The automotive manufacturing industry in Ohio plays a pivotal role in the state's economy, showcasing a blend of traditional vehicle production and innovative component manufacturing. Companies establish facilities here to produce everything from entire vehicles to specialized parts like brakes and electrical systems. Beyond conventional combustion engines, there is a notable shift to Electric Vehicles (EVs), reflecting the industry's adaptation to market demands for sustainability. Ohio's strategic central location enhances logistics for auto manufacturers and suppliers, setting the stage for a future focused on advanced technologies and environmentally-friendly practices.


The companies listed predate from 1984 to 2020, featuring a mix from small to large-scale operations. Primarily headquartered across Ohio cities like Anna and Dayton, they engage in activities ranging from complete vehicle assembly to intricate component production. Notably, firms such as Honda of America Mfg. and Ultium Cells LLC specialize in both conventional and electric vehicle solutions, showcasing the industry's evolution and growth potential.


Continue reading to discover prominent automotive manufacturing companies in Ohio.


Top 19 Automotive Manufacturing Companies in Ohio


1. Honda of America Mfg., Inc.

  • Website: ohio.honda.com
  • Ownership type: Private
  • Headquarters: Anna, Ohio, United States (USA)
  • Employee distribution: United States (USA) 95%, Other 5%
  • Founded year: 1982
  • Headcount: 10001+
  • LinkedIn: honda-of-america-mfg.-inc.

Honda of America Mfg., Inc. is an automobile manufacturer based in Anna, Ohio, specializing in the production of vehicles such as the Honda Accord and various Acura models. Founded in 1982, the company has established itself as a key player in the automotive industry, with a strong emphasis on quality and innovation. Honda operates multiple manufacturing facilities in Ohio, including the Marysville Auto Plant, which was the first U.S. plant to produce the Honda Accord. The company employs over 9,500 associates and plays a vital role in the local economy. Honda is also committed to environmental sustainability, implementing initiatives to reduce waste and emissions across its operations. Its dedication to community service and social responsibility further solidifies its standing in the automotive sector.


2. F & P America

  • Website: fandp.com
  • Ownership type: Private
  • Headquarters: Troy, Ohio, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1993
  • Headcount: 501-1000
  • LinkedIn: f-%26-p-america

F & P America Mfg., Inc., based in Troy, Ohio, is a prominent Tier-One international automotive systems supplier. Founded in 1993, the company has carved out a niche in manufacturing high-quality automotive components, including pedal assemblies, subframes, and suspension parts. With a workforce of approximately 900 employees, F & P America operates under stringent quality standards, holding certifications such as IATF-16949 and ISO 14001. Their manufacturing capabilities include stamping, welding, hydroforming, and assembly, which allow them to produce parts that meet the rigorous demands of the automotive industry. F & P America has built strong partnerships with major automotive manufacturers, including Honda and Toyota, showcasing their reliability and commitment to quality. The company is part of the F-Tech family, which has a global presence with 19 locations worldwide, further enhancing its operational capacity and market reach.


3. Hfi

  • Website: hfi-inc.com
  • Ownership type: Private
  • Headquarters: Canal Winchester, Ohio, United States (USA)
  • Employee distribution: Mexico 57%, United States (USA) 42%
  • Latest funding: January 2006
  • Founded year: 1954
  • Headcount: 1001-5000
  • LinkedIn: hfi-llc-

HFI, Inc. is an automotive parts manufacturer based in Canal Winchester, Ohio, specializing in interior components for vehicles. Established in 1954, originally as the House of Foam, HFI has evolved to focus on producing high-quality soft trim products that enhance vehicle comfort and aesthetics. Their product range includes consoles, headrests, door trim, instrument panels, and seat trim, catering to both automotive manufacturers and Tier 1 suppliers. HFI operates multiple facilities across North America, with a significant portion of their workforce located in Mexico. The company prides itself on its innovative Foam-In-Place technology and has a strong commitment to quality, as evidenced by their ISO 9001 certification. HFI has successfully supplied over 25 million headrests to North American vehicles in recent years, showcasing their operational scale and industry impact.


4. Neaton Auto Products, Mfg, Inc.

  • Website: neaton.com
  • Ownership type: Private
  • Headquarters: Eaton, Ohio, United States (USA)
  • Employee distribution: United States (USA) 95%, Mexico 5%
  • Founded year: 1984
  • Headcount: 501-1000
  • LinkedIn: neaton-auto-products-mfg.-inc.

