Observations

Sep 2027: 22

Updated: Mar 17, 2026 9:30 AM CDT

Units:

Per Month,

Not Seasonally Adjusted

Frequency:

Monthly

Notes

Title	Release Dates

Weekday-Basis Seasonal Factors: Weekdays for Calculation	2019-03-15	2026-03-16

Source

Board of Governors of the Federal Reserve System (US)	2019-03-15	2026-03-16

Release

Seasonal Factors for Domestic Auto and Truck Production	2019-03-15	2026-03-16

Units

Per Month	2019-03-15	2026-03-16

Frequency

Monthly	2019-03-15	2026-03-16

Seasonal Adjustment

Not Seasonally Adjusted	2019-03-15	2026-03-16

Notes

The number of weekdays, or production days, in a month, alongside unadjusted motor vehicle assembly data from Table 3 of the G17, and the weekly-basis seasonal factors (SFW) are applied using the formula here (https://www.federalreserve.gov/releases/g17/mvsf.htm).	2019-03-15	2026-03-16

Release Tables

Seasonal Factors for Domestic Auto and Truck Production