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How well are governments enforcing vehicle emissions standards? Worldwide, the answer is: Not as well as they could be

New survey-based study shows notable disparities in compliance activities, accomplishments among most important global vehicle markets Washington DC—A new study cataloging and evaluating the efforts...
Published 2017.11.14: News

DO Wales 2016

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Published 2017.06.29: Event

Impacts and mitigation of excess diesel NOx emissions in 11 major vehicle markets

A new study published online May 15 in the journal Nature quantifies the global health and environmental burden of real-world diesel NOx emissions in 11 major vehicle markets. The study found that...
Published 2017.05.22: Event

Improving emission standards compliance with a defect reporting system for in-use passenger vehicles

An emission control defect reporting program is used in California to improve compliance with passenger vehicle emission standards. The defect reporting program was adopted by the California Air...
Published 2016.07.19: Publication

First look: Results of the German transport ministry's post-VW vehicle testing

In September 2015, shortly after it became known that Volkswagen applied illegal defeat devices in some of its diesel vehicles, the German Ministry for Transport (BMVI) commissioned a series of...Germany, the UK, and France last week released results of testing they commenced after VW admitted to using defeat devices to circumvent emissions tests. The situation seems even worse than expected...
Published 2016.04.25: Blog Post

Defeat devices under the U.S. and EU passenger vehicle emissions testing regulations

The paper aims to illuminate a paradox: Volkswagen and other automakers have asserted that software managing the emissions control systems on some of their vehicles, which they acknowledge either is...
Published 2016.03.22: Publication

The future of vehicle emissions testing in Europe (and beyond)

At the ICCT we have been analyzing the growing gap between official and real-world vehicle fuel consumption and CO2 emissions of passenger cars in Europe for a few years now. We showed for the first...To solve the problem underlying the growing gap between certification-test and in-use CO2 and NOx emissions, we will have to go beyond just introducing a new test procedure.
Published 2015.11.23: Blog Post

The miseducation of the diesel car

I recently read an open letter in the Corriere della Sera by a VW engineer working on engine development and emissions (that’s what I call a hot seat!). The letter contains some pretty remarkable...The preliminary agreement on the EU's Real-Driving Emissions regulation is a missed opportunity to address the air-quality problem by forcing the technological adjustments required to bring real...
Published 2015.11.04: Blog Post

Brazil is not ready for diesel cars

The Portuguese version of this blog was developed by Instituto de Energia e Meio Ambiente (IEMA). Sales of diesel passenger cars and commercial vehicles with capacity inferior to 1,000 kg have been...Brazil should hold the line and continue to ban sales of diesel passenger cars.
Published 2015.09.28: Blog Post

Testing the dirty diesels too

The new head of Secretariat of the Environment and Natural Resources (SEMARNAT), Rafeal Pacchiano Alamán, has announced that Mexico will undertake a real-world, in-use testing program for diesel...Mexico's newly announced real-world testing program for diesel vehicles is a great step. Unfortunately, we already know they won’t be clean. So there are other steps to take.
Published 2015.09.28: Blog Post

Technical training workshop on light-duty vehicle regulations

Taller de Capacitación Técnica en materia de regulaciones para vehículos ligeros  Organizado por el Centro Mexicano de Derecho Ambiental (CEMDA) en colaboración con el International Council on Clean...
Published 2015.04.23: Event

Want to help China's smog problem? Some lessons learned from the U.S. Clean Air Act

Over the past two weeks, former CCTV reporter Chai Jing’s documentary “Under the Dome – Investigating China’s Smog” caused a sensation in China and the rest of the world. We were (naturally)...China is in the process of amending its Clean Air Law. Experience with the CAA highlights some key principles that can help give environmental agencies the teeth they need.
Published 2015.03.13: Blog Post

Which vehicle emissions test cycle is most demanding?

After we published our new test cycle conversion factors, a question came up: which of the test cycles is the most demanding, in terms of its impacts on fuel efficiency or CO2 emissions, and how much...Even though it’s a simple enough question, it has no simple answer, since the new conversion factors vary with vehicle efficiency and are different for gasoline and diesel engines. However, in our...
Published 2015.02.06: Blog Post

[Pressemitteilung] Reale Emissionen moderner Diesel-Autos sieben Mal höher als gesetzlich erlaubt

Die realen Stickoxidemissionen moderner Diesel-Pkw liegen durchschnittlich sieben Mal höher als laut der seit September 2014 geltenden Abgasnorm Euro 6 erlaubt. Zu dieser Schlussfolgerung gelangt...
Published 2014.10.11: News

A trend that can’t continue: The gap between official and real CO2 reductions from Europe’s passenger car fleet keeps growing

Our report last year documenting the worsening gap between official, test-based CO2 emissions from Europe’s passenger cars and what drivers actually experience on the road received a lot of attention...We've just released an update to our study of the discrepancy between offiical and real-world CO2 emissions from passenger cars in the EU. The bad news: the gap continues to increase, and at an...
Published 2014.09.28: Blog Post

The 4th Sino-US Workshop on Motor Vehicle Pollution Prevention and Control

On June 9-10, 2014, the International Council on Clean Transportation (ICCT) and the Vehicle Emission Control Center of the Ministry of Environmental Protection (VECC-MEP) co-sponsored the 4th Sino-...
Published 2014.06.30: Event

भारत में वाहनीय प्रदूषण को नियन्त्रण में लाना अनिवार्य

प्रेस विज्ञाप्ति, 7 नवम्बर 2013   जल्द से जल्द अतिनिम्न सल्फर ईंधनों और भारत प्रक्रम