The curve everyone underestimates
Depreciation is the difference between what you pay for a car and what it's worth when you sell it, and for most owners it's the biggest line item in the true cost of driving, bigger than gas, bigger than insurance, bigger than maintenance. It's also the easiest to ignore, because you never write a check for it; it just quietly happens while the car sits in your driveway.
The curve is steepest at the start. A typical new car sheds around 20% of its value in the first 12 months and roughly 40 to 50% by the end of year three. Drive a $40,000 car off the lot and it may be worth $32,000 within the year and $22,000 within three years. That $18,000 gap is the real price of those three years, regardless of how little you drove.
After the early plunge, the curve flattens. A car loses a much smaller percentage of its remaining value each year from year five onward. This shape, steep then shallow, is the key to every smart depreciation strategy: avoid the steep part, or hold long enough that the shallow part dominates your average cost.
What holds value and what doesn't
Depreciation isn't uniform. Vehicles in steady demand with reputations for reliability hold value best: many trucks, body-on-frame SUVs, and a handful of brands with cult reliability reputations can retain 60% or more of their value at five years. Their resale strength comes from buyers trusting them used.
At the other end, cars that depreciate hardest share a profile: luxury sedans with expensive out-of-warranty repairs, models that were heavily discounted or fleet-sold when new, vehicles with rapidly improving technology that dates quickly, and anything overproduced. Some luxury flagships lose 60 to 70% in five years, which is brutal for the first owner and a gift for the second.
This matters at purchase, not just at sale. Two cars with the same sticker price can cost wildly different amounts to own once you account for resale, and the slow-depreciating one is often the cheaper car despite an identical price tag. The car depreciation calculator lets you project resale value by model and age before you commit.
The buy-used math, and timing a sale
The clearest way to beat depreciation is to let someone else pay for it. A two-to-three-year-old car has already absorbed the steepest part of the curve, often arrives with remaining factory warranty, and costs a fraction of new while delivering nearly all of the same utility. The first owner paid roughly $18,000 to use that $40,000 car for three years; you get the next several years at a far lower cost-per-year.
On the sell side, timing is about the curve and the odometer. Major mileage thresholds (60,000, 100,000) and the end of the factory warranty are cliffs where value drops, so selling just before them captures more. The same goes for body-style redesigns, which instantly age the outgoing generation in buyers' eyes.
The lowest-cost-per-year strategy is usually to buy a lightly used car and hold it well past year five into the flat part of the curve, keeping it maintained so it stays desirable. The total cost of ownership calculator combines depreciation with fuel, insurance, and maintenance so you can see the true annual cost of buying new versus used, and the when-to-replace-car calculator helps you spot the point where repair costs finally outweigh holding on.