G17: Seasonal factors for motor vehicle sales have been released

Published on July 31, 2018

The Federal Reserve has re-estimated seasonal factors for motor vehicle sales, using data through April 2018. These factors are estimated once per year using X13-ARIMA. The factors will be revised again in the summer of 2019. A comma-delimited text file containing these seasonal factors is available for download here. A Technical Q&A with details on the calculation of the seasonal factors for light vehicles is available here.

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