Car Depreciation Calculator

The first year takes the biggest bite

A new car loses most of its value before the first oil change. The rule of thumb the industry uses is 20% in the first year, and the most expensive mile is the one from the dealer lot to your driveway. The moment the car is titled to you it becomes a used car, and used cars sell at wholesale prices, not at the sticker you just paid.

Dealers buy at wholesale auction values and sell at retail, and the gap between those two numbers runs 8% to 12% on a typical car. That gap is not depreciation in the accounting sense, but it is money you cannot recover, so it belongs in the same conversation. Add destination fees, dealer documentation fees and dealer-installed add-ons, none of which add resale value, and the drive-off loss can pass 25% on a $30,000 vehicle.

Taxes and registration sit outside the resale number entirely. Sales tax at 6% on a $30,000 purchase is $1,800, and it is gone whether you keep the car for two years or twelve. The same is true of the first registration and title fees. None of it shows up when you sell, and all of it is part of what the car cost you.

This calculator works from the purchase price and two rates: how much the car drops in year one, and how much it drops in each year after that. Those two numbers are enough to model almost any vehicle, and they are far more useful than a single average.

The curve flattens after year one

Depreciation is a declining balance, which is a fancy way of saying each year takes a percentage of what is left rather than a percentage of the original price. A car that drops 12% a year loses $3,600 in the first year of that rate and $2,534 three years later, even though the rate never changed.

The shape matters more than the exact rate. The steep part of the curve is the first three years, and it flattens after that. By year five, the yearly loss is often smaller than a set of tires and a brake job, which is why the cheapest years of car ownership are usually the last ones.

Why does the curve bend? Supply and demand both move in the same direction. Older cars leave the fleet through crashes, rust and mechanical failure, so there are fewer of them each year, while the number of buyers who want a $12,000 car is large and steady. Scarcity props up the price even as the car gets worse.

One consequence surprises people. A car that has already taken the first three years of hits is close to the bottom of the curve, so buying it used transfers most of the remaining loss to the seller. The next owner can drive it for five years and lose less than the first owner lost in eighteen months.

Worked example: a $30,000 car kept five years

Here is the arithmetic for a $30,000 car with a 20% first year drop and 12% a year after that, kept for 5 years and driven 12,000 miles a year.

• Year one: $30,000 times 0.80 is $24,000.
• Year two: $24,000 times 0.88 is $21,120.
• Years three, four and five: the same 0.88 each time, ending at $14,393.
• Total lost: $30,000 minus $14,393 is $15,607.
• Share of the price kept: 48.0%.
• Average loss: $15,607 over 60 months is $260 a month, or $3,121 a year.
• Loss per mile: $15,607 over 60,000 miles is 26 cents.

The 26 cents is the number worth remembering. It does not include gas, insurance, tires or repairs, and it is charged whether the car moves or sits in the driveway. A car that is driven 6,000 miles a year instead of 12,000 costs 52 cents a mile in depreciation alone, because the same loss is spread over half the miles.

Half the value is gone in year five, just barely. At the end of year four the car still holds 54.5% of its price, and at the end of year five it holds 48.0%. That crossover is why five years is the point where many owners start thinking about a replacement, and also the point where keeping the car two more years saves the most money.

Change one input and the answer moves a lot. Raise the first year drop to 25% and the five year value falls to $13,493, which is $900 less for the same car. Cut the annual rate to 10% and the value rises to $15,746. The first year rate is the one to research hardest before you buy.

Five year resale value by type of vehicle

Not every vehicle loses value at the same speed. Body style, fuel prices and demand from the used market decide the shape of the curve, and the spread between the best and worst segments is more than 20 percentage points at five years.

Trucks hold value because the people who need one keep buying them, and because a work truck with 120,000 miles still has a job to do. Sedans have been losing ground for years as buyers move to crossovers, and the used market reflects that. Electric vehicles are the volatile case: tax credits, fast model changes and battery anxiety all push resale down, and a three year old EV can lose half its price.

Segment is only the starting point. A redesign makes the previous body style look old overnight, a discontinued model loses dealer support and buyer confidence, and a model with a reputation for transmission problems takes a hit that no formula predicts. Check the resale history for the exact model and year, not just the category.

Why a luxury car loses more dollars

A luxury car does not lose a larger percentage because it is badly built. It loses a larger percentage because the buyer of a five year old luxury car is paying for status that has partly worn off, and because the repair bills on a complex car scare off the second owner.

