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The reductions in passenger vehicle emissions that have been achieved since the mid-twentieth century are a great environmental success story. Government regulation of tailpipe emissions and private investments in breakthrough technologies such as the three-way catalytic converter have reduced emissions of nitrogen oxides, carbon monoxide, and hydrocarbons by 75 to 90 percent at a relatively small cost to consumers. Since California first established emission standards for passenger vehicles in the 1960s, different regulatory approaches have been adopted by the United States, Japan, and Europe, and each has been emulated to some degree in other parts of the world. Significant work remains to replicate these successes throughout the rest of the global fleet.

The massive impact of passenger vehicles on climate also remains to be addressed. The transportation sector is responsible for about one-quarter of energy-related greenhouse gas emissions worldwide. Passenger vehicles account for just under half of this total, and will remain the predominant source of these emissions for the foreseeable future.

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European Vehicle Market Statistics, 2014
Annual statistical portrait of technologies, fuel consumption, and GHG and pollutant emissions in Europe's passenger car, light commercial, and heavy-duty fleets.
Report
Evaluation of state-level U.S. electric vehicle incentives
Introduces a novel methodology to monetize the benefit to consumers of electric vehicle incentives provided by U.S. states, and finds that more battery-electric vehicles are sold in states offering a greater total package of...
White paper
The WLTP: How a new test procedure for cars will affect fuel consumption values in the EU
Identifies and quantifies impacts on type-approval values of the EU's anticipated transition from the NEDC to the WLTP. Notably, the effects of the new driving cycle and the new definition of vehicle test masses result in a...
Working paper
 

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From the ICCT Blogs

More popcorn = More super-credits
The new edition of the EU Vehicle Market Statistics pocketbook is filled with detailed statistics for 2001–2013. For the first time we also include some data on heavy-duty vehicles, and of course some international comparisons as well.
Staff Blog
Will a new test procedure solve the problem? Latest developments on EU vehicle testing
Two recent ICCT reports clearly demonstrate the serious on-road problem for CO2 and NOx emissions in Europe. The European Commission is working on it, but the approaches chosen to address the real-world CO2 and NOx problems differ substantially.
Staff Blog
Will GDI engines mean higher particulate emissions? Thanks to already-enacted Tier 3 standards, no
Concerns that engines using gasoline direct injection produce higher particulate emissions overlook two things: the engineering solutions to the problem are already known, and EPA's Tier 3 regulation, which takes effect in 2017, will require them.
Staff Blog

The Staff

Anup Bandivadekar
Anup Bandivadekar
Program Director / India Lead
John German
John German
Senior Fellow / US Co-Lead
Hui He
Hui He
Senior Policy Analyst / China Co-Lead
Fanta Kamakaté
Fanta Kamakaté
Chief Program Officer
Peter Mock
Peter Mock
Europe Managing Director / EU Lead