General Motors Co. and PSA/Peugeot-Citroen could consider joint production of some vehicles, PSA CEO Philippe Varin said.
"Our factories already assemble Peugeot and Citroen cars on the same production lines," Varin told the French radio station RTL on Friday. "In the future we could perhaps make General Motors cars, and vice versa."
Joint production won't happen before 2016, Varin added. "So there's no impact on production in the short term."
Separately, a German newspaper said GM and PSA may use the platform underpinning the Opel/Vauxhall Insignia mid-sized car to build new large cars.
The platform would benefit PSA, which struggles to make money with its larger vehicles such as the Peugeot 508 and Citroen C5, Die Welt said, citing an Opel manager.
"The platform can be extended. It was supposed to underpin a large Saab car that will no longer go into production," the paper quoted the manager as saying.
GM and PSA could also develop a new joint platform to underpin up to 2 million subcompact cars a year, mainly for Latin American markets, the paper said.
GM and PSA said on Wednesday they are to form a global alliance targeting a cut in annual costs of at least $2 billion.
Reuters contributed to this story