, trade-in quotes and appraisal services before making a financial decision.
Frequently asked questions
What rate should I use?
A common planning range is 10 to 20 percent per year for a new car, with the steepest loss in the first two or three years. Luxury and high-tech vehicles often depreciate faster, while some trucks and reliable economy models hold value better. Use a rate that matches local market data for the specific model.
Does the table include the mileage penalty every year?
Yes. The planner estimates mileage at each year in proportion to the current total, compares it with the expected average, and applies the penalty. The final row at the current age reconciles with the highlighted current value.
Is this the same as a trade-in offer?
No. A dealer trade-in offer reflects wholesale auction values, reconditioning costs and profit margin, so it is usually lower than a private-party value. Use the estimate as a starting point and obtain several quotes.