DETROIT — General Motors Co., the largest US automaker, is planning to stop production for about four weeks in September and October at the factory that makes Chevrolet Volt cars, two people familiar with the plan said.
Sales of the plug-in hybrid sedan have not met chief executive Dan Akerson’s projections this year. Through July, GM sold 10,666 Volts in the United States, according to researcher Autodata Corp. Akerson had aimed for sales of 60,000 globally, of which 45,000 would be delivered in the United States. In June he said sales would probably total 35,000 to 40,000.
The people who described the temporary shutdown declined to be identified because Detroit-based GM does not make its production plans public. Automotive News earlier reported that the Detroit-Hamtramck assembly plant will close from Sept. 17 through Oct. 15.
“I can’t confirm those dates,” William Grotz, a GM spokesman, said Monday in a telephone interview. “It’s just a matter of we’re matching supply with demand and gearing up for the production of the Chevy Impala.”
The redesigned Impala sedan will arrive in US showrooms in the first half of next year, Chris Perry, vice president of Chevrolet global marketing, said earlier this year.
The Volt can travel more than 30 miles on electric power before a gasoline engine takes over.
Sales slowed after a US investigation into the safety of the car late last year that was followed by a congressional hearing in January, Akerson said. The National Highway Traffic Safety Administration said in January that the Volt poses no more fire risk than other cars.
The Volt failed to meet its sales goals last year as well.