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Weekday-Basis Seasonal Factors: Auto Production (G17MVSFWAUTOS)


Jun 2022: 106.83  
Updated: Apr 15, 2021


Seasonal Factor,
Not Seasonally Adjusted


1Y | 5Y | 10Y | Max


Source: Board of Governors of the Federal Reserve System (US)  

Release: Seasonal Factors for Domestic Auto and Truck Production  

Units:  Seasonal Factor, Not Seasonally Adjusted

Frequency:  Monthly


A seasonal factor measures the percentage amount that on average, monthly production is above or below normal. A seasonal factor of 120 states that the month in question will usually be 20% above an average month's production level. Similarly, a seasonal factor of 100 implies an average month, while a factor of 80 implies a month that is typically 20% below average.

The not seasonally adjusted (NSA) data for auto assemblies are obtained from Ward's Communications, the weekly-basis seasonal factors (SFW), which contain adjustments for holiday and length-of-month effects as well as normal seasonal variation, and the number of production days, or weekdays in a month, are applied to MVAAUTOASN using the formula found here.

Suggested Citation:

Board of Governors of the Federal Reserve System (US), Weekday-Basis Seasonal Factors: Auto Production [G17MVSFWAUTOS], retrieved from FRED, Federal Reserve Bank of St. Louis;, December 8, 2021.


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