The GFEI brings together some of the leading global experts in the field of fuel economy. The data and research work which we do builds on that expertise and has led to the development of the only global data on fuel economy trends. This material not only adds to the level of global understanding of the issue, but also underpins our advocacy and in-country capacity-building.

All of our publications can be found below.

GFEI COP 23 Update


GFEI’s new ‘COP23 update’ shares progress made since the COP21 Climate Summit in Paris. In particular, it showcases the extensive activities and action that GFEI has catalysed through its ‘100 for 50by50’ initiative. This has led to 40 new countries joining our work, taking the number to over 70. It includes summaries of recent activities in the past year and a progress chart for all the countries where GFEI works.

Download GFEI's new 'COP23 update' here


At TRB 2017, Pierpaolo Cazzola shared GFEI’s latest fuel economy benchmarking study, which examines global progress in improving average fuel economy over the decade from 2005 to 2015. The new report is unique in its scale and comprehensiveness, covering more than 80% of the global vehicle market. It extends and enhances previous research that GFEI has published regularly since 2011 by including a longer time series, an updated in-depth exploration of fuel economy drivers in 17 countries and a new section on trends in vehicle prices globally.

Can we reach 100 million electric cars worldwide by 2030?


Working paper 16 is part 2 of a study of the potential to achieve a particular target of electric and plug-in hybrid vehicle sales worldwide by 2030.

It explores the question ‘Can we reach 100 million electric cars worldwide by 2030?’ using modelling/scenario analysis.

Working Papers

A series of research studies conducted by ourselves and our partners into issues about fuel economy.



In a GFEI Working Paper entitled ‘How vehicle fuel economy improvements can save $2 trillion and help fund a long-term transition to plug-in vehicles’, Lew Fulton of University of California at Davis argued that fuel economy improvements from conventional internal combustion engine cars could save $2 trillion over the next decade, resources which could in part be used to help offset the costs of developing a global market for electric vehicles since the savings are estimated to be at least four times bigger than these costs.