Astemo

Astemo, Ltd. is a Japanese automotive-components manufacturer headquartered in Tokyo. The company was created in January 2021 through the integration of Hitachi Automotive Systems with three Honda-affiliated suppliers: Keihin Corporation, Showa Corporation, and Nissin Kogyo. The combination brought together businesses specializing in powertrain systems, engine and transmission components, braking, suspension, steering, motorcycle systems, and electronic controls. It was intended to create a larger independent supplier able to serve multiple vehicle manufacturers while combining Hitachi’s electronics and systems expertise with Honda’s established component businesses. The name Astemo is derived from “Advanced Sustainable Technologies for Mobility.” The name expresses the company’s strategic emphasis on technologies associated with connected, autonomous, shared, and electric mobility. Its portfolio covers both passenger vehicles and motorcycles, and includes electrified powertrains, inverters, motors, power-control units, engine and transmission systems, braking and suspension systems, steering systems, steer-by-wire technologies, advanced driver-assistance systems, autonomous-driving components, and in-vehicle software. The company also promotes model-based systems engineering and virtual validation as methods for reducing development time and limiting the need for physical prototypes. Astemo operates as a global supplier rather than as a consumer-facing vehicle brand. Its customers and business relationships include Honda and other vehicle manufacturers, including Nissan-related relationships inherited through Hitachi’s automotive business. The company’s manufacturing, engineering, and regional operations extend across Japan, Asia, Europe, and the Americas. Reference material describes a network of more than 100 business sites in over 25 countries, including plants, research and development centers, technical centers, and regional offices. Notable operations include facilities in Berea, Kentucky; Farmington Hills, Michigan; Schwaig-Oberding, Germany; Qingpu, Shanghai; and Horwich, in Greater Manchester. Electrification is a central area of investment. In 2023, Astemo announced a ¥15.3 billion expansion of its Berea, Kentucky facility to support electric-vehicle component production. In 2025, the company announced a £100 million investment in its Horwich facility, including a production line for electric-vehicle inverters. These projects reflect the broader shift in the automotive supply industry from conventional engine and chassis components toward high-voltage electronics, electric motors, software, and integrated control systems. Astemo’s ownership structure initially gave Hitachi and Honda 40% stakes each, with JIC Capital holding 20%. The structure reflects the company’s origins as a combination of Hitachi’s automotive-systems operations and Honda-associated component manufacturers. In December 2025, Honda announced plans to acquire a further 21% from Hitachi; if completed as described in the reference material, Honda would hold 61%, JIC Capital 20%, and Hitachi 19%. Because the supplied material describes this as an announced future transaction rather than a completed historical change, the ownership status should be verified against current corporate disclosures. The company has also maintained visibility through motorsports and sports sponsorships. Hitachi Astemo has been associated with Team Penske in the NTT IndyCar Series, Real Racing in Japan’s Super GT GT500 class, and S.I. Racing in the MFJ All Japan Road Race Championship. It owns the Japanese women’s volleyball team Hitachi Astemo Rivale and sponsors the Mie Honda Heat rugby team. On April 1, 2025, the company changed its legal name from Hitachi Astemo, Ltd. to Astemo, Ltd.

