When you buy a car, the sticker price feels like “the number that matters.” You negotiate, maybe knock it down a bit, sign the paperwork, and figure you now know what your car costs. But that price is just the starting point of an expense that keeps running, month after month, for as long as the car sits in your driveway.
The truth is a car generates ongoing costs — some visible, like gas, and some nearly invisible, like depreciation — that together usually add up to far more than most people expect at the time of purchase. Understanding these costs helps you compare models fairly, decide between an EV and a gas car, and figure out what every mile you drive actually costs you.
Depreciation: the biggest, least visible cost
Depreciation is the loss in your car’s value over time, and for most drivers it’s by far the largest cost of car ownership — even though it never shows up on a receipt. A typical new car loses 15% to 20% of its value in the first year alone, and keeps losing value every year after that, just at a slower pace. It’s money that disappears even though you never see it leave your account.
Fuel or energy
Whether it’s gasoline or electricity to charge an EV, this is the cost you feel most day-to-day because you pay it in the moment. It depends on your car’s efficiency, how much you drive, and local fuel or electricity prices, but it’s a guaranteed recurring cost for as long as you drive the car.
Insurance
Insurance varies based on the car’s value, your driving record, your age, where you live, and the coverage you choose. It’s easy to underestimate when buying, since it’s not part of the sticker price, but it’s a fixed monthly cost from day one.
Maintenance and repairs
Oil changes, tires, brakes, batteries, and repairs that pop up as the car wears with use. New cars tend to cost less to maintain in the first few years (and sometimes come with a warranty), but this cost climbs as the car ages and racks up mileage.
Registration and taxes
Most places charge an annual or periodic registration fee, and some add a tax based on the vehicle’s value. It’s not the biggest line item on this list, but it’s a recurring cost that’s easy to forget when budgeting.
Financing interest
If you financed the car, every payment includes an interest portion on top of the principal. The longer the loan term, the more interest you end up paying overall — even though the monthly payment looks lighter.
Cost per mile: the honest way to compare
Add up all of these costs — depreciation, fuel, insurance, maintenance, registration, and interest — and divide by the miles you drive in a year, and you get your car’s cost per mile. This number is far more honest than the sticker price because it captures the real cost of use, and it lets you fairly compare, say, a gas car against an EV, which have very different cost structures (EVs tend to cost less to fuel and maintain, but sometimes more to buy).
A worked example with round numbers
Let’s look at a $30,000 car, driven about 12,000 miles a year.
- Year 1 depreciation (15%): ~$4,500
- Fuel (gasoline, moderate use): ~$1,800/year
- Insurance: ~$1,200/year
- Maintenance and repairs: ~$700/year
- Registration and taxes: ~$300/year
- Financing interest (estimated): ~$1,000/year
In just the first year, this car could cost you around $9,500, not counting the principal portion of the loan payment. Divided across 12,000 miles, that’s roughly $0.79 per mile — well above what most people picture when they think “what does my car cost.” These are approximate figures meant to show the scale involved; your actual numbers depend on the model, how you drive, and where you live. If you’re weighing an EV against a gas car, the EV vs. gas calculator can help you compare the total cost of each option for your situation.
FAQ
Do all cars depreciate at the same rate? No. Some brands and models hold their value far better than others. Luxury and niche vehicles tend to depreciate faster; certain popular, reliable models depreciate more slowly.
Is an EV always cheaper to maintain? Generally yes, since it has fewer moving parts and doesn’t need oil changes, but the total cost depends on the purchase price, local electricity costs, and battery lifespan.
Does buying used avoid depreciation? It reduces it, since the original owner already absorbed the steepest first-year drop, but a used car still depreciates — just at a slower pace.
Is it worth paying cash to avoid interest? It depends on your overall financial picture — what you’d give up by using that cash elsewhere versus the interest you’d pay — but yes, avoiding interest lowers the total cost of the car.
Does cost per mile help compare owning a car against other transportation options? Yes, that’s one of its advantages: it lets you compare car ownership more fairly against renting, public transit, or ride-hailing.
Bottom line
The sticker price is just the first number on a much longer list. Depreciation, fuel, insurance, maintenance, registration, and interest all add up to the true cost of owning a car, and cost per mile is the clearest way to see it. Knowing these numbers upfront helps you choose the car — and the way you pay for it — that actually makes sense for you.
This article is for informational purposes only and does not constitute financial advice. Percentages and amounts are general estimates; consult a qualified professional before making decisions about your specific situation.