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Due diligenceExpert answer · 1 min read

How do I find out how long a used car lot’s vehicles sit unsold?

Ask for the purchase date and sale date of every car sold over a recent stretch, then calculate how long each sat. Add the cars still on the lot and sort by age. The slow movers and the oldest units show how well the lot buys, prices and sells.

Start with dates. The lot’s software or logbook should show when each car was bought, when it was ready for sale and when it sold. Ask for the full list over a recent period, and work out the time between those dates. Include cars that have not sold yet, as they are the ones that tell the truth about slow sales.

Next, look at the oldest cars on the lot. What are they, why are they still there and what was paid for them? Aging stock often hides a past buying mistake or a price the seller will not cut. Ask whether the lot has ever written one down, and how it decides when to wholesale a car instead of holding on.

Then look at the pattern. Do certain makes, price levels or seasons sit longer? Are there weeks when almost nothing sells? Ask the seller to explain what they do about it. Your accountant can compare stock aging to the lender’s terms and the cost of carrying stock, which matters if the lot borrows to buy cars. Also ask how the lot decides on price changes. A set routine for reviewing slow cars is a good sign, while a habit of waiting and hoping is not.

Key takeaways

  • Calculate time on lot from purchase and sale dates for every sold car.
  • Include unsold cars and study the oldest ones in detail.
  • Look for patterns by make, price band and season.

Sources

This answer is checked against primary sources. Links were last confirmed on the dates shown.

  1. 01
    Business Development Bank of CanadaGovernment
    How to conduct due diligence when buying a business
    bdc.ca·Checked Oct 21, 2026
  2. 02
    Business Development Bank of CanadaGovernment
    What are the steps to buying a business?
    bdc.ca·Checked Oct 21, 2026
  3. 03
    Business Development Bank of CanadaGovernment
    What is inventory
    bdc.ca·Checked Oct 24, 2026

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