How many Auto auction lots are in the US?

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How many Auto auction lots are in the US?

In 2016, there were 21,430 new car dealerships and 139,278 used car dealerships in the United States. There were 3,909,700 new cars in inventory and approximately 6,858,670 used cars in inventory for a total of 10,768,352 cars in inventory. Unfortunately the data to determine the percentage of dealerships having large, mid-sized, and small inventories was unavailable. Below, I'll go into more detail.
I was unable to find a specific number of used cars in inventory. However, It has been a longstanding practice in the retail auto industry to keep 65 days worth of sales in inventory.

There were 38,513,967 used cars sold in the US in 2016. If the assumption was made that auto dealerships are open 365 days a year, and they keep 65 days worth of sales in inventory, then it could be assumed that by dividing the total used cars sold in 2016 by 365 days, which equals 105,517.72, and then multiplying 105,518 times the 65 days, the total used cars in inventory would be approximately 6,858,652. Therefore, the approximate total new and used cars in inventory in the US were 10,768,352.

In 2016, the annual total sales of new vehicles was $905 billion and the annual growth of sales of new vehicles from 2012 to 2017 were 4.5%.

In 2016, the annual total sales of used vehicles was $126 billion and the annual growth of sales of used vehicles from 2012 to 2017 were 4.6%.

The demand for new cars is expected to increase as disposable income is expected to increase, and as consumers move to fuel efficient vehicles, over the time period to 2022. The demand for used cars will also increase during the next five years, because of good economic factors.

CONCLUSION
In 2016, there were 21,430 new car dealerships and 139,278 used car dealerships in the United States. There were 3,909,700 new cars in inventory and approximately 6,858,652 used cars in inventory for a total of 10,768,352 cars in inventory. Unfortunately the data to determine the percentage of dealerships having large, mid-sized, and small inventories was unavailable. The future looks good for the retail auto industry as the demand for new and used vehicles is expected to increase because of good economic conditions.
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