G17: Seasonal factors for motor vehicle sales have been released

Published on September 27, 2024

The Federal Reserve has re-estimated seasonal factors for motor vehicle sales,using data through April 2024; in the estimation, data for September through November 2023 as well as for January 2024 are identified as outliers because of the United Auto Workers strike and winter storms. These factors are estimated once per year using X13-ARIMA. The factors will be revised again in the summer of 2025.

A comma-delimited text file containing these seasonal factors is available for download here (CSV).