Neaton Auto Products, Mfg, Inc. is an automotive parts manufacturer based in Eaton, Ohio, specializing in high-quality plastic products tailored for the automotive industry. Established in 1984, Neaton serves original equipment manufacturers (OEMs) by providing essential components such as safety products and interior/exterior trim parts. The company operates multiple manufacturing facilities, including locations in Georgia and Mexico, to effectively meet customer demands. Neaton emphasizes innovation and quality, investing in advanced manufacturing processes like injection molding, reaction injection molding, and automated assembly. Their strong research and development capabilities support the design and testing of products that adhere to stringent industry standards. Neaton's commitment to quality and safety has allowed them to build lasting relationships with their customers, contributing to their ongoing relevance in the automotive supply chain.


5. American Fine Sinter

  • Website: afsus.com
  • Ownership type: Private
  • Headquarters: Tiffin, Ohio, United States (USA)
  • Founded year: 2001
  • Headcount: 201-500
  • LinkedIn: american-fine-sinter

American Fine Sinter, based in Tiffin, Ohio, is a private manufacturer established in 2001. The company specializes in automotive components, focusing on internal engine, transmission, and vehicle suspension parts. They cater to some of the world's largest automotive manufacturers and parts suppliers, emphasizing high-quality production and innovative technologies. AFS has received numerous awards for its commitment to quality and environmental responsibility. The company actively explores new technologies and methods to enhance its production capabilities, aiming to maintain its reputation as a reliable producer in the automotive sector. AFS is also recognized for its dedication to employee welfare and community engagement, making it a respected employer in Northwest Ohio.


6. Jefferson Industries Corp

  • Website: jic-ohio.com
  • Ownership type: Private
  • Headquarters: West Jefferson, Ohio, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1988
  • Headcount: 501-1000
  • LinkedIn: jefferson-industries-inc

Jefferson Industries Corporation, based in West Jefferson, Ohio, is an automotive manufacturer that specializes in producing body frame and transmission components. Established in 1988, the company has built a reputation for high-quality, custom-designed components tailored to the needs of automotive manufacturers. Jefferson Industries emphasizes safety and quality, adhering to global standards such as ISO 9001 and IATF 16949. They invest in modern technologies to enhance manufacturing efficiency and maintain a commitment to environmentally-friendly processes. As the North American headquarters for G-TEKT Corporation, Jefferson Industries plays an active role in the global automotive industry, offering design and development services for press dies and other tools necessary for automotive production. Their operational strategies include a focus on safety, quality, cost efficiency, and timely delivery, which are critical in meeting the demands of their clients.


7. Bwi Group

  • Website: bwigroup.com
  • Ownership type: Venture Capital
  • Headquarters: Dayton, Ohio, United States (USA)
  • Employee distribution: Poland 33%, United States (USA) 22%, Mexico 20%, Other 25%
  • Latest funding: Series A, $1.4M, November 2019
  • Founded year: 2009
  • Headcount: 1001-5000
  • LinkedIn: bwi-group

BWI Group, founded in 2009 and based in Dayton, Ohio, is an automotive parts manufacturer that specializes in brake and suspension systems. The company provides innovative solutions to automotive, motorcycle, and specialty vehicle manufacturers, enhancing vehicle performance and safety. With a workforce of approximately 1,750 employees, BWI Group operates globally, with significant manufacturing facilities in Poland, the United States, Mexico, China, and Italy. Their product offerings include advanced technologies such as brake-by-wire systems and active suspension solutions, which are crucial for modern vehicles, especially those integrating autonomous driving features. BWI Group's focus on sustainability and smart mobility solutions reflects their commitment to meeting the evolving demands of the automotive industry. In November 2019, they secured Series A funding, amounting to over $1.4 million, which supports their growth initiatives and innovation strategies.


8. Newman Technology Inc. NTI

  • Website: newmantech.com
  • Ownership type: Private
  • Headquarters: Mansfield, Ohio, United States (USA)
  • Employee distribution: United States (USA) 86%, Mexico 14%
  • Founded year: 1987
  • Headcount: 501-1000
  • LinkedIn: newman-technology-inc.-nti

Newman Technology Inc. NTI, based in Mansfield, Ohio, is an automotive parts manufacturer that specializes in high-quality components such as exhaust systems and door sash systems. Established in 1987, the company has built a reputation for providing advanced manufacturing solutions tailored to the design and performance standards of automotive manufacturers. With a workforce of approximately 234 employees and facilities in Ohio, Alabama, South Carolina, and Mexico, NTI leverages cutting-edge technology to enhance efficiency and quality in its production processes. The company is committed to continuous improvement and quality assurance, fulfilling the requirements of ISO/IATF standards and government regulations. Their focus on research and development allows them to shorten product development cycles and introduce innovative products to the marketplace, making them a significant player in the automotive manufacturing sector.


