Ask most buyers what their car costs and they will tell you the monthly payment. Ask what it actually costs to own, and the number is far larger — industry studies put the all-in figure for a new car near $12,000 a year, about $1,000 a month. The biggest slice of that isn't fuel, insurance, or repairs. It's depreciation: the value the car silently sheds as it ages, recently pegged at roughly $4,334 a year on the average vehicle. And unlike every other cost, no one ever sends you the bill.
The biggest cost hides in plain sight
Depreciation, insurance, and fuel together make up roughly two-thirds of what a car costs to own, and depreciation usually leads the three. The reason it gets ignored is psychological: you pay insurance, fuel, and maintenance in real transactions you can see, but depreciation accrues quietly and only lands once — when you sell or trade in and discover the car is worth thousands less than you remember paying.
The curve is steepest at the start
Depreciation is front-loaded. A new car commonly loses 15–20% of its value in the first year alone, and roughly 40–60% over five years. The painful irony is that the buyers who trade in every two or three years — chasing the new-car feeling — are the ones who absorb the steepest part of the curve over and over. Keeping a car longer spreads that early drop across more years of use, which is one of the most reliable ways to lower your cost per year.
Why two $35,000 cars can cost thousands apart
Resale value varies enormously between models, so two cars that sticker for the same amount can diverge by thousands of dollars after five years. A model that holds 55% of its value is a fundamentally cheaper car to own than one that holds 40%, even if you paid exactly the same and drove them identically. This is the gap an average can never show you — and it is why a higher-priced car that holds value can quietly be the cheaper choice than a bargain that doesn't.
It is also why MotiveGrid refuses to estimate depreciation. Because getting it wrong can distort a car's true cost by 30% or more, every retention figure comes from real resale data (CarEdge), not a rule of thumb. That feeds directly into the five-year cost of ownership shown on each vehicle — the number that actually lets you compare two cars honestly.
What to do about it
- Choose for resale value, not just price. It is the single biggest lever you have on total cost — bigger than any fuel or insurance saving.
- Keep the car longer. Spreading the steep early depreciation across more years lowers your cost per year.
- Compare five-year cost, not the sticker. Line up contenders on what they cost to own, not what they cost to buy.
For the full breakdown of every ownership cost and how they fit together, see our cost of ownership guide; to find the models that come out ahead, start with the cheapest cars to own ranking, then compare any two side by side.