The True Cost of a 10-Day Recon Cycle (With Real Math)

The Number Nobody Tracks

Ask a dealer what recon costs and you'll get the repair number: $1,200 a car, $1,700, whatever it is. (NIADA reported independent dealers averaging $1,679 in 2024.)

That's the money you write checks for. The other cost is what happens while the car sits in the shop instead of on the lot: interest on the floor plan, value lost to depreciation, overhead the car is absorbing, and selling days it will never get back. Those costs don't appear on any repair order, which is why they're easy to underestimate.

Let's do the math with real, current numbers, and then show you how to run it for your own store.

The Example Store

Every figure below uses the same example. Change the inputs to match your store.

• 50 used retail units a month.
• $20,000 average cost per vehicle. For reference, Manheim's average wholesale value (MMR) for 2024 was $18,928 through late November, and vAuto founder Dale Pollak noted that many dealers' actual investment per vehicle runs closer to $25,000.
• Recon takes 10 days instead of 5. Ten days is roughly what one consultant puts typical national averages at; five is near the published targets. (How to Reduce Your Dealership's Time to Front Line lists the benchmarks and their sources.)

Five extra days on 50 cars is 250 extra vehicle-days a month, or 3,000 a year. Each cost below is a daily cost multiplied by those 3,000 days.

1. Floor Plan Interest

If a vehicle is on your floor plan, you pay interest every day it's in stock, whether it's on the front line or waiting for detail. Rates vary a lot depending on who you borrow from:

The big public groups borrow at large-company rates. AFC lends to independent dealers, and its 18.1% is what it earned on its receivables in interest and fees, which is close to what those dealers paid. Most stores fall somewhere in this range. If you pay cash for inventory instead of flooring it, the cost doesn't disappear; you give up whatever that money would have earned elsewhere.

2. Depreciation

Used vehicles lose value while they sit, and the rate changes month to month. Cox Automotive's index of three-year-old vehicles fell 1.8% in August 2026, against a typical 0.6% for that time of year.

This index measures wholesale prices for three-year-old vehicles, so treat it as a guide, not a forecast for your inventory. Values move differently by month, age and segment.

Adding Up the Direct Costs

Floor plan interest plus depreciation, for five extra days on 50 cars a month:

• Low end (AutoNation's rate, a typical month): about $20,400 a year
• Middle (Sonic's rate, a typical month): about $22,500 a year
• High end (an independent on AFC rates, in a month like August 2026): about $65,300 a year

Those numbers are smaller than the six-figure totals often quoted for slow recon. They are also only the costs that are easiest to measure. The two below can be larger.

3. Overhead: Fully Loaded Holding Cost

Your used-car department has fixed costs: salaries, rent, utilities, policy work. Divide them across the cars in stock and every car carries a share of overhead for every day it sits. Add that share to interest and you have fully loaded holding cost per day.

You'll see this number quoted everywhere, from $30 to $85 a day, usually with no calculation behind it. It's different for every store, so calculate your own. Tony Albertson of NCM Associates set out a method in WardsAuto in 2008:

1. Take your used-vehicle department's year-to-date expenses.
2. Subtract the variable expenses: sales commissions, delivery, policy adjustments, F&I commissions. What's left is your holding cost.
3. Divide by the number of months in the period.
4. Divide by your average monthly retail units multiplied by 1.33. In the article, that multiplier represents a benchmark 45-day supply.
5. Divide by the number of days you're open in a month. The result is your holding cost per vehicle per day.

NCM's worked examples give a sense of the range: $52.12 per day in that 2008 article, and $17.53 per day in an earlier WardsAuto example from NCM's Tony Noland. At those rates, our example store's 3,000 extra days a year would carry about $52,600 to $156,400 of overhead.

A caveat matters here: faster recon doesn't make fixed costs go away. What it does is let the same overhead support more sales, because every car spends more of its life available to buy. That's the next cost.

4. Lost Selling Time

A vehicle in recon can't be sold. Three ways to see what that costs:

Cars available to sell. At 50 cars a month, about 1.6 cars enter recon each day. With a 10-day recon, about 16 cars are in the shop at any time. With 5 days, about 8. Cutting recon in half puts about eight more cars on the front line on an average day, roughly $164,000 of inventory at our example cost, without buying a single extra vehicle.

The aging clock. NADA's long-standing guide is twelve used-vehicle turns a year, or about 30 days from acquisition to sale. A 10-day recon uses a third of that window before the car goes on sale; a 5-day recon uses a sixth. NADA's 20 Group data showed about half of used units selling within their first 30 days in stock. And as NADA puts it, "As long as used vehicles remain unsold, your gross profit margin deteriorates."

