Montage in three panels. Left: Side and wheel of black car racing down road with green trees. Center: Multi-colored drop icon with words underneath, “Better Fuels. Better Engines. Sooner.” Right: Biorefinery plant silhouetted against orange and purple sun

While vehicles with more efficient and sophisticated engines are hitting the road in ever-greater numbers, their performance is limited by the properties of today’s conventional fuels. Researchers with the U.S. Department of Energy Co-Optimization of Fuels & Engines (Co-Optima) initiative are exploring how simultaneous innovations in fuels and engines can boost fuel economy and vehicle performance, while reducing emissions—advancing the underlying science needed to deliver better fuels and better engines sooner.

Learn more about Co-Optima research and tools and data, browse the latest news and publications, view webinars, or download the fact sheet for an overview of the initiative.


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Co-Optima Research

Learn more about Co-Optima research targets.

Co-Optima Tools and Data

Learn more about Co-Optima tools and data.

Co-Optima News

Read news about the Co-Optima initiative.

Co-Optima Publications

Find select Co-Optima Publications.

Co-Optima Partners

Learn more about Co-Optima national
laboratory partners.

The Co-Optima team views fuels not as standalone elements in the transportation system, but as dynamic design variables that can work with modern engines to optimize and revolutionize the entire on-road fleet, from light-duty passenger cars to heavy-duty freight trucks. Top scientists, engineers, and analysts from national laboratories, universities, and industry are collaborating on this first-of-its-kind effort to combine biofuels and combustion research and development.

Building on decades of advances in fuels and engines, the Co-Optima initiative’s three-pronged, integrated approach is providing American industry with the scientific underpinnings needed to identify and develop:

  • Engines designed to run more efficiently on affordable, scalable, and sustainable fuels
  • Fuels designed to enable high-efficiency, low-emission engines
  • Strategies that can shape the success of new fuels and vehicle technologies with industry and consumers.

Program Contacts

For more information on the Co-Optima initiative and related partnership opportunities, contact the project leadership team.