9. KTH Parts Industries Inc.

  • Website: kth.net
  • Ownership type: Private
  • Headquarters: Saint Paris, Ohio, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1984
  • Headcount: 501-1000
  • LinkedIn: kth-parts-industries-inc.

KTH Parts Industries Inc., founded in 1984 and based in Saint Paris, Ohio, is a private automotive parts manufacturer that specializes in high-quality underbody components for vehicles. The company serves a range of automotive manufacturers and original equipment manufacturers (OEMs), providing essential engineering services, logistics, and production capabilities tailored to meet the demands of the automotive industry. With a workforce of over 2,000 skilled associates, KTH is involved in various phases of automotive parts production, including product development, prototyping, and assembly. Their advanced technologies, such as laser welding and robotic simulation, enhance their manufacturing processes, ensuring high-quality outputs. KTH's commitment to innovation and quality has earned them recognition, including the Excellent Launch Award from Toyota Motor North America for their work on the Grand Highlander and Lexus TX assemblies. This accolade reflects their ability to adapt and respond to the evolving needs of the automotive sector, solidifying their position as a reliable supplier in the industry.


10. Stanley Electric U.S. Co., Inc.


Stanley Electric U.S. Co., Inc., founded in 1979, is a manufacturer based in London, Ohio, specializing in automotive lighting and electrical components. The company produces a wide array of products, including headlamps, signal lighting, and rear combination lighting, which are vital for vehicle safety and performance. With over three decades of experience, Stanley Electric U.S. has made significant contributions to the automotive lighting industry, including the development of the world’s first LED high mount lamp. Their commitment to quality and innovation is evident in their continuous efforts to enhance product design and functionality. As part of a global network, Stanley Electric U.S. collaborates with automotive manufacturers to meet the evolving demands of the market, ensuring that their products not only meet safety standards but also align with modern vehicle design trends.


11. Ultium Cells LLC

  • Website: ultiumcell.com
  • Ownership type: Private
  • Headquarters: Warren, Ohio, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Latest funding: Other (Debt), $2.5B, July 2022
  • Founded year: 2020
  • Headcount: 1001-5000
  • LinkedIn: ultium-cells

Ultium Cells LLC, founded in 2020 and based in Warren, Ohio, is a private battery manufacturer focused on producing battery cells for electric vehicles and other industries. The company operates as a joint venture between General Motors and LG Energy Solution, aiming to meet the growing demand for sustainable energy solutions. Ultium Cells is committed to advancing the electric vehicle market by supplying battery cells that support General Motors' electric vehicle assembly capacity in North America. Their manufacturing facilities are designed to implement cutting-edge technology and best practices, ensuring high-quality production. With a workforce of approximately 914 employees, Ultium Cells is actively involved in the automotive sector, providing essential components for various automotive manufacturers and industries that require advanced battery technology. In July 2022, the company secured $2.5 billion in funding, underscoring its growth potential and the increasing importance of battery technology in the automotive landscape.


12. Weastec, Inc.

  • Website: weastec.com
  • Ownership type: Private
  • Headquarters: Hillsboro, Ohio, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1988
  • Headcount: 201-500
  • LinkedIn: weastec-inc.

Weastec, Inc., founded in 1988 and based in Hillsboro, Ohio, is a private company that specializes in the manufacturing of electrical components for the automotive, power equipment, and power sport industries. The company produces a range of essential products, including HMI switches, sensors, and control modules, which are vital for original equipment manufacturers (OEMs) in these sectors. Weastec is dedicated to providing reliable and innovative solutions that meet the evolving needs of the automotive market. As a subsidiary of Toyodenso, Weastec benefits from a strong parent company with a global presence, allowing it to leverage advanced technology and manufacturing practices. The company has established a technical center in Dublin, Ohio, to enhance its research and development capabilities, ensuring it stays at the forefront of industry advancements. Weastec's commitment to quality and innovation positions it as a significant player in the automotive components market.


