Stock turn for used cars: target days and how to improve
Stock turn for used car dealers: how to calculate it, days to sell by segment, the daily cost of holding a car and how buying right speeds turn.
· 7 min read
Stock turn tells a used car dealer how many times a year the inventory is sold and replaced: cost of cars sold in a year divided by average stock value. A turn of 8 means cars sit about 45 days on average. Every extra day costs depreciation, finance and overheads, so the best way to improve stock turn is to buy cars that can be listed at market price from day one.
How do I calculate stock turn for a used car dealership?
Stock turn is the cost of vehicles sold over a period divided by the average value of stock held during that period. For a full year:
Stock turn = annual cost of cars sold ÷ average stock value at cost
Average days in stock = 365 ÷ stock turn
Example:
- Cars sold in 12 months: 240, total cost €3,360,000 (average €14,000)
- Average stock at cost: 40 cars × €14,000 = €560,000
- Stock turn = 3,360,000 ÷ 560,000 = 6.0
- Average days in stock = 365 ÷ 6 = about 61 days
You can also calculate it in units (cars sold ÷ average number of cars in stock), which is simpler and works well if your car values are similar. Use cost values, not retail prices, and use the average over the year, not the stock on 31 December – year-end stock is often unusually low or high.
Stock turn on its own is a blunt number. Track it together with the age profile of your stock: how many cars are 0–30, 31–60, 61–90 and over 90 days old.
How many days should a used car take to sell?
There is no universal target, because days to sell depend on segment, price level and sales channel. As a working benchmark, many independent dealers aim for an average of 30–60 days and treat cars over 90 days as problem stock. Your own history is the better guide: measure average days to sell by segment and set targets from there.
Typical patterns that most dealers will recognise:
| Segment | Relative speed | Why |
|---|---|---|
| Mainstream hatchbacks and estates, 3–8 years old | Fast | Broad demand, easy to price |
| Popular SUVs and crossovers | Fast to medium | Strong demand, more price variation by spec |
| Cheap high-mileage cars | Fast if priced right | Buyers compare price above all |
| Premium saloons and large diesels | Medium to slow | Smaller buyer pool, higher prices |
| EVs | Variable | Prices move fast; buyers want battery proof |
| Sports, niche and imports with odd specs | Slow | Few buyers, harder to compare |
The important thing is consistency: a car that has not sold in your usual time for its segment is overpriced, badly presented or the wrong car.
For car dealers
Know your margin before you buy
MyCarDealer compares any car from an auction or listing with the market in your country and shows the net margin after VAT, transport and costs – and the maximum bid.
Request accessWhat does it cost to keep a car in stock?
The daily cost of holding a used car is the sum of depreciation, finance, and a share of overheads. Depreciation is usually the biggest part, even though it never appears as an invoice.
Illustrative daily holding cost for a €14,000 car:
| Cost | Assumption | Per day |
|---|---|---|
| Depreciation | Market value falls about 1% a month | €4.60 |
| Finance | 7% a year on €14,000 | €2.68 |
| Insurance, space, advertising | €1,500 per car-year share | €4.11 |
| Total | about €11.40 |
At that rate, 30 extra days cost about €340, and 90 extra days more than €1,000 – often more than half the margin on a car of that value. The figures are examples; your own depreciation rate and overheads will differ, but the order of magnitude is typical. If you use stocking finance, see floor plan financing for how interest and curtailments add up.
The second cost is invisible: the car that did not arrive because capital and space were tied up in the one that did not sell.
Why buying right is the biggest lever
Most slow stock was bought too expensively. If you pay a price that only works when the car sells above market, you will either wait for the buyer who pays too much or cut the price and lose the margin. A car bought so that it can be listed at market price on day one usually sells within your normal time.
Before every purchase, answer three questions:
- What do comparable cars – same model, generation, engine, year range and mileage – actually sell for in my market now?
- How many comparable cars are listed, and how fast do they disappear?
- What is my net margin at that price after VAT, reconditioning, transport and holding costs?
MyCarDealer answers these from current listings: market price as a weighted median of comparable cars, net margin after margin-scheme VAT and costs, and a maximum bid for auctions. You can try it on one car with a free valuation.
How can I improve stock turn?
Improving stock turn comes from a few habits applied every week, not from one big change.
- Buy to the market, not to your gut. Set a maximum price before every auction or deal and stick to it.
- Cut time to line. Every day between purchase and listing is a day in stock with no chance of a sale; see reconditioning workflow.
- Price at market from day one. Starting high "to leave room" usually costs the first, most valuable weeks of interest.
- Use a reduction schedule. Review prices weekly and reduce cars that get too few enquiries; see used car price reductions.
- Set an exit point. Cars that reach a set age – often 75–90 days – are wholesaled or sent to auction rather than discounted endlessly.
- Buy what sells. Use your sales history and lost enquiries to stock more of the cars that turn fastest.
- Present properly. Good photos, complete descriptions and a clear price help a car sell in its first weeks, when most enquiries arrive.
Measuring stock turn weekly
Annual stock turn is useful for the accounts, but it reacts too slowly to steer the business. Track these numbers weekly:
- Number of cars in stock and total value at cost.
- Share of stock over 60 and over 90 days.
- Average days to sell for cars sold this month.
- Cars without enquiries in the last 7 days.
Together they show problems a month before they reach the profit and loss account. Our list of car dealer KPIs explains how these fit into a weekly dashboard.
Frequently asked questions
How do I calculate stock turn for a used car dealership?
Divide the annual cost of cars sold by the average stock value at cost. For example, €3.36 million of cars sold with €560,000 of average stock gives a stock turn of 6, which means cars stay about 61 days on average (365 ÷ 6).
How many days should a used car take to sell?
It depends on segment and price, but many independent dealers aim for an average of 30–60 days and treat cars over 90 days as problem stock. Measure your own averages by segment and set targets from them.
What does it cost to keep a car in stock?
Depreciation, finance and a share of overheads such as insurance, space and advertising. For a €14,000 car this can easily reach €10–12 per day, so every extra month costs several hundred euros of margin.
How can I improve stock turn?
Buy at prices that let you list at market value from day one, shorten the time from purchase to listing, review prices weekly, and wholesale cars that pass a set age. Buying the right models for your customers matters as much as price.
Is a higher stock turn always better?
Mostly, but not at any price. Very high turn achieved by underpricing cars gives away margin. The goal is the highest gross profit per car per day in stock, not just the fastest sales.