Total Car Ownership Cost Calculator

The sticker price of a car is only the beginning. Total Cost of Ownership (TCO) adds every dollar you’ll spend over your ownership period — and the results are often eye-opening. A cheaper car can easily cost more to own than a more expensive one.

Formula: TCO = Depreciation Loss + Financing Cost + Insurance + Fuel + Maintenance + Registration

Count depreciation or the purchase price, never both. Depreciation is defined as purchase price minus resale value, so it already contains the part of the sticker price you never get back. Adding the full purchase price on top of it double-counts the car itself, which on a $35,000 vehicle inflates the answer by $35,000. Written the other way round it comes to the same thing:

TCO = Purchase Price − Resale Value + Financing Cost + Insurance + Fuel + Maintenance + Registration

What this calculator computes: the cash-outlay version, purchase price plus fuel, insurance and maintenance over your ownership period. It does not ask for a resale value, financing interest or registration, so treat its answer as total money spent rather than true cost of ownership. Subtract whatever you expect the car to be worth when you sell it, and add your loan interest, to get the real figure.

Annual TCO: Annual TCO = TCO ÷ Years of Ownership

Cost per mile: Cost per Mile = Annual TCO ÷ Annual Miles Driven

What each variable means:

• Financing Cost: total interest paid over the loan term (use the amortization formula or loan calculator).
• Depreciation Loss: Purchase Price − Estimated Resale Value. New cars lose 15–25% of value in year one alone.
• Fuel Cost: (Annual Miles ÷ MPG, miles per gallon) × Price per Gallon.
• Maintenance: oil changes, tires, brakes, scheduled services. Budget $1,000–$2,500/year for most vehicles.
• Insurance: varies hugely by driver age, location, and vehicle type.

Worked example: $35,000 car, financed over 5 years at 6% APR, driven 12,000 miles/year.

• Financing cost: ~$5,600 total interest
• Depreciation: $35,000 − $18,000 resale = $17,000 over 5 years
• Fuel (28 MPG, $3.50/gal): $1,500/year × 5 = $7,500
• Insurance: $1,800/year × 5 = $9,000
• Maintenance: $1,200/year × 5 = $6,000

5-Year TCO = $17,000 + $5,600 + $7,500 + $9,000 + $6,000 = $45,100 Cost per mile = $45,100 ÷ 60,000 = $0.75/mile

Note that the $35,000 sticker price does not appear in that sum. It is already inside the $17,000 depreciation line. Depreciation is the single biggest item here, larger than fuel and maintenance combined, which is why buying a car that holds its value matters more than almost any other decision you make about it.

Typical range: $0.60–$1.50 per mile depending on vehicle class.