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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.

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Recently Released

Efficiency technology and cost assessment for U.S. 2025–2030 light-duty vehicles
Analyzes emerging vehicle-efficiency technologies with respect to cost and capacity to lower carbon emissions from passenger cars and light-duty trucks in the 2025–2030 time frame.  
White paper
Lightweighting technology developments
Highlights important innovations and trends in vehicle design technology and lightweighting, many of which were not considered when the 2025 CAFE standards were finalized, but promise to be quite cost-effective.
Briefing
Cross-price elasticities for oils and fats in the U.S. and the EU
Assesses the market linkages between oils and fats commonly used as biodiesel and renewable diesel feedstocks.
Consultant report
 

From the ICCT Blogs

The better path for the US auto industry is more efficiency technology, not less
Strong standards with long regulatory lead-times are pillars of good energy, technology, and industrial policy. Our research suggests that the better path—for technology investments, consumers, and the environment—is to keep driving forward.
Staff Blog
A surprising key to unlocking the electric vehicle market: Utilities
One increasingly important – and perhaps unexpected – leader in the quest to figure things out may be your local electric power utility. Utilities are starting to see how the flexibility of electric vehicles can turn them into an asset for making the grid more efficient and profitable.
Staff Blog
Quibbles over the perfect way to measure black carbon emissions from ships are keeping us from commonsense moves to control them
Without regulation, it’s unlikely that the international maritime shipping sector will voluntarily find ways to cut black carbon emissions, despite the climate benefit. Thus, we need to move on from quibbling about the “perfect” measurement method and start debating the opportunities to cut black carbon control emissions. But we must move quickly. Because the Arctic we’re aiming to protect can’t keep its cool much longer.
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