For decades, the iron rule of car-buying was simple: never buy new, let the next sucker eat the depreciation. Suze Orman said it, your dad said it, the personal finance internet said it. Then 2020 happened, supply chains broke, used inventory tightened, and the rule quietly stopped being true. Five years later, the math on used versus new is genuinely close, and in many cases the new car wins. The script has not caught up to the spreadsheet.
The depreciation curve flattened
The classic case for used cars relied on a steep first-year depreciation, often 20 to 25 percent, that you could let someone else absorb. Post-pandemic, that curve flattened dramatically. A 2023 iSeeCars analysis found three-year-old used cars depreciating only 33 percent on average, compared to 52 percent in 2019. Cars are holding value longer because new inventory is still constrained, leases are returning fewer vehicles, and demand for affordable used models is high. You are not skimming the cream off depreciation anymore. You are paying close to retail for a car somebody else already drove.
Financing changes the calculation
Used-car interest rates are typically 2 to 4 percentage points higher than new-car rates, sometimes more for older vehicles or buyers with mid-tier credit. Manufacturers also subsidize new-car loans aggressively, sometimes offering 0% to 2.9% promotional financing on new models that no used-car lender will match. Run a five-year loan on a $28,000 used car at 9.5% versus a $34,000 new car at 4.5%, and the total cost is closer than the sticker price suggests, sometimes within a thousand dollars over the life of the loan. Add the new-car warranty, which often covers years of repairs the used buyer pays out of pocket, and the gap narrows further or flips outright.
Reliability and total cost of ownership matter more than purchase price
A used car comes with somebody else’s maintenance history, real or claimed. Even Carfax cannot tell you if the previous owner skipped oil changes, redlined the engine cold, or ignored a coolant leak for 6,000 miles. The first major repair on a 7-year-old car often costs $1,500 to $4,000, which can erase any savings on the purchase price. New cars come with full warranties, predictable maintenance schedules, and modern safety and fuel-efficiency tech that meaningfully cuts operating cost. Per-mile cost of ownership, the metric that actually matters, increasingly favors a moderately priced new car over a similarly priced used one.
The takeaway
This is not an argument that you should always buy new. A two-year-old Toyota with 25,000 miles is still often a sound buy, and certified pre-owned programs can be a reasonable middle ground. The argument is that the reflexive “always buy used” advice was forged in a different market, and applying it without running the numbers in 2026 will sometimes cost you money. Compare total cost of ownership, including financing, insurance, expected repairs, and warranty coverage, over the time you plan to keep the car. The answer is no longer obvious, and obvious answers are how shoppers get fleeced.
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