The True Cost of Owning a Car

By Muhammad Asad · Last updated: 2026-10-01

Your car payment is the cost you budget for. It isn't the biggest one. AAA's 2025 Your Driving Costs study puts the average new vehicle at $11,577 a year — 77 cents per mile at 15,000 miles — and the single largest slice is depreciation, a cost that never shows up on a bill. Here's the full stack, category by category.

The full cost stack (AAA 2025 figures)

AAA models five years and 75,000 miles of ownership across nine vehicle categories, using a sales-weighted average price of $38,938. Their 2025 breakdown:

Depreciation: $4,334/year — the value the car loses. Largest cost, invisible on any bill.
Fuel: 13.00¢/mile — about $1,950 a year at 15,000 miles, assuming roughly $3.15/gallon gasoline.
Insurance: $1,694/year — varies hugely by driver, car, and state; get your own quote.
Maintenance, repair, and tires: 11.04¢/mile — roughly $1,656 a year at 15,000 miles.
License, registration, and taxes: $813/year.
Finance charges: $1,131/year — the interest on the loan, down from $1,332 the year before.

Depreciation alone ($4,334) exceeds insurance, registration, and finance charges combined. (AAA's newest 2026 release puts the headline number at $12,863 a year, but the study changed its vehicle mix, so the two years aren't directly comparable.)

Depreciation: the cost you never see

Depreciation is real money leaving your net worth — you just don't feel it until you sell or trade in. New cars lose value fastest in their first couple of years, which is why a one- or two-year-old car can cost so much less than the same model new: the first owner absorbed the steepest part of the curve.

This is also what makes long loans dangerous. If your loan pays down slower than the car depreciates, you end up underwater — owing more than the car is worth — and that gap comes out of your pocket if you sell or the car is totaled. A solid down payment is the main defense: it starts you with equity instead of a hole.

Financing: what the loan really adds

The loan is the one cost you control most directly on day one. Take a $35,000 new car with $5,000 down, 6% sales tax ($2,100), and $500 in fees. The tax applies to the price, so you finance $32,600. At 7% for 60 months:

Monthly payment: $645.52
Total interest: $6,131.14
That interest is the price of not paying cash — about $1,226 a year of your ownership cost.

Compare a used alternative: a $22,000 car with $2,000 down, 6% tax ($1,320), and $300 in fees means financing $21,620. At 8.5% for 60 months the payment is $443.57 with $4,994.04 in total interest — and the cheaper car also depreciates, insures, and registers for less. Run both scenarios in our car payment calculator before you decide; the payment is what dealers quote, but total interest is what you pay.

Fuel: do your own mileage math

AAA's 13.00¢-per-mile figure is a national average — yours depends on your car's fuel economy, local gas prices, and how much you drive. The honest way to estimate it: take your annual miles, divide by the car's MPG, and multiply by your local price per gallon. A 25-MPG car driven 15,000 miles at $3.50/gallon costs $2,100 a year in fuel; a 35-MPG car costs $1,500. That $600 annual gap is worth real money when you're choosing between two cars.

Insurance and maintenance: quotes, not guesses

Insurance is the most personal cost on the list — AAA's $1,694 is an average for a typical driver, but your rate depends on your age, driving record, location, and the specific car. Get quotes before you buy: the same driver can see wildly different premiums on two cars with similar prices, and that difference belongs in your comparison.

Maintenance and repairs (11.04¢/mile in the AAA study, including tires) climb as cars age. Budget more for a used car with 80,000 miles than a new one — and get a pre-purchase inspection, which is the cheapest money you'll ever spend on a used car. These are the categories where "get your own numbers" isn't optional advice; national averages genuinely can't tell you what your car will cost you.

The 20/4/10 rule of thumb

Financial planners often cite a simple guardrail for car buying — 20/4/10 — and every part of it maps to a cost category above:

20% down. Shrinks what you finance (lower finance charges), starts you with equity (blunts depreciation risk), and keeps you from going underwater.
4-year term max. A 48-month loan keeps total interest low and means you own the car free and clear before repair costs typically climb.
10% of gross income. Your total monthly vehicle costs — payment, insurance, fuel — shouldn't exceed about a tenth of your gross monthly income.

It's a rule of thumb, not a law: in expensive cities or on modest incomes, 10% can be genuinely hard to hit, and that's useful information too — it tells you the car is stretching you. But as a quick sanity check before you sign, it catches the most common mistake in car buying: shopping by monthly payment alone while ignoring everything else on the cost stack.

Putting it together: your personal total

Build your own annual number with this formula:

Annual cost = (monthly payment × 12) + insurance quote + annual fuel + maintenance budget + registration/taxes

Then benchmark it against AAA's $11,577. Well under? You're doing fine. Well over? Find the category driving it — it's usually depreciation (too much car), insurance (too little shopping), or fuel (too many miles in too thirsty a car). And don't forget the costs AAA doesn't count: parking, tolls, tickets, and car washes all come out of the same wallet.

Assumptions and limits

Loan examples on this page use the standard amortization formula with the stated rates and terms, for tax year 2026. Non-loan figures are from AAA's 2025 Your Driving Costs study, which models an average new vehicle over five years and 75,000 miles — actual costs vary widely by vehicle, location, driving habits, and driver profile. Figures are estimates for planning, not financial advice.

Frequently asked questions

What is the biggest cost of owning a car?

Depreciation — the value your car loses — not the payment. AAA's 2025 Your Driving Costs study puts average depreciation at $4,334 a year, more than insurance, registration, and finance charges combined. It's the largest cost and the one nobody writes a monthly check for, which is why it's so easy to ignore.

How much does it cost to own a car per year?

AAA's 2025 study found owning and operating an average new vehicle costs $11,577 a year — about 77 cents per mile at 15,000 miles a year. Your number will differ based on the car's price, your insurance rates, local fuel prices, and how much you drive, but the AAA figure is the best national benchmark available.

Is it cheaper to buy a used car?

Almost always, on total cost. A used car costs less to buy, loses value more slowly, and usually carries lower insurance and registration costs. The trade-off is higher repair risk — have any used car inspected before buying, and budget more for maintenance than you would on a new one.

Does a bigger down payment lower the true cost of owning a car?

Yes. A bigger down payment shrinks the amount you finance, which cuts both your monthly payment and your total interest — and it protects you from owing more than the car is worth. It doesn't change depreciation, insurance, or fuel, but financing is the one cost category you can shrink on day one.

How do I estimate my own total cost of ownership?

Add up: annual loan payments + your actual insurance quote + estimated fuel (miles you'll drive × your car's cost per mile) + a maintenance budget + registration and taxes. Then compare against the AAA benchmark of $11,577 a year for an average new car — if you're far above it, one of those categories deserves a second look.

Do electric cars cost less to own?

AAA's newest analysis found EVs have the lowest fuel costs — charging runs roughly two-thirds cheaper than gasoline per mile — but higher purchase prices push up depreciation, finance charges, and taxes. Hybrids came out as the most consistently lower-cost alternative across vehicle categories. The right answer depends on the specific models you're comparing.

Is paying cash for a car better than financing?

Paying cash eliminates finance charges entirely — AAA measured those at $1,131 a year for the average new car in 2025. But it also ties up a large amount of cash. If the loan rate is low and you'd otherwise keep that cash in an emergency fund or earning investments, financing can be the rational choice. Compare the total interest against what the cash would do elsewhere.