Vehicle Cost Calculator
The true cost of owning a vehicle is far more than fuel. Insurance, maintenance, registration, financing interest, and depreciation all add up, and depreciation alone is often the largest hidden cost. This calculator sums your own figures into a total annual cost and a cost per mile, so you can compare vehicles honestly and decide whether a trip is worth it. Every figure is a user-editable input because prices vary enormously by location, vehicle and driver; enter your real numbers from receipts and statements for an accurate result.
Vehicle cost formula
Fuel cost = (annual miles / mpg) x fuel price
Total annual cost = fuel + insurance + maintenance + registration + financing + depreciation
Cost per mile = total annual cost / annual miles
Cost per month = total annual cost / 12
This is straightforward arithmetic: every cost is summed and then divided by miles or months. The result is only as good as your inputs, so use real figures from your own records.
True cost of ownership context
- Depreciation is typically the largest single cost in a vehicle's early years.
- Fuel-only thinking understates the real cost per mile by a wide margin.
- The U.S. Department of Energy publishes fuel economy figures for specific models.
- The U.S. Energy Information Administration publishes current average fuel prices by region.
- Electric vehicles replace fuel cost with charging cost; enter your cost per charge as the fuel figure if applicable.
Vehicle cost: frequently asked questions
What is the true cost of owning a car?
The true cost of car ownership is the sum of all yearly expenses: fuel or charging, insurance, maintenance and repairs, registration and taxes, financing interest, and depreciation (the value the car loses each year). Adding these gives a far higher figure than fuel alone, and dividing by miles driven gives a realistic cost per mile.
How is fuel cost per year calculated?
Annual fuel cost equals annual miles divided by fuel economy in miles per gallon, multiplied by the fuel price per gallon. For example, 12,000 miles at 30 mpg is 400 gallons; at US$3.50 per gallon that is US$1,400 per year. Enter your own price and economy because they vary by location and vehicle.
What is depreciation and why include it?
Depreciation is the value your vehicle loses over time. It is usually the single largest cost of ownership in the early years, yet it is invisible because no bill arrives for it. Including an annual depreciation figure gives a complete and honest picture of what the car costs you each year.
How do I find cost per mile?
Cost per mile is total annual cost divided by annual miles driven. It lets you compare vehicles on equal terms and decide whether a particular trip is worth taking. A cost per mile that includes depreciation and insurance is much higher than the fuel-only figure many drivers assume.
Why are all the figures editable inputs?
Fuel prices, insurance premiums, maintenance, depreciation and mileage vary enormously by location, vehicle, driver and year. Rather than guess a national average, this calculator lets you enter your own real figures so the result reflects your actual situation. Use your insurance statement, fuel receipts and service records for accuracy.
Official sources
- U.S. Department of Energy and EPA: FuelEconomy.gov vehicle fuel economy.
- U.S. Energy Information Administration: Gasoline and Diesel Fuel Update.
Reviewed by the CalculatorHub team, edited by James Graham, 16 June 2026. See our methodology.