Depreciation is usually the single biggest cost of owning a car — often larger than fuel, insurance, or maintenance combined, yet it's the one cost that never shows up as a line-item charge. It just quietly shows up as a gap between what you paid and what the car is worth whenever you go to sell or trade it in.
Why does year one hurt the most?
The moment a car is titled and driven off the lot, it legally and practically becomes "used," even if it has ten miles on the odometer. On top of that, manufacturers typically refresh or replace model years annually, which makes last year's version look instantly dated to buyers browsing new-car lots. Both effects hit hardest in that first twelve months, which is why the drop from "new" to "one year old" is so much steeper than any later single-year drop.
How does the curve flatten out after year one?
This is the part people often get wrong when eyeballing a car's worth: depreciation is not a straight line. A simple "10% a year" mental model understates how much is lost early and overstates how much is lost late. A more realistic pattern compounds a percentage loss each year, so the dollar amount lost shrinks even as the percentage rate declines only gradually. Here's an illustrative (not exact) shape of that curve for a typical sedan:
| Age | Value remaining | Cumulative loss |
|---|---|---|
| New | 100% | 0% |
| 1 year | ~75% | ~25% |
| 3 years | ~55% | ~45% |
| 5 years | ~40% | ~60% |
| 10 years | ~25% | ~75% |
Those figures are a modeled example, not a promise for any specific make or model. Mileage, condition, accident history, trim popularity, and local demand all shift the real number up or down from a general curve like this.
Does the type of vehicle change the curve?
Trucks, SUVs, and pickups benefit from steadier demand in the used-vehicle market, which tends to slow their depreciation a few percentage points a year compared to sedans and hatchbacks — a gap that compounds noticeably by year five or ten. Luxury and performance vehicles usually move the opposite direction: high original prices, more expensive upkeep, and a smaller pool of used-luxury shoppers all push their curves down faster than the mainstream average.
A worked example (hypothetical numbers)
Say, purely as an illustration, someone bought a mid-size sedan for $35,000 new, and it's now 5 years old. Applying a typical declining-percentage curve for that vehicle type puts the estimated current value somewhere in the neighborhood of $14,000–$15,500 — a loss of roughly 55-60% of the original price. If that same owner instead wants to know what the car might be worth 5 years from now, the same style of curve can be projected forward from today's value rather than from the original price. And if someone is looking at a 5-year-old listing priced at $14,000 and wondering what it probably cost new, dividing back through the same retention percentage gives a rough implied original price — useful as a sanity check, not a substitute for checking the vehicle's actual history.
These are hypothetical numbers for illustration only, not a real valuation of any specific car.