Ownership Cost Calculator

By Morgan T. Ellsford

Educational estimate tool. Uses your own assumptions rather than live market feeds.

This calculator estimates the total cost of owning a vehicle over your planned holding period. It combines purchase and financing, fuel, insurance, maintenance, repairs, tires, registration, and expected resale value so you can see the bigger picture.

How to use it: Enter realistic assumptions, not best-case guesses. The results are only as useful as the inputs.

Purchase and Financing

Purchase price Sales tax, dealer fees, registration at purchase Down payment / trade equity applied Loan APR (%) Loan term (months) Planned ownership period (months) Expected resale / remaining value at end

Usage and Running Costs

Miles driven per year Fuel economy (MPG) Fuel price per gallon Insurance per year Maintenance per year Repairs per year Tires / alignment / tire-related annual average Registration / inspection / annual fees

Results

Total ownership cost

Average monthly cost

Average annual cost

Estimated cost per mile

What this means: This result is meant to help you compare ownership scenarios, not predict every real-world variable. Use the same assumptions structure when comparing two vehicles.

What’s included in the calculation

Net financed amount after down payment
Loan interest over your ownership period
Fuel cost based on annual miles, MPG, and gas price
Insurance, maintenance, repairs, tires, and annual fees
Resale value subtracted at the end of the ownership period

What this calculator is best for

Comparing two vehicles before buying
Checking whether a lower monthly payment is really cheaper
Comparing used vs newer vehicles on full ownership cost
Adding repair exposure into your ownership planning

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Notes and limitations

This tool does not use live insurance, fuel, tax, or financing feeds.
Depreciation is represented through your resale-value estimate.
Repair costs are averaged; real-world repair timing is uneven.
Use realistic assumptions rather than optimistic ones.