13. ADVICS North America, Inc.

  • Website: advics-na.com
  • Ownership type: Private
  • Headquarters: Lebanon, Ohio, United States (USA)
  • Employee distribution: United States (USA) 85%, Mexico 9%, Brazil 3%, Other 3%
  • Founded year: 2002
  • Headcount: 1001-5000
  • LinkedIn: advics-na

ADVICS North America, Inc., founded in 2002 and based in Lebanon, Ohio, specializes in the manufacturing of automotive brake systems and components. The company produces a range of products, including anti-lock brake systems, electronic stability control systems, and various brake components. With a workforce of approximately 1,000 to 5,000 employees, ADVICS operates multiple manufacturing facilities across North America, including locations in Georgia, Indiana, and Mexico. The company serves a variety of major automotive manufacturers, ensuring that their products meet stringent safety and performance standards. ADVICS is committed to innovation and quality, continuously integrating new technologies to enhance the reliability and responsiveness of their brake systems. Their focus on environmental responsibility is evident in their efforts to reduce CO2 emissions through advanced braking technologies. As a subsidiary of ADVICS Co., Ltd., the company leverages a global network for development and production, positioning itself as a significant player in the automotive parts manufacturing sector.


14. ADVICS Manufacturing Ohio, Inc.

  • Website: advics-ohio.com
  • Ownership type: Private
  • Headquarters: Lebanon, Ohio, United States (USA)
  • Employee distribution: United States (USA) 89%, Lebanon 8%, Mexico 3%
  • Founded year: 1989
  • Headcount: 501-1000
  • LinkedIn: advics-manufacturing-ohio-inc-

ADVICS Manufacturing Ohio, Inc. is an automotive manufacturer based in Lebanon, Ohio, established in 1989. The company specializes in the production of brake components, including disc brake calipers and electronic stability control units, which are vital for enhancing vehicle safety. With a workforce of over 900 dedicated employees, ADVICS has expanded its operations significantly since its inception, now producing components for more than 20 different vehicle models. The company is an original equipment manufacturer (OEM) supplier, providing high-quality products to major automotive manufacturers such as Toyota, Chrysler, Ford, Mazda, and Nissan. ADVICS is committed to continuous improvement in its processes and products, ensuring that it meets the safety-sensitive demands of the automotive industry. Additionally, the company is actively involved in its local community, participating in various charitable events and initiatives, which reflects its dedication to social responsibility.


15. Celina Aluminum Precision Technology


Celina Aluminum Precision Technology Inc. (CAPT), based in Celina, Ohio, has been a significant player in the automotive manufacturing sector since its establishment in 1963. The company specializes in producing high-quality engine components, particularly for Honda vehicles, utilizing advanced aluminum casting and machining techniques. CAPT's product line includes critical parts such as pistons, cylinder heads, and water passages, which are integral to engine performance. The company prides itself on its commitment to quality and customer satisfaction, ensuring that its manufacturing processes meet stringent industry standards. CAPT is also dedicated to community involvement, actively supporting local initiatives and fostering a positive work environment for its employees. With a clear vision for the future, CAPT aims to solidify its position in the automotive parts industry, particularly in the emerging electric vehicle market.


16. Kosei St. Marys Corporation

  • Website: koseina.com
  • Ownership type: Private
  • Headquarters: Saint Marys, Ohio, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1988
  • Headcount: 201-500
  • LinkedIn: kosei-st.-marys-corporation

Kosei St. Marys Corporation, founded in 1988 and located in Saint Marys, Ohio, is a private company that specializes in the production of cast aluminum wheels and automotive parts. With a workforce of approximately 201-500 employees, Kosei has established itself as a reliable supplier to major automotive manufacturers. The company emphasizes quality and safety in its manufacturing processes, striving to meet industry standards while utilizing advanced technology. Kosei's commitment to continuous improvement is evident in its operational philosophy, which focuses on defect prevention and employee training. Their products are integral to some of the most popular vehicles on the market today, showcasing their relevance in the automotive sector. Kosei St. Marys Corporation operates as a subsidiary of Kosei Aluminum Co., LTD, leveraging both American and Japanese technological expertise to enhance its manufacturing capabilities.


17. Yamada North America, Inc.


Yamada North America, Inc. is an automotive manufacturer based in South Charleston, Ohio, specializing in high-quality automotive parts. Founded in 1988, the company initially operated under the name Yotec, Inc. as a joint venture with American Honda. Over the years, Yamada North America has developed a strong reputation for producing critical components such as oil pumps, water pumps, and steering columns. Their products are integral to the operations of major automotive manufacturers, including Honda and Subaru. The company prides itself on its commitment to quality, which is reflected in its ISO 9002 certification achieved in 1997. Yamada North America actively engages in community relations and has received recognition for its contributions to local initiatives. The company focuses on fostering a positive work environment, emphasizing employee development and satisfaction.


