This monthly FRED automotive industry report is focusing on the US and uses data also available here: https://research.stlouisfed.org/useraccount/apikey
As the title indicates the data is provided by the US Federal Reserve.
Below chart summarizes US domestic car production in units, since 1993 (monthly figures, seasonally adjusted):
Below is an overview of car production output (US domestic) throughout the past 12 months:
Below chart summarizes domestic US imported new car sales:
Below chart focuses on the most recent 12 months only: