Used-Car Lots Feel the Brunt of America’s Affordability Crisis

The affordability squeeze is not a single borrower's problem. It is a $1.67 trillion balance of U.S. auto loans spread across more than 100 million accounts, and it has pushed the share of payments running at least 90 days late to 5.60% — up from a long-run average near 3.6%. The stress is worst exactly where used-car lots live: subprime delinquencies sit at a three-decade high, and 32% of used-vehicle loans already run longer than six years, up from 29%.

There is no cleaner window into that strain than CarMax, the largest used-car retailer in the country. It finances the loans on more than four in ten of the vehicles it sells, so the crisis shows up on its income statement twice: once in what shoppers will pay, and again on its own lending book. That is the mechanism the broad headlines leave out — and it is why the stock's recent behavior is worth a second look.

The market is betting the pain is over

For all the gloom, CarMax shares are up roughly 48% year to date, trading in the mid-$50s after a stretch that saw a 52-week low near $30. The market is paying about 36 times the last twelve months of earnings — a rich trailing multiple for a retailer whose revenue actually shrank 1.8% in fiscal 2026 and whose net earnings fell from $500.6 million to $247.3 million, a drop that includes a $141.3 million goodwill write-down taken in the fourth quarter.

Read the same multiple forward, and the bet becomes explicit. CarMax changes hands at less than 10 times analysts' estimates of forward earnings — a gap that wide only exists because the market is paying for earnings more than three times the level the company just reported. The rally is a wager that the affordability cycle finally turns in the retailer's favor.

Where the cost actually lands

CarMax's most recent reported quarter shows a business choosing to defend volume at the price of margin. Retail used-unit sales were essentially flat at 230,293 vehicles and same-store units slipped about 0.8%, and the company gave up what it earns on each car: gross profit per retail unit fell about $230 to $2,177, with overall gross margin down from 11.8% to 10.7%. That is the tell of a lot pricing to keep cars moving, not a market snapping back to health.

The second, quieter cost sits on the balance sheet. To serve buyers who can no longer qualify for prime credit, CarMax has pushed down the credit spectrum, and the loans it keeps carry the mark of that shift. The allowance for loan losses stood at $475 million, equal to 2.95% of the loans it holds, up from 2.78% the prior quarter, at a weighted average contract rate of 11.3%. In other words, the affordability problem is being absorbed into CarMax's own financing arm — the retailer finances a buyer whose ability to pay is exactly what the crisis is eroding.

This is the part that makes used-car lots uniquely exposed. A dealer that only sells to a dealer-financed bank sees falling demand as a top-line problem. CarMax finances 43% of its own sales, so a customer unable to afford the payment becomes a credit loss on CarMax's books, not just a missed sale. The two levers — retail margin and captive credit — are being hit by the same force.

The turning point the data has not delivered

What would end the squeeze is a cycle that is not yet cooperating. Wholesale used-vehicle values, the raw material for any used-car lot, fell to a Manheim Used Vehicle Value Index reading of 206.2 in mid-September, down 0.4% from a year earlier — the first negative year-over-year reading of 2026, after the index spent the spring trading above last year. Days' supply of wholesale inventory is up to 27.8, about 2.4 days higher than a year ago, and Cox Automotive's economist said the market has "fully given back" the spring tax-refund bounce.

Lower wholesale prices are a double-edged sword for a retailer. They mean CarMax can restock its lots more cheaply — but they also mean the vehicles it already holds are depreciating on its floor, and they are the symptom of the weak demand that is the underlying problem. Layer on the macro backdrop, and the timing case weakens further: wholesale values are sliding while the Federal Reserve delivered its first rate hike in more than three years and rising fuel prices push shoppers toward the cheapest, smallest cars. For a business whose recovery thesis depends on financing getting easier, that is the wrong direction.

The judgment, then, is a gap between price and evidence. CarMax's 48% advance prices an affordability recovery that the most recent data points have not confirmed: used-vehicle values are rolling over year over year for the first time this year, total retail unit sales were little changed while same-store sales slipped, and the share of the retailer's own loans set aside for losses is still climbing. The bet may yet be right — a seasonal spring bounce plus eventual credit easing would do it. But that outcome has to be shown, not assumed. The read that would confirm the market's thesis is the one it has not yet produced: sustained used-unit growth alongside a flat or shrinking loss reserve. Until that appears, the stock is paying for a turn the evidence is still withholding.