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 Fuel Economy State of the World 2016


The GFEI launched its Annual Report entitled ‘Fuel Economy State of the World 2016: Time for Global Action’ in late 2015.

The report reviews the recent progress and remaining challenges in fuel economy and highlights the new developments, trends, and examples of progress that the GFEI has helped to bring about.

Download 'Fuel Economy State of the World 2016' here

Launch of State of the World report

Can we achieve 100 million plug-in cars by 2030?


The report (Working Paper 13) explores recent trends in the market penetration of plug-in electric vehicles (PEVs), and the implications for achieving 100 million PEV sales by 2030, the ambition set by the Paris Declaration on Electro-Mobility.



Pierpaolo Cazzola of IEA launched GFEI’s new in-depth fuel economy research at the International Transport Forum in Leipzig in May 2016

The report (Working Paper 12) investigates the development of fuel consumption and other light-duty vehicle (LDV) characteristics (vehicle dimensions, weight, and technical parameters such as fuel type, engine power and displacement) for new vehicle registrations from 2005 to 2013 for more than 20 countries. This analysis provides insights on the drivers that influenced this evolution, such as the influence of the policy context (e.g. the presence of fuel economy regulations, vehicle and fuel taxation schemes) and average national income level.

Working Papers

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

Latest Research into Fuel Economy Trends

WP11 IEA Report

GFEI showcased its latest research into the fuel economy of light duty vehicles in January at the annual Transport Research Board conference in Washington DC.

Alex Körner of IEA summarised the main findings of GFEI Working Paper 11, which shows that average fuel economy of new light duty vehicles improved by 2% per year globally between 2005 and 2013. This rate is below the 2.7% rate needed to halve emissions by 2030, and has been slowing in recent years. The slowdown is mainly due to rising sales in non-OECD countries, where the rate of fuel economy improvements has been lower. The research argues for non-OECD countries to introduce improved fuel economy regulations, as some have started to, and ongoing monitoring.



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.