What a Day on the Lot Really Costs

The number most stores quote is the smallest one

Ask what a day on the lot costs and you'll usually get the floorplan number. It's easy to find — it's on a statement, someone in accounting owns it, and it's a real invoice.

It's also the least expensive part of holding a car.

Floorplan interest is the cost of borrowing against the unit. It is not the cost of owning it. The difference matters, because decisions get made off this number: whether to chase a part for three days, whether to wait for a cheaper sublet, whether the recon backlog is worth fixing this quarter. Quote only the floorplan and every one of those decisions gets made against a figure that's a fraction of the truth.

Build your own number

There's no useful industry average here — a $60,000 truck at a rural store and a $14,000 commuter at a metro store have almost nothing in common. So build it for your store. Three components:

1. Floorplan interest. The easy one.

Vehicle cost × annual floorplan rate ÷ 365

A $30,000 unit at 8% is about $6.58 a day. Use your own rate; if you floorplan a percentage of cost rather than the full amount, use that amount instead.

2. Market depreciation. The one that hurts. A used vehicle loses value while it sits, and that loss is real money even though no one sends you a bill for it. The rate isn't constant — it moves with segment, season, model year rollover, and how hot the wholesale market is — so pull it from your own data rather than a rule of thumb. Look at what your aged units actually re-appraised at versus their original appraisal, divide by the days between, and you'll have a defensible per-day figure for your mix.

For most used inventory this number is larger than floorplan interest, often by a multiple. That single fact reorders a lot of priorities.

3. Fixed overhead per unit. Lot space, insurance, plates, lot porters, the software the unit sits in, and the opportunity cost of capital. Take the monthly total of everything that scales with inventory, divide by average units in stock, divide by 30. It's the least precise of the three and still worth including — leaving it at zero is a much bigger error than estimating it roughly.

Your daily holding cost is the sum of all three. Write it on a whiteboard. It's one of the few numbers that should be common knowledge from the used-car desk to the detail bay.

Now multiply it by the part you control

Here's why the number matters operationally rather than just financially.

Total days in inventory splits into two very different periods:

| Period | What it is | Can you sell the car? | |---|---|---| | Acquisition → frontline | Reconditioning, approvals, transport, photos | No | | Frontline → sold | The actual selling window | Yes |

Both cost the same per day. Only one of them can produce a sale.

Days spent in reconditioning are the purest waste in the whole cycle: you're paying full holding cost on a unit that isn't even available to a customer. A car sitting on the frontline for 40 days at least had 40 chances to sell. A car sitting in recon for 12 days had zero.

So take your daily holding cost and multiply it by your average days to frontline. That's what reconditioning delay costs you per vehicle, before you've counted a single lost sale or a single dollar of recon spend. Multiply that by monthly used volume and you have the annual number — which is usually the moment the conversation about recon process stops being an operations topic and becomes a finance one.

Where the days actually go

Once the number is real, the follow-up question is which days you can actually remove. In most stores the recon clock is dominated by waiting, not working:

1. Waiting for approval on a line the manager would have said yes to instantly if they'd seen it. This is the single most common stall and the most fixable one.
2. Waiting between departments — the car is done in service but nobody in detail knows it, so it sits overnight in a handoff gap.
3. Waiting on parts or sublet — often genuinely unavoidable, but frequently discovered late because nobody was watching that unit's clock.
4. Waiting to be noticed — the car is finished and nobody moved it to the line, because "done" was never actually signalled anywhere.

Only one of those four is about technician capacity. The rest are information problems, and information problems are cheap to fix relative to what they cost per day.

Takeaway

Floorplan interest is the price of borrowing against a car. Holding cost is the price of owning it, and on a used unit depreciation usually makes it several times larger. Build the real number for your store, multiply it by the days a vehicle spends in recon — where it's costing you money without any chance of selling — and you'll have the honest price of your current process.

Then go find the waiting. That's where the days are, and it's where Deal to Delivery is pointed: making the stalls visible while they're still happening, not at month-end when the holding cost is already spent.