Honda and Sony will form a new company to create and commercialize for "high value-added" battery electrics in various markets, including the U.S.

As part of the push, Renault will lead development of a common centralized electrical and electronic architecture and will introduce its first "full software defined vehicle" by 2025.

Toyota CEO Akio Toyoda said the automaker was still pursuing a multi-pronged, carbon-reduction strategy that also includes hybrid cars and hydrogen-powered vehicles.