20% of a Car's Value Goes in Year One:
pricing depreciation before you sign

The purchase that destroys money

A new car doesn't just cost money. It destroys money — reliably, measurably, fastest in the first year — and most buyers finance the destruction and pay interest on it. That sentence contains the whole chapter; the rest is pricing it.

Depreciation is the silent line item: the gap between what you paid and what the thing is now worth. It appears on no statement, triggers no alert, and yet for car-owning households it is routinely among the largest true expenses they have — larger than the fuel, often larger than the interest, sometimes larger than the payment itself in the early years. It goes unmanaged for the usual Track-2 reason: it's invisible. Nobody sends you a bill for the value your driveway lost this month.

The curve, priced

For new cars the curve is brutal: roughly 20% of value gone in year one, and often 50–60% by year five — though the average five-year figure has been closer to 42% lately, with wide variation by type (EVs depreciate fastest; trucks and hybrids slowest).¹ Concretely: a $40,000 new car is worth roughly $32,000 after year one — $8,000 of value gone, about $650 a month — before interest, insurance, or a single tank of gas.

Financing makes it stranger: you pay interest on value that no longer exists. Finance the $40,000, and a year in you're paying interest on a loan balance that may exceed the car's worth — the underwater stretch, where you owe more than the asset. Gadgets run the same curve faster — the $1,200 phone is worth half within a year or two — smaller stakes per item, same shape, often on the same financing.

The honest price, and the used-car arbitrage

The point is not "never buy new" or "never buy nice" — that's the lecturing this curriculum doesn't do, and Volume 2's Spending on What You Actually Enjoy defends spending real money on what you genuinely value, cars included. The point is that depreciation is a price, and it deserves to be read as one before the purchase: the honest cost of a car isn't the sticker — it's (depreciation + interest + insurance + maintenance) per year of ownership. Two cars with similar stickers can differ by thousands per year on that honest metric; the sticker comparison hides it, the per-year comparison reveals it.

Read that way, one arbitrage falls out of the curve's shape: the steepest depreciation is front-loaded, which means the 3-year-old version of the same model — with the steepest stretch already absorbed by the first owner — is one of the most reliably good deals in consumer finance. A comparable 3-year-old car at $25,000 versus the $40,000 new one: someone else's wallet paid the $650-a-month year. Kept ten years, the total-cost gap between "new every 4 years" and "lightly-used, kept long" commonly reaches tens of thousands — a NEST-sized difference produced entirely by where on the curve you board and how long you ride. Income context: that gap is real money at every income, but at $50,000 the "new every few years" habit can quietly be the single largest discretionary wealth leak in the household — bigger than every fee in $230 Billion a Year Is the Price of Inattention: the fees worth moving accounts over combined.

Where Plenee fits

Vehicles you track in Plenee show up in your NEST at realistic value, not purchase price — so depreciation is visible as what it is: your money, leaving, month by month. That does for the silent line item what this track does everywhere: converts an invisible cost into a number you can weigh. Whether the number is worth it — for the car you love, the reliability you need, the delight that's genuinely yours (Spending on What You Actually Enjoy) — is your call, made with the price tag finally attached.

The takeaway

Spend on what you love, but price the depreciation before you sign: the honest cost is per-year of ownership, not the sticker. The steepest part of the curve is optional — someone will always volunteer to pay it for you and hand you the car three years later at a discount. Boarding the curve late and riding it long is the quiet, unglamorous move that compounds into a visibly different NEST.