BOSTON, Aug 31 (Reuters) - Billionaire investor David Einhorn’s hedge fund Greenlight Capital, whose bets on and against car companies General Motors and Tesla moved against him in August, lost 7.6 percent this month leaving the fund down 25.1 percent for the year, two investors said on Friday.

Reporting by Svea Herbst-Bayliss; Editing by Sandra Maler Our Standards: The Thomson Reuters Trust Principles.