Estimating Policy Impacts



The International Energy Agency has developed the simulation tool below to assists users in setting sound auto fuel economy targets by helping to estimate the impact of fuel economy policies.

The Fuel Economy Policies lmpact Tool (FEPIt) builds on the data gathered for the national auto fuel economy baseline, basing its projections on the latest trends of the average fuel economy of all newly registered vehicles (both new and second hand) and on the auto market structure.

By using auto registration data and a fuel economy target, FEPIt calculates what a set of fuel economy policies (and their level of ambition) can deliver in terms of average auto fuel economy in the future.

In addition to modelling the level of ambition of a potential standard, FEPIt may also be useful in negotiations with vehicle manufacturers and importers, and in establishing a graduated fuel economy policy package that can meet long-term targets.


The information contained on this website is intended as practical guidance coupled with examples of auto fuel economy policies and approaches in use around the world. It is not a complete collection of all national examples, nor does it track national and global progress on improving auto fuel economy. It is a work in progress and is updated regularly.This website does not support IE 5 and below.


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