Sales in March were revised down slightly from 11.37 million SAAR to 11.36 million SAAR.
This graph shows light vehicle sales since 2006 from the BEA (blue) and an estimate for April 2020 (red).
The impact of COVID-19 is significant, although April may be the worst month for vehicle sales (depending on the course of the virus).
The second graph shows light vehicle sales since the BEA started keeping data in 1967.
Sales collapsed in the second half of March, and in April were at the lowest level in 50 years - even lower than at the depth of the Great Recession.