From WardsAuto: September U.S. Light-Vehicle Sales Heading for Strong Year-Over-Year Gain Despite Strike Impact (pay content). Brief excerpt:
The possibility in September that other automakers will benefit much from buyers defecting from the Detroit 3 brands is negligible. The vehicles currently impacted by shutdowns either are products with high brand loyalty, in segments dominated by the three strike-impacted manufacturers or have plenty of inventory.
emphasis added
Click on graph for larger image.
This graph shows actual sales from the BEA (Blue), and Wards forecast for September (Red).
On a seasonally adjusted annual rate basis, the Wards forecast of 15.4 million SAAR, would be up 2% from last month, and up 13% from a year ago.
Vehicle sales are usually a transmission mechanism for Federal Open Market Committee (FOMC) policy, although far behind housing. This time vehicle sales were more suppressed by supply chain issues and have picked up recently.