G17: Seasonal factors for motor vehicle sales have been released

Published on September 30, 2022

The Federal Reserve has re-estimated seasonal factors for motor vehicle sales,using data through April 2022; in the estimation, sales data for January, March through May, August, and September 2021 are identified as outliers due to the disbursement of economic impact payments and the effect of supply chain bottlenecks on production. These factors are estimated once per year using X13-ARIMA. The factors will be revised again in the summer of 2023.

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