PetrolCalculator

Car ownership calculator

Car Depreciation Calculator

Estimate vehicle value loss from the purchase price, current or expected value and ownership period you enter.

Estimate ownership costs

Enter purchase and current or expected values to estimate value change.

What your result means

The result is the value change between the purchase price and the current or expected value over the period entered. Resale values can vary materially with vehicle, age, mileage, condition and market conditions.

Worked example

A car bought for £25,000 and valued at £17,000 after two years:

Value loss
£8,000.00
Average per year
£4,000.00

This is an input-led value comparison, not a claimed universal depreciation rate.

Formula

Purchase price−Current or expected value\text{Purchase price}-\text{Current or expected value}

Example value-loss breakdown

Purchase priceValue after 2 yearsValue change
£25,000£17,000£8,000.00

Assumptions and limitations

  • This simple model uses the values and period you enter; it does not predict future resale value.
  • A value higher than purchase price is shown as appreciation rather than being silently rejected.

Helpful questions

Why can real depreciation differ?

Mileage, condition, specification, supply, demand and wider market conditions can all affect resale value.

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