Take a $55,000 luxury sedan at a 25% first year drop and 15% a year after that. After five years it is worth about $21,533. That is $33,467 gone, or $558 a month, and 61% of the purchase price. The same driver in a $30,000 mainstream sedan loses $15,607. The luxury car costs $17,860 more in depreciation alone over the same five years.

Options make it worse. A $4,000 technology package, a panoramic roof or a premium paint color adds little or nothing at resale, because the used buyer compares your car with the cheapest one on the lot that has the same engine and mileage. Spend the money on the trim level that holds value, usually the mid grade, and skip the options that only the first owner will enjoy.

There is a counterexample worth knowing. Some luxury models with a cult following, particularly sports cars and certain off road trims, hold value better than the segment average, and a few appreciate. Those are the exception, and they are usually bought used in the first place. For a daily driver bought new, plan on the luxury car costing more per month than the mainstream one, even after the lower maintenance on a newer vehicle is counted.

Mileage, condition and the 15,000 mile line

Mileage is the second largest input after age, and the market has a clear line. Twelve thousand miles a year is the working average. Under 10,000 a year earns a small premium. Over 15,000 a year starts to cost real money at resale, because the next buyer sees a car that will need major service sooner.

The usual estimate is 10 to 20 cents a mile for every mile above the expected total. A five year old car with 90,000 miles instead of 60,000 carries a 30,000 mile excess, which at 15 cents is $4,500 off the value. That is a big number, and it is why a long commute can cost more than the fuel.

Condition moves the number in both directions. A car with complete service records, fresh tires and a clean interior sells at the top of the range. A car with a reported accident, even a repaired one, typically loses 10% to 25% of its value, because the report follows the VIN forever. Paintwork on a car with no accident history is often worse than the original paint, and buyers know it.

Color and configuration matter less than the internet suggests, but they are not zero. Neutral colors sell faster and sometimes for more. A manual transmission narrows the buyer pool to a small group that will pay a premium, or to almost nobody, depending on the model. A base trim with cloth seats and no sunroof is easier to sell than a loaded one in the same condition, because the price gap to new is smaller.

What depreciation leaves out

Depreciation is the largest single cost of owning a new car, and it is also the one people leave out of the budget, because it never appears as a bill. The full cost of ownership is bigger and more useful.

Take the same $30,000 car over five years and 60,000 miles. Depreciation is $15,607. Fuel at 30 mpg and $3.50 a gallon is 2,000 gallons, or $7,000. Insurance for a full coverage policy on a new car runs about $1,200 a year, or $6,000 over five years. Maintenance, tires and brakes come to roughly $4,000. Add $1,800 of sales tax at the start and the total is about $34,400, or 57 cents a mile.

Depreciation is 45% of that total, which is why a car that is cheap to buy can still be expensive to own, and why a car that is expensive to buy can be reasonable if it holds value. The EPA fuel economy site has a yearly fuel cost estimate for any model, and the BLS consumer price index tracks how fast new and used vehicle prices move overall.

There is also an opportunity cost. $30,000 invested for five years at 5% becomes about $38,300, so the true cost of the car includes the $8,300 the money would have earned. That is not an argument against owning a car. It is an argument for knowing what the car costs before the loan payment is compared with the monthly budget.

How to slow the loss down

Depreciation cannot be stopped, but the amount you absorb can be cut by half with a few decisions made before you sign.

Buy two or three years old. The first owner takes the 30% to 40% hit and you buy the car with most of its life left. A three year old vehicle with 36,000 miles typically costs 60% to 65% of the new price and still has factory warranty left on the powertrain.

Keep it longer. The curve flattens, so years six through ten cost far less per year than years one through three. A car kept ten years spreads the same first year loss over a much longer period, and the average annual depreciation falls to about $2,240 on a $30,000 vehicle.

Sell it yourself. A private sale typically brings $1,500 to $3,000 more than a trade-in on a $15,000 car, because the dealer needs room for reconditioning and profit. The cost is your time, a listing, and a few test drives with strangers. If the trade-in saves sales tax on the new car in your state, compare the two numbers before deciding.

Keep the records. A folder of service receipts is worth several hundred dollars at resale and costs nothing. Skip the add-ons. Extended warranties, paint protection and fabric coatings are priced for the dealer, not for you, and none of them raise the resale value.

If the car is used for business, the tax rules are separate from resale value entirely. The IRS Publication 946 covers how business vehicles are depreciated, including the standard mileage rate and the section 179 election, and it is the reference to use rather than a resale estimate.