Gross per unit. In their latest annual filings, the large public groups reported used retail gross of about $1,500 to $2,250 per unit (AutoNation $1,555 for 2025; CarMax $2,253 for its fiscal year ended February 2026). A week of direct carrying cost on our example car is about $48 at the low end and $152 at the high end: roughly 3% to 10% of AutoNation's average used gross, before any overhead. Carvana's annual report puts the link simply: "Reductions in average days to sale lead to fewer vehicle price reductions."

5. Customers Who Don't Wait

This one doesn't fit in a spreadsheet. A shopper finds the car on your website, calls about it and hears "it's still in the shop, should be a few days." Some will wait. Some will buy the similar car down the road that's ready today.

Run Your Own Numbers

Fill in the worksheet below, or use the recon cost calculator, which uses the same method and starts from this article's example store.

1. Monthly used retail volume: _____ vehicles
2. Current average days to front line: _____ days
3. Target days to front line: _____ days
4. Gap (current minus target): _____ days
5. Extra vehicle-days a year: volume × gap × 12 = _____
6. Average vehicle cost: $_____
7. Floor plan per day: vehicle cost × your floor plan rate ÷ 365 = $_____
8. Depreciation per day: vehicle cost × monthly decline × 12 ÷ 365 = $_____ (Cox Automotive publishes the latest Manheim index figures every month)
9. Direct carrying cost a year: (line 7 + line 8) × line 5 = $_____
10. Fully loaded: your holding cost per day (NCM method above) × line 5 = $_____

The Leverage Point

You don't have to eliminate recon to save this money. You have to speed it up. Because the costs are per day, savings scale with every day removed: going from 10 days to 7 captures 60% of the gap; going from 7 to 5 captures the rest. Neither requires more people or more spending on repairs. It requires:

• Knowing where every vehicle is, at every moment
• Removing the dead time between stages
• Getting alerted when a vehicle passes your day threshold
• Measuring your actual performance so you can see it improve

The work doesn't change. The time between the work does.

The Bottom Line

Slow recon doesn't show up as a line on your P&L. It shows up as higher floor plan costs, overhead spread over fewer sales, fewer cars on the lot, and deals that walk because the car wasn't ready. The fix isn't complicated: track your vehicles, measure your days, remove the dead time.

Frequently Asked Questions

What does it cost to hold a used car for one day?

It depends on the store. At 2025 rates, floor plan interest on a $20,000 vehicle runs from about $2.85 to $9.90 a day, and depreciation adds roughly $4 to $12. Fully loaded holding cost, including the department's fixed overhead, came to $17.53 and $52.12 a day in two NCM Associates worked examples. Calculate your own with the method above.

How do you calculate holding cost per day?

Take your used-vehicle department's year-to-date expenses, subtract variable expenses such as commissions, divide by the number of months, divide by your average monthly retail units times 1.33, then divide by the days you're open per month. That is the method NCM Associates' Tony Albertson described in WardsAuto.

How much floor plan interest does a used car cost per day?

Multiply the vehicle's cost by your floor plan rate and divide by 365. On a $20,000 car, AutoNation's 5.2% used rate (end of 2025) is about $2.85 a day, Sonic Automotive's 6.5% is about $3.56, and the 18.1% AFC earned from independent dealers is about $9.92.

Are the "$30 a day" or "$50 a day" holding cost figures accurate?

They might be accurate for somebody's store, but they rarely come with a calculation or a source. Holding cost depends on your expenses, your volume and your financing, so a number borrowed from another store can be off by a factor of three. Work out your own.

How fast do used cars lose value?

It varies by month and segment. Cox Automotive's index of three-year-old vehicles fell 1.8% in August 2026, against a typical 0.6% for that time of year. On a $20,000 vehicle, that range is about $4 to $12 a day.

Sources

1. NIADA, Independent auto sales off to another strong start (June 2024).
2. vAuto (Dale Pollak), A Disturbing Trendline in Used Vehicle ROI (November 2024).
3. CBT News, How reconditioning efficiency drives used car profitability (January 2026).
4. Annual reports on Form 10-K: AutoNation, Sonic Automotive, OPENLANE (AFC), CarMax, Carvana.
5. Cox Automotive, Manheim Used Vehicle Value Index: August 2026 Trends (September 2026).
6. Tony Albertson (NCM Associates), A Formula to Avoid Trouble, WardsAuto (May 2008).
7. Tony Noland (NCM Associates), Hold the Holding Costs, WardsAuto (October 2004).
8. NADA, Analyze Your Inventory to Maximize Used-Vehicle Profits (2017).