18. Yachiyo of America Inc.

  • Website: yachiyo-of-america.com
  • Ownership type: Private
  • Headquarters: Columbus, Ohio, United States (USA)
  • Employee distribution: United States (USA) 96%, Brazil 4%
  • Founded year: 1997
  • Headcount: 51-200
  • LinkedIn: yachiyo-of-america-inc

Yachiyo of America Inc., established in 1997 and based in Columbus, Ohio, is an automotive parts manufacturer that specializes in the design and production of plastic fuel tanks and sunroofs. The company operates as a Tier 1 supplier, directly serving major automotive manufacturers with high-quality components that adhere to stringent safety and performance standards. Yachiyo emphasizes innovation and customer satisfaction, continuously improving its processes to meet the evolving needs of the automotive industry. With multiple facilities across North America, Yachiyo is well-positioned to support its clients effectively. The company is part of a larger global network, with its parent company, Yachiyo Industry Co., Ltd., having a rich history in automotive manufacturing since its inception in Japan in 1947. Yachiyo of America is committed to maintaining a safe and efficient work environment while striving to be recognized for its superior quality and economical products.


19. Acoust-A-Fiber, Inc.

  • Website: mwaaf.com
  • Ownership type: Private
  • Headquarters: Delaware, Ohio, United States (USA)
  • Employee distribution: United States (USA) 52%, Mexico 48%
  • Founded year: 1979
  • Headcount: 501-1000
  • LinkedIn: acoust-a-fiber

Acoust-A-Fiber, Inc., based in Delaware, Ohio, has been a significant player in the automotive manufacturing sector since its founding in 1979. The company specializes in engineered acoustical products and thermal management solutions tailored for both light vehicles and heavy trucks. With a workforce of around 145 employees, Acoust-A-Fiber utilizes a variety of materials, including fiberglass, foam, and metals, to create high-quality products that enhance vehicle comfort and efficiency. Their offerings include noise reduction solutions, thermal protection products, and custom designs for heat shields, all aimed at meeting the specific performance standards of their automotive clients. The company has established itself as a reliable partner for major manufacturers, shipping products across North America and beyond. Acoust-A-Fiber's commitment to innovation and quality has earned them recognition in the industry, making them a noteworthy entity in the automotive manufacturing landscape.



Automotive Manufacturing Insights: Key Companies in Ohio


CompanyHeadquarterSizeFoundedOwnership
Honda of America Mfg., Inc.Anna, Ohio, United States (USA)10001+1982Private
F & P AmericaTroy, Ohio, United States (USA)501-10001993Private
HfiCanal Winchester, Ohio, United States (USA)1001-50001954Private
Neaton Auto Products, Mfg, Inc.Eaton, Ohio, United States (USA)501-10001984Private
American Fine SinterTiffin, Ohio, United States (USA)201-5002001Private
Jefferson Industries CorpWest Jefferson, Ohio, United States (USA)501-10001988Private
Bwi GroupDayton, Ohio, United States (USA)1001-50002009Venture Capital
Newman Technology Inc. NTIMansfield, Ohio, United States (USA)501-10001987Private
KTH Parts Industries Inc.Saint Paris, Ohio, United States (USA)501-10001984Private
Stanley Electric U.S. Co., Inc.London, Ohio, United States (USA)1001-50001979Private
Ultium Cells LLCWarren, Ohio, United States (USA)1001-50002020Private
Weastec, Inc.Hillsboro, Ohio, United States (USA)201-5001988Private
ADVICS North America, Inc.Lebanon, Ohio, United States (USA)1001-50002002Private
ADVICS Manufacturing Ohio, Inc.Lebanon, Ohio, United States (USA)501-10001989Private
Celina Aluminum Precision TechnologyCelina, Ohio, United States (USA)201-5001963Private
Kosei St. Marys CorporationSaint Marys, Ohio, United States (USA)201-5001988Private
Yamada North America, Inc.South Charleston, Ohio, United States (USA)201-5001988Private
Yachiyo of America Inc.Columbus, Ohio, United States (USA)51-2001997Private
Acoust-A-Fiber, Inc.Delaware, Ohio, United States (USA)501-10001979Private


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