Engine Manufactures Association
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About EMA

The Truck and Engine Manufacturers Association (EMA) is a not-for-profit trade association that represents worldwide manufacturers of internal combustion engines and on-highway medium- and heavy-duty vehicles. EMA works with government, industry and other key stakeholders to help the nation achieve its goals of cleaner air and safer highways and to ensure that environmental and safety regulations are technologically feasible and cost-effective.


Our members manufacture internal combustion engines that are used in a wide variety of applications, including:

  • Truck and buses

  • Marine vessels

  • Farm, construction, and industrial equipment

  • Marine vessels

  • Locomotives

  • Lawn, garden and utility equipment, and

  • Electric generators, and other stationary applications


As such, EMAs members not only include manufacturers of medium and heavy-duty vehicles with gross vehicle weight ratings (GVWR) over 10,000 pounds, EMA also now represents those interests.


In 2009, the former Truck Manufacturers Association (TMA) merged into and became a part of EMA. That's when EMA began doing business as the Truck and Engine Manufacturers Association. EMA carries on the legacy activities of the Truck Manufacturers Association through EMA's Heavy-Duty On-Highway Committee and various of its subcommittees.


EMA serves as the voice of its 30 member companies on domestic and international public policy, legislative and regulatory issues. The Association works cooperatively with regulatory agencies, including the US Environmental Protection Agency (EPA), the California Air Resources Board (ARB), the National Highway Transportation Safety Administration (NHTSA), state governments and international regulatory agencies to develop and implement cost-effective and technologically feasible emissions, fuel efficiency and safety regulations that result in fewer emissions, better fuel efficiency, and enhanced safety.


Tracing its roots back to 1968, EMA's members include the leading engine and truck manufacturers from the United States, Europe, and Japan. As a member-driven trade association, the management of EMA is based on a committee structure that includes a Board of Directors composed of a representative from each member company, an Executive Committee appointed by the members to direct and manage EMA activities, and a series of committees that are organized to address major engine and truck product-lines; regulatory activities; fuels, lubricants and coolants activities; environmental and health effects issues; and state and federal legislative and public policy matters. Each committee is comprised of member company representatives.


Association operations are carried out by a staff of professional and administrative personnel who represent and promote EMA positions with various outside organizations and government regulators. EMA is based in Chicago.


EMA also sponsors scientific and technical research to improve engine and truck performance, reduce emissions, improve safety develop more accurate measurement and testing methods, assure the improvement and compatibility of fuels, and to improve the overall performance of advanced engine and truck technologies.


Through research, development, and advocacy, EMA members have successfully worked with government and regulatory agencies to significantly reduce emissions from internal combustion engines to near zero-emission levels.


Engine Manufactures Association

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