where we work / United States


With nearly 250 million light duty vehicles on the road, the United States has the largest vehicle fleet in the world, and annual new vehicle sales second only to China.

Despite its historical role in pioneering vehicle regulations, from the mid-1980s until very recently the U.S. lagged behind other developed nations in passenger vehicle fuel economy standards and emissions regulations (see the global PV standards update), with higher levels of CO2 emissions per mile, higher average fuel consumption, and lower average fuel economy. However, since 2009 the United States has adopted aggressive legislation that could make the country a global leader in fuel efficiency and GHG emissions control. And market demand for fuel-efficient gasoline, hybrid, and electric vehicles is growing.

Featured Work



Recently Released

Integrating electric vehicles within U.S. and European efficiency regulations
Evaluates options for integrating electric vehicles into U.S. and European efficiency regulations based on cost-effectiveness and emission-reduction implications.
Working paper
Update: California's electric vehicle market
Summarizes the status of electric vehicle market in California through 2016, quantifying electric vehicle market growth across California cities and metropolitan areas.
Heavy-duty vehicles technology potential and cost study
Cost-effectiveness and potential analysis of technologies for the reduction of fuel consumption and greenhouse gas emission of heavy-duty vehicles in the European market, in the 2020–2030 timeframe.
Consultant report

From the ICCT Blogs

Designing from scratch: Maximizing aircraft fuel efficiency
Why aren’t we seeing more radically fuel-efficient aircraft, the way we're seeing more efficient cars and trucks? You can get a lot of different answers to that question, depending on who you ask. The result is a series of interviews, which we'll be publishing here over the next few weeks.
Staff Blog
Vehicle and fuel standards can dramatically reduce air pollution in Brazil, São Paulo’s air quality data demonstrate
Implementing P-8 (Euro VI-equivalent) standards for trucks and buses might be the most cost-effective way to improve air quality, not just in São Paulo but nationwide. The benefits associated with P-8 standards outweigh their costs by a ratio of 11 to 1.
Staff Blog
Subsidy fraud leads to reforms for China’s EV market
Policy adjustments, created largely in response to the high-profile subsidy fraud scandal, mark major reforms for China’s EV market. As an old Chinese saying goes, “A loss may turn out to be a gain.” After being struck by this scandal, China’s EV market may find the right path toward a prosperous future.
Staff Blog

The Staff

John German
John German
Senior Fellow / US Co-Lead
Nic Lutsey
Nic Lutsey
Program Director / US Co-Lead
Peter Slowik
Peter Slowik
Associate Researcher