Cost of Owning a Car Calculator
The sticker price is the smallest part of what a car costs you. Depreciation, financing, fuel, insurance and maintenance usually add up to more than the purchase price itself over five years. Fill in what you know below — the defaults are typical figures, so you can change one number at a time and watch the total move.
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What actually goes into the cost of owning a car
Ownership cost splits into two halves that behave very differently. Fixed costs — depreciation, financing, insurance, registration — you pay whether the car moves or not. Running costs — fuel, tyres, servicing, repairs — scale with how far you drive. People who drive very little are often surprised that halving their mileage barely dents the total, because the fixed half dominates.
Depreciation is usually the biggest line
A new car typically loses somewhere around a fifth of its value in the first year, then a slower slice of the remaining value each year after that. The exact curve varies enormously by model, and that variation is the single largest controllable factor in your total. Two cars with the same price and the same fuel economy can differ by five figures over five years purely on how well they hold their value.
This is also why buying a two or three year old car changes the arithmetic so much: the first owner has already absorbed the steepest part of the curve. Set the purchase price lower and bring the first-year depreciation figure down to roughly the same value as the later years, and you will see the effect.
Financing is a real cost, not a payment plan
The monthly payment tells you about your cash flow, not about what the car costs. What the loan costs you is the interest, and that is driven by the APR and the term together. Stretching a loan from five years to seven lowers the payment and raises the total — and it keeps you in negative equity for longer, meaning the car is worth less than you still owe on it.
Insurance and repairs
Insurance depends on the driver at least as much as on the car, so use your own quoted premium rather than a national average if you have one. Repairs are the line most people underestimate: the first few years are usually covered by warranty and cost close to nothing, and then the average climbs steadily. If you plan to keep a car past its warranty, budget for that rise rather than assuming the early years continue.
How to use the result
The per-month figure is the one worth remembering, because it is directly comparable to the payment a dealer quotes you. If the quoted payment is 450 a month and this calculator says the car costs 780 a month to own, the gap is what the payment was hiding.
The per-mile figure is the one to use when deciding whether a given trip is worth driving, or when comparing against transit, cycling or a car subscription.
Frequently asked questions
What does the average car cost per year to own?
Studies of average ownership costs generally land in the region of nine to twelve thousand dollars a year for a new car in the United States, once depreciation, financing, fuel, insurance, maintenance and taxes are all counted. The spread around that average is very wide, which is why running your own numbers is more useful than any average.
Is it cheaper to buy a used car?
Almost always, yes, on total cost. A used car has already taken its steepest depreciation, and its lower purchase price drags down financing and insurance costs too. The trade-off is higher repair risk and no warranty, so raise the repairs figure when you model one.
Should I include the down payment in the total?
The down payment is not a cost in itself. It is money moved from your bank account into the car, and you get part of it back at resale. What it does affect is how much you borrow, and therefore how much interest you pay. This calculator handles it that way: a bigger down payment reduces the interest line rather than adding to the total.
Why is the resale value only an estimate?
Resale depends on the specific model, trim, condition, mileage and the state of the used market on the day you sell. The calculator applies a straightforward depreciation curve that you can adjust. For a real figure, look up recent sold prices for the same model at the age you plan to sell it.