Summer auto sales season off to a good start May 31, 2018 AFSA Staff Forecasts from leading automotive industry analysts predict car and light truck sales to rise 3 percent in May to 1.56 million vehicles, according to Automotive News. The rise from a year ago is mainly attributed to an extra selling day this May vs. a year ago and incentive deals offered over the Memorial Day weekend. There are 26 selling days this month. Automakers are scheduled to release May sales figures on Friday. "The summer selling season is off to a healthy start," Jeremy Acevedo, Edmunds manager of industry analysis, said in a statement. "Despite rising gas prices, shoppers are clearly demonstrating their confidence in the strength of the economy as they continue to seek out larger, more expensive vehicles."