What Astemo makes

Astemo is a full-system Tier-1 supplier to automobile and motorcycle manufacturers, organized into three business divisions. The Vehicle Business, which accounts for roughly 54% of revenue, covers chassis, braking, steering, and engine-management systems: suspension struts, semi-active dampers, electric power steering, disc and drum brakes, electro-mechanical and electrohydraulic brake-by-wire systems, propeller shafts, and fuel and intake components. The Electrification Business, at about 26% of revenue, focuses on the powertrain components that make up battery-electric and hybrid drivetrains: EV motors, inverters, battery control units, in-wheel motors in 12-, 16-, and 19-inch configurations, and e-axles. The Motorcycle Business, around 20% of revenue, includes injectors, throttle bodies, and suspension and brake products, areas where the company reports holding the top global market position.

Advanced driver assistance and software-defined vehicle work spans all three segments. The company's ADAS portfolio covers stereo cameras, 360-degree 3D sensing, millimeter-wave radar, and control units scaled across entry, mid-range, and premium vehicle tiers. A steer-by-wire system called SBWS replaces mechanical steering column linkage. The Cypremos software platform is Astemo's cloud-native SDV architecture, covering in-vehicle software, IoV data, and AI-powered trajectory prediction.

The company holds approximately 17,460 patents and reports serving around 70 automobile and motorcycle OEM customers worldwide.

Financial performance

Astemo generated approximately 2,200 billion yen in revenue in its fiscal year ended March 2026, equivalent to roughly 12.7 billion euros per the Berylls by AlixPartners Top-100 study -- placing it 25th globally among automotive parts manufacturers. Revenue was essentially flat year on year, down 0.2% from the prior period. Operating income (IFRS) for the same period was approximately 62 billion yen, an implied margin of roughly 2.8%. The company spent approximately 182 billion yen on research and development, a figure that reflects the scale of its electrification and autonomous-driving programs.

Roughly 5 billion dollars of annual revenue is attributed to the Americas region, according to a published company account, representing about 31% of total revenue. The company employed approximately 80,000 people across 129 bases in 26 countries as of its most recent published figures.

Ownership and history

Astemo was formed on January 1, 2021 through the merger of four Japanese automotive component companies: Hitachi Automotive Systems, Keihin Corporation, Showa Corporation, and Nissin Kogyo. Each had histories stretching back decades in powertrain, chassis, and motorcycle components; the merger created a single entity with combined scale to compete in the electrification-driven restructuring of the automotive supply base.

At formation, Hitachi held 66.6% and Honda 33.4%. In 2023, a capital restructuring brought in JIC Capital as a 20% investor, equalizing Hitachi and Honda at 40% each. A further change was announced in December 2025: Honda agreed to purchase an additional 21% from Hitachi for approximately 152.3 billion yen, raising Honda's ownership to 61% and making Astemo a consolidated Honda subsidiary. Hitachi retains 19%. The transaction was pending regulatory approvals as of that announcement, with completion targeted for the first quarter of Honda's fiscal year 2026. Astemo's stated longer-term goal is an eventual public listing.

On April 1, 2025, the company changed its name from Hitachi Astemo to Astemo and relocated its registered headquarters from Hitachinaka City, Ibaraki Prefecture to Chiyoda Ward, Tokyo. The name Astemo expands to Advanced Sustainable Technologies for Mobility.

The company operates across 26 countries with 98 group companies. Its Americas operations trace operational roots to 1974 -- the legacy Hitachi Automotive Systems plant in Harrodsburg, Kentucky, which opened in 1985, remains a primary production site today.

Certifications and quality

IATF 16949 multi-site certification is the published quality standard for Tier-1 automotive suppliers of Astemo's size and customer mix, and the company describes IATF-compliant processes across its manufacturing operations. Customers including Honda, General Motors, Ford, and Nissan require IATF 16949 certification as a supply qualification condition. The company holds approximately 17,460 patents, a portfolio that reflects its involvement in safety-critical and regulated vehicle systems.

Known customers

Astemo's customer relationships with the following manufacturers are documented in company or third-party press coverage:

Beyond these named relationships, the company reports serving approximately 70 automobile and motorcycle manufacturers globally.

Recent news

September 2026 -- Astemo Americas announced an investment of more than $112 million to expand hybrid electric-vehicle motor production at its Berea and Harrodsburg, Kentucky manufacturing plants, adding nearly 300,000 square feet and 114 immediate jobs, with 282 total over the program (company press release).

December 2025 -- Honda and Hitachi announced that Honda will acquire an additional 21% stake in Astemo from Hitachi for approximately 152.3 billion yen, raising Honda's ownership to 61% and making Astemo a consolidated Honda subsidiary pending regulatory approval (Honda Global, Hitachi press releases).

September 2025 -- Astemo agreed to succeed TDK's new-development business for automotive power supply products, including DC-DC converters and onboard chargers for electric vehicles, through an absorption-type company split effective April 1, 2026 (TDK and Astemo press releases).

Frequently asked questions

What does Astemo make?

Astemo makes automotive chassis, braking, steering, powertrain, and driver-assistance systems for cars and motorcycles. Its three business divisions cover vehicle systems (suspension, brakes, steering), electrification (EV motors, inverters, battery control units, e-axles), and motorcycle components. The company serves approximately 70 automobile and motorcycle manufacturers globally.

Who owns Astemo?

Honda Motor Co. holds 61% of Astemo following a December 2025 transaction in which it acquired an additional 21% stake from Hitachi for approximately 152.3 billion yen. JIC Capital holds 20% and Hitachi retains 19%. The company was formed in 2021 through the merger of Hitachi Automotive Systems, Keihin, Showa, and Nissin Kogyo.

What is Astemo's annual revenue?

Astemo reported approximately 2,200 billion yen in revenue for fiscal year 2025 (ended March 2026), equivalent to roughly 12.7 billion euros per the Berylls by AlixPartners Top-100 automotive supplier study, placing it 25th globally. Revenue was essentially flat year on year.

Where is Astemo headquartered?

Astemo is headquartered in Chiyoda Ward, Tokyo, Japan. The company relocated its registered head office from Hitachinaka City, Ibaraki Prefecture to Tokyo on April 1, 2025, concurrent with its name change from Hitachi Astemo. The Americas regional headquarters is in Farmington Hills, Michigan, with a new $95 million campus under development in Wixom, Michigan.

Who are Astemo's customers?

Astemo's named customers include Honda Motor Co. (its majority owner), General Motors, Ford, Nissan, and Volvo. The company serves approximately 70 automobile and motorcycle manufacturers across 26 countries. Honda requires Astemo components across multiple vehicle lines as a related-party supply relationship.

Last verified September 2026. Is this your company? Request a correction.