The seasonally adjusted annualized rate used to measure strength of the auto industry of 16.98 million vehicles, the highest rate since July 2006, Autodata Corp said.

Most major automakers beat expectations, and sales at the top-selling manufacturer in the U.S. market, General Motors Co (>> General Motors Company), rose 1 percent despite its ongoing safety crisis. Analysts had expected GM's sales to fall 6 percent.

(Reporting by Bernie Woodall; Editing by David Gregorio)