True Cost per Kilometre of a Car

All costs included, what every kilometre really costs you — useful for expense claims and comparisons.

Formula

Total cost over the period = Depreciation + Interest cost + Fuel / energy + Insurance + Maintenance

Assumptions

Constant annual depreciation and insurance/maintenance costs as you entered them: an order of magnitude, not a quote. It does not replace real market values or local prices.

How to read it

This is the reference number for expense claims or for choosing between car and train: official mileage rates for an average car sit around 0.50–0.70 per km (or ~0.65 USD per mile in the US), consistent with this calculation.

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