Tool · Investor Sam Auto

5-Year True Cost of Car Ownership Calculator

June 30, 2026 • By the Investor Sam Editorial Team • Reviewed by Berly Sam Varghese, Editor
The price on the window is only the down payment on what a car actually costs. This calculator estimates the true five-year cost of ownership by combining depreciation (price minus resale value) with five years of fuel, insurance, maintenance, and registration. The result is the number that should drive a buying decision, because two cars with the same sticker can differ by thousands once resale value and running costs are counted.

Example: Purchase price: 35000 $ · Resale value after 5 years: 16000 $ · Miles driven per year: 12000 mi · Fuel economy: 28 mpg · Gas price: 3.5 $/gal · Annual insurance: 1600 $ · Annual maintenance & repairs: 900 $ · Registration & fees per year: 300 $

5-year total cost$40,500
Depreciation$19,000
Fuel (5 years)$7,500
Average cost per year$8,100

Worked example

A $35,000 car worth $16,000 in five years loses $19,000 to depreciation. Fuel at 28 MPG for 12,000 miles a year at $3.50 costs about $1,500 a year, or $7,500 over five years. Insurance ($8,000), maintenance ($4,500), and fees ($1,500) add up over the period. Total: about $40,500 over five years, or roughly $8,100 a year. Depreciation alone is nearly half the cost, which is why resale value deserves as much attention as the sticker.

Frequently asked questions

Why is depreciation usually the biggest cost?

For most cars in the first five years, the value lost to depreciation exceeds fuel and maintenance combined. That is why choosing a model that holds its value can save more than any fuel-economy gain, and why the resale-value input matters most.

Where do I get a five-year resale estimate?

Vehicle pricing guides and residual-value data publish projected values by model and trim. A rough shortcut is to apply an annual depreciation rate; a separate depreciation calculator can produce the five-year figure to plug in here.

Does this include loan interest?

No. This tool measures ownership and operating costs. If you finance, add the total interest from an auto-loan calculator to get the complete out-of-pocket cost of the car.

How can I use this to compare two cars?

Run it once for each vehicle with its own price, resale value, MPG, and insurance quote. The car with the lower five-year total is cheaper to own even if its sticker price is higher, which is often the case for value-holding models.

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Sources

Berly Sam Varghese · Editor, Investor Sam

Berly Sam Varghese is an engineer who treats money the way he treats any hard problem — something to be engineered, not gambled on. He funded years of education and built real financial stability the patient way, by living below his means and investing rather than borrowing. He writes for the person trying to make a car decision without overpaying for years. He reviews and approves every article on Investor Sam and checks the figures against primary sources before anything is published. More about our standards.