Car Ownership Cost Calculator
Estimate ownership cost including purchase less resale, financing interest and entered annual running budgets.
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Result
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Calculation steps
Work through one step at a time or reveal the complete calculation. The steps use your current inputs.
How to calculate
Separate capital cost net of expected resale from annual operating budgets and avoid counting loan principal twice.
Horizon cost=purchase−resale+total interest+years×(annual budgets+annual distance×energy cost/distance)
Worked example
Purchase of 25000, resale of 12000 after 5 years, total interest of 1000, annual non-energy budgets of 2000 and energy of 1200/year give a total cost of 30000: 6000/year or 0.50/km at 12000 km/year.
Assumptions and input details
All money shares the same entered currency. Purchase includes acquisition fees once; financing input is interest only, excluding principal already included in purchase price. Resale and annual budgets are entered future assumptions, not fetched valuations or local taxes. Average monthly cost is an annualized budget, not a loan payment. Opportunity cost, inflation and unexpected repairs outside the entered budget are not automatically added.
References: US DOE: comparing vehicle ownership costs
Unit definitions
Unit selection is independent of language. Each selector contains only units for its physical quantity. Calculations use defined base units internally.
Choose from 23 length definitions, including explicitly labelled regional measures. Area conversions square the length factor; geometric volumes cube it.
Regional measures are not interchangeable merely because their names look similar. This is a documented selection, not a claim to include every historical unit.
NIST measurement tables · Japanese traditional units · Mainland China and Hong Kong unit distinctions
Using this calculator
Can I enter my own problem?
Yes. Replace the example values with your own inputs. The result, calculation steps, tables and applicable diagrams update from those inputs. Blank or invalid values clear the result; example values are never silently substituted for missing inputs.
Are the results exact?
Results use floating-point arithmetic and displayed rounding. Read the formula, assumptions and any stated data precision before interpreting the result.
Is my input uploaded?
The calculation runs in your browser. No account, file upload or external AI service is required. Inputs are not saved between page reloads.
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