How to track true profit per car at your dealership

Every dealer knows their lot average. Far fewer can answer the sharper question: what did that specific car make, after everything? The gap between those two numbers is where dealerships quietly leak money — because a healthy average is entirely capable of hiding three cars a month that lost.

The full formula

True per-car profit is the sale price minus everything the car actually cost you:

• Vehicle price — the hammer price or purchase amount.
• Buy fees — auction and online fees, itemized, not folded into the price.
• Transport — getting it to your lot (and rebooked transport when a deal moves).
• Reconditioning — parts, labor, detail, tires, glass, the second repair after the first one uncovered something.
• Holding costs — floor plan interest if you carry it.
• Arbitration and returns — credits you won come back onto the car; make-goods you gave come off it.

Nothing in that list is exotic. The failure mode isn't ignorance — it's that the pieces live in five different places and only get assembled at tax time.

The five costs that go missing

1. Transport, because it's billed by a third party weeks later and lands in a general expense pile instead of on the car.
2. Buy fees folded into the purchase price, which makes the auction look cheaper than it is and hides what each channel really costs you.
3. Recon receipts that never make it out of the glovebox — the $80 here and $140 there that add up to real margin.
4. The second round of repairs — the first estimate got recorded, the follow-up work didn't.
5. Post-sale adjustments — an arbitration credit or a goodwill repair after delivery that never flows back to the deal.

Front-end, back-end — per-car comes first

Retail dealers rightly track front-end gross and back-end (F&I) separately. But both rest on the same foundation: an accurate cost basis for the unit. Get the per-car number right first; slicing it comes second.

Habits that keep the number honest

• Record expenses the day they happen, on the car. Snap the invoice with your phone and attach it to the VIN. Batching receipts "for later" is how they vanish.
• Itemize every buy. Vehicle price, fee, transport — three lines, not one blended number.
• Reconcile at closeout, not month-end. The moment a car sells is when memory is freshest. Confirm the profit number as part of closing the deal.
• Review the losers. Once a month, pull the bottom five cars and ask why. Bought wrong, recon surprise, aged too long? That review changes what you buy next.

Spreadsheet or software?

A disciplined spreadsheet can do all of this at low volume — see our honest take on running a dealership on Excel. The advantage of a system like Flux is that the assembly is automatic: expenses land on the VIN with the invoice attached, and profit per car updates live — including fees, transport, and arbitration — so the number on the dashboard and the number on the car's page are always the same number.