The next-generation Chevrolet Volt plug-in will debut at the Detroit auto show in January.
Tim Mahoney, Chevy's global chief marketing officer, disclosed the plans at the CAR Management Briefing Seminars in Traverse City, Mich. He also revealed a teaser photo that showed the redesigned 2016 Volt's rear badge and a more sculpted decklid.
The new Volt is expected to arrive in showrooms in late 2015. GM will add a third seat in the rear and downsize to a 1.0-liter, three-cylinder engine, from the current 1.4-liter four-cylinder, sources have told Automotive News.
"You'll see improvements all the way across, from technology to design," Mahoney said. He called the car "a pure expression of what Find New Roads represents," referring to the brand's tag line.
GM has sold more than 65,000 Volts since it went on sale in December 2010. Still, sales volumes have fallen short of the company's initial expectations. Former CEO Dan Akerson had initially projected production of 60,000 Volts in 2012 alone.
This year through July, GM sold 10,635 Volts, down 9 percent from a year earlier. Sales dipped 2 percent last year, to 23,094.