Astemo was established in January 2021 as a global automotive components manufacturer through the business merger of Hitachi Automotive Systems,
Keihin Corporation,
Showa Corporation, and
Nissin Kogyo. The name "Astemo" stands for "Advanced Sustainable Technologies for Mobility", reflecting the company's focus on technologies related to connected, autonomous, shared and electric mobility. Astemo develops automotive technologies aligned with the industry trends of connectivity, autonomous systems and electrification, with a focus on both passenger and motorcycle applications. Astemo's ownership structure includes major stakes from both
Hitachi, Ltd. and
Honda Motor Co., Ltd., each holding 40%, with JIC Capital holding the remaining 20%. While Astemo includes former Honda-affiliated parts manufacturers, it also maintains business relationships with
Nissan Motor Co., reflecting Hitachi's historical ties to the
Nissan Group. In December 2025, Honda announced it would acquire an additional 21% of Astemo shares from Hitachi. As a result, the shareholding structure of Astemo will change to 61% for Honda, 20% for JIC, and 19% for Hitachi. == Strategic direction and market position ==