Astemo was established in January 2021 as the result of a major consolidation in the automotive-supplier industry. The transaction combined Hitachi Automotive Systems with Keihin Corporation, Showa Corporation, and Nissin Kogyo. Hitachi Automotive Systems contributed capabilities in electronic controls, powertrain systems, braking, chassis, and vehicle electronics. Keihin brought engine-management, fuel, powertrain, and motorcycle-related technologies, while Showa and Nissin Kogyo added expertise in suspension, steering, braking, and other vehicle systems. The merged company was designed to achieve greater scale and to offer automakers a more integrated range of components. The new name, Hitachi Astemo, reflected both the company’s Hitachi heritage and its intended future orientation. “Astemo” expands to “Advanced Sustainable Technologies for Mobility,” linking the brand to the industry’s transition toward connected, autonomous, shared, and electric mobility. Rather than operating as a vehicle marque, Astemo functions as a business-to-business technology supplier whose products are incorporated into passenger cars, commercial vehicles, and motorcycles. Its customer relationships include Honda and other automakers, with Nissan-related business connections also associated with the historical development of Hitachi’s automotive activities. During its early years, Astemo concentrated on combining hardware and software into vehicle systems. Its technology areas included conventional and electrified powertrains, motors, inverters, power-control units, braking and steering, chassis control, ADAS, autonomous-driving functions, and connected-vehicle software. The company emphasized model-based systems engineering and virtual validation, approaches intended to let engineers evaluate system behavior digitally, shorten development cycles, and reduce dependence on costly physical prototypes. This direction followed the wider movement toward software-defined vehicles, in which electronic architecture and software increasingly determine vehicle functions. Astemo’s global footprint developed from the networks of its constituent companies. By 2025, the company was described as operating more than 100 sites in over 25 countries, including manufacturing plants, technical centers, research facilities, and regional offices. Its network included Japanese headquarters in Tokyo, a research and development center in Farmington Hills, Michigan, a manufacturing operation in Berea, Kentucky, a European technical center in Schwaig-Oberding, Germany, and a powertrain facility in Qingpu, Shanghai. Operations and sites were also identified in Mexico, France, Brazil, Thailand, and Vietnam. Investment in electrification became one of the company’s most visible strategic priorities. In 2023, Astemo announced a ¥15.3 billion expansion of its Berea plant in Kentucky for electric-vehicle components. In 2025, it announced a £100 million investment at Horwich in Greater Manchester to establish an EV-inverter production line. The projects were intended to shift regional manufacturing capacity toward components required by battery-electric vehicles and to strengthen Astemo’s position in high-voltage power electronics. The company has also used motorsports and sports sponsorships to maintain public and technical visibility. Its sponsorship activities have included Team Penske in IndyCar, Real Racing in the Super GT GT500 class, and S.I. Racing in the MFJ All Japan Road Race Championship. Astemo owns the women’s volleyball team Hitachi Astemo Rivale and sponsors Mie Honda Heat rugby. These activities connect the company with both automotive performance and its Honda-linked corporate heritage. Astemo experienced a significant compliance controversy in December 2021, when it admitted falsifying inspection data for brake and suspension components. The disclosed misconduct reportedly involved more than 50,000 improper tests dating back to 2003. The episode highlighted the governance and quality-control challenges that can accompany the integration of long-established manufacturing businesses. On April 1, 2025, the legal name changed from Hitachi Astemo, Ltd. to Astemo, Ltd. The rebranding removed the Hitachi name from the corporate title while preserving the Astemo identity. In December 2025, Honda announced a plan to acquire another 21% of the company from Hitachi. The supplied reference material describes the resulting ownership as 61% Honda, 20% JIC Capital, and 19% Hitachi, although the completion and effective date of that change should be confirmed through current corporate disclosures.

• 2025

  Corporate name changed to Astemo

  [1]Astemoen.wikipedia.org

  The company changed its name from Hitachi Astemo, Ltd. to Astemo, Ltd. on April 1.

• 2025

  Horwich EV-inverter investment announced

  [1]Astemoen.wikipedia.org

  Astemo announced a £100 million investment in its Horwich facility and a production line for electric-vehicle inverters.

• 2024

  Cantabria grant supported advanced-braking development

  [1]Astemoen.wikipedia.org

  A regional grant supported an experimental development project at the Hitachi Astemo Buelna plant focused on advanced braking systems.

• 2023

  Kentucky electrification expansion announced

  [1]Astemoen.wikipedia.org

  Astemo announced a ¥15.3 billion expansion of its Berea, Kentucky facility to support electric-vehicle component production.

• 2021

  Astemo was established

  [1]Astemoen.wikipedia.org

  Hitachi Automotive Systems, Keihin, Showa, and Nissin Kogyo were integrated to form a global automotive-components manufacturer.

• 2021

  Inspection-data misconduct was disclosed

  [1]Astemoen.wikipedia.org

  The company acknowledged improper inspection-data practices affecting brake and suspension components, with reported cases extending back to 2003.

A global automotive technology and components supplier focused on integrated mobility systems, electrification, chassis control, advanced driver assistance, and vehicle software. Identified in the supplied evidence as an automotive supplier; specific positioning is not established.

• Powertrain

  Electrified powertrain systems

  Astemo develops electric propulsion components and integrated powertrain technologies for electrified vehicles. The area includes electric motors, inverters, power-control units, and related electronic systems. Its investments in Kentucky and Horwich indicate a strategic effort to expand manufacturing capacity for components used in battery-electric and hybrid vehicles.

• Chassis

  Chassis, braking, and steering systems

  The company supplies braking, suspension, chassis-control, and steering technologies for passenger vehicles and motorcycles. These systems are intended to improve vehicle stability, handling, stopping performance, and integration with electronic control architectures. Steer-by-wire is among the advanced steering technologies associated with Astemo's development portfolio.

• ADAS and autonomy

  Advanced driver-assistance systems

  Astemo develops components and systems for advanced driver assistance and autonomous-driving applications. The portfolio is connected to sensing, electronic control, chassis actuation, and software integration, allowing driver-assistance functions to interact with braking, steering, and vehicle-motion systems.

• Automotive software

  Connected and in-vehicle software platforms

  Astemo's software activities support connected vehicles, electronic control, and software-defined vehicle architectures. The company uses model-based systems engineering and virtual validation to develop and test functions across complex hardware and software systems before production.

• Powertrain

  Conventional powertrain systems

  Astemo retains technologies for conventional engines, transmissions, and associated controls alongside its electrification portfolio. These capabilities derive from the businesses integrated into the company and allow it to support automakers during the continuing transition from internal-combustion vehicles to hybrid and battery-electric platforms.

• 2021

  Falsified inspection data for brake and suspension components

  Hitachi Astemo admitted that inspection data for brake and suspension components had been falsified or improperly handled. More than 50,000 instances were reported, with the conduct dating back to 2003. The incident raised concerns about manufacturing quality assurance, compliance controls, and oversight across the predecessor businesses.

  Source

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• Motorsports sponsorships

  United States · Japan

  The company has sponsored Team Penske in the NTT IndyCar Series, Real Racing in Super GT GT500, and S.I. Racing in the MFJ All Japan Road Race Championship. These activities provide brand visibility and associate Astemo with vehicle performance, engineering, and racing applications.

  Outcome. These activities provide brand visibility and associate Astemo with vehicle performance, engineering, and racing applications.

  Source
• Sports team ownership and sponsorship

  Japan

  Astemo owns the women’s volleyball team Hitachi Astemo Rivale and sponsors the Mie Honda Heat rugby union team. Astemo owns the women's volleyball team Hitachi Astemo Rivale and sponsors the Mie Honda Heat rugby union team. The programs extend the company's public identity beyond industrial procurement and connect it with Japanese community and sporting institutions.

  Outcome. The programs extend the company’s public identity beyond industrial procurement and connect it with Japanese community and sporting institutions.

  Source

• 2025

  Invest in United Kingdom EV-inverter manufacturingStrategy

  Background

  Demand for electric-vehicle power electronics was increasing as automakers expanded electrified vehicle programs.

  Action taken

  Astemo announced a £100 million investment at its Horwich facility, including a dedicated EV-inverter production line.

  Aftermath

  The investment was intended to establish a United Kingdom manufacturing base for EV inverters and broaden Astemo’s regional electrification capacity.

  announced investment. £100 million (2025 announcement)

  Source

• 2025

  Remove Hitachi from the corporate nameOther

  Background

  The company had operated under the Hitachi Astemo name since its formation, while Astemo represented the broader mobility and technology identity.

  Action taken

  The legal name changed from Hitachi Astemo, Ltd. to Astemo, Ltd. on April 1, 2025.

  Aftermath

  The change established Astemo as the standalone corporate brand name while the company continued its automotive-components operations.

  Source

• 2025

  Honda announced a planned increase in Astemo ownershipM&A

  Background

  Astemo was initially owned 40% by Hitachi, 40% by Honda, and 20% by JIC Capital.

  Action taken

  Honda announced plans to acquire an additional 21% from Hitachi, which would produce a stated ownership structure of 61% Honda, 20% JIC Capital, and 19% Hitachi if completed.

  Aftermath

  The supplied reference material describes the planned structure, but completion and effective timing require confirmation from current corporate disclosures.

  Source

• 2023

  Expand the Berea facility for electrificationStrategy

  Background

  The automotive industry was shifting toward battery-electric and hybrid vehicles, increasing demand for motors, inverters, and other electric-drive components.

  Action taken

  Astemo announced a ¥15.3 billion expansion of its Berea, Kentucky plant to support electric-vehicle component production.

  Aftermath

  The project strengthened the site’s role in Astemo’s electrification manufacturing network.

  announced investment. ¥15.3 billion (2023 announcement)

  Source

1. 1Astemoen.wikipedia.org
2. 2Astemo official websiteastemo.com
3. 3Hitachi Astemo websitehitachiastemo.com