G17: Seasonal factors for motor vehicle sales have been released

Published on July 30, 2021

The Federal Reserve has re-estimated seasonal factors for motor vehicle sales,using data through April 2021. These factors are estimated once per year using X-13 ARIMA; in the estimation, sales data for March through August 2020 are identified as outliers due to the pandemic recession. The factors will be revised again in the summer of 2022. A comma-delimited text file containing these seasonal factors is available for download here.