G17: Seasonal Factors for domestic auto and truck production have been revised
Published on March 17, 2022
Seasonal factors for auto and truck production were revised from January 2017 through June 2023 on March 17, 2022. The revised factors for September 2021 through February 2022 were used in the G.17 release issued on March 17, 2022, and the revised factors for earlier months will be incorporated into the production estimates at the time of the annual revision in the second quarter of 2022. The revised seasonal factors are based on production data through January 2022; in the estimation, production data for February and September 2021 are identified as outliers due to more intense supply chain disruptions; February data were also affected by severe winter weather. The seasonal factors are scheduled to be revised again in March 2023.