The True Cost of Owning a Car: Per Year, Per Month, and Per Mile

Depreciation: The Biggest Cost

New cars typically lose roughly 15% to 20% of their value in the first year and about 10% to 15% a year after, reaching perhaps 40% to 50% of their original price after five years. If the $35,000 car is worth $17,500 after five years, it has lost $17,500, or $3,500 a year. Used vehicles depreciate more slowly in absolute terms, which is one reason a two- or three-year-old car is often a better value.

Depreciation is not a cash outflow until you sell, but it is real, and it is often the largest single cost.

Financing, Fuel, Insurance, and Maintenance

Financing: a $30,000 loan (after a $5,000 down payment) at 7% over 60 months costs $594 a month and $5,642 in interest, about $1,128 a year. Fuel: 12,000 miles at 30 mpg is 400 gallons; at $3.50 per gallon, $1,400 a year. Insurance varies widely, around $1,500 to $2,500 for many drivers; assume $1,800. Maintenance and repairs: $800 a year on average for a newer vehicle, rising with age. Registration, taxes, and inspections: perhaps $400 a year, and parking and tolls are extra.

Adding up: depreciation $3,500, financing $1,128, fuel $1,400, insurance $1,800, maintenance $800, fees $400. Total = $9,028 a year, or about $752 a month.

Cost Per Mile and Why It Matters

Dividing by miles driven gives $9,028 ÷ 12,000 = $0.75 per mile. This is a more useful figure than the loan payment when comparing options. A cheaper car that uses more fuel or needs more repairs may cost more per mile. Cost per mile also helps compare owning a car with using ride services, public transit, or car sharing for low-mileage drivers: if you drive 5,000 miles a year, the fixed costs are spread over fewer miles and your cost per mile rises sharply.

For tax purposes, official mileage rates reflect average operating costs and are one benchmark for the cost of business driving.

Ways to Lower the Cost

Buy a reliable used car that has already taken its steepest depreciation, keep it longer (costs per year fall as depreciation slows, until repair costs rise), make a larger down payment or choose a shorter loan to reduce interest, shop for insurance annually, maintain the car on schedule to avoid bigger repairs, and combine trips to save fuel. Compare total five-year costs, not just prices.

Using the Total to Set a Budget

Many financial planners suggest keeping total transportation costs under 10% to 15% of gross income. On an income of $70,000, that is $7,000 to $10,500 a year. The $9,028 car above would sit at 13%, near the upper end of that range. If you also pay for parking and tolls, you might choose a less expensive vehicle.