Enter your units by age and get a letter grade against turn benchmarks — plus what your aged inventory is quietly costing you every month.
Total inventory count tells you how much you own. Age mix tells you how much of it is working. A 30-car lot with everything under 60 days is a different business from a 30-car lot carrying eight units past 90 — same headcount, very different cash position, because every one of those aged cars is accruing interest, shedding value, and taking up a space a faster mover could use.
This grader is a 20-second read on that. It is intentionally rough — a count by bucket, not a VIN-by-VIN report — because the point is the pattern, not the decimal. If the grade stings, the fix is rarely mysterious: the 90+ units need a real decision this week, and the front of the lot needs to be priced to the market on day one so it never gets there.
DealerVLO does this automatically — every unit carries its days-in-stock, and the dashboard flags the aged tail before it becomes a problem. Same math, running on your live inventory instead of a rough count. $29/month, flat.
Most independent dealers treat a unit as aged once it passes 60 days on the lot, and as a problem once it passes 90. The exact line varies by market and price band, but the cost curve is consistent: past 60 days a car is usually losing more to depreciation and carrying cost than another 30 days of exposure will recover. This grader flags your 61–90 and 90+ day buckets separately for that reason.
The grade is based on the share of your inventory sitting past 60 and past 90 days — the two buckets that drive holding losses. A lot with almost everything under 60 days grades an A; a lot with a large 90+ tail grades a D or F. The dollar figure is a separate estimate: floor-plan interest on your aged units (your amount financed × APR ÷ 365 × days), plus a conservative allowance for depreciation and overhead. Interest is exact from your inputs; the depreciation/overhead piece is a disclosed assumption, not a precise figure.
Three clocks run at once on every car sitting on the lot: floor-plan interest accrues daily, the vehicle depreciates toward wholesale, and your overhead (lot space, insurance, reconditioning that ages out) keeps allocating against it. On a typical unit the combined drag runs in the tens of dollars per day, so a handful of 90+ day cars can quietly erase the gross from your fast movers. The fix is not always price — sometimes it is merchandising or moving the car to wholesale — but you cannot manage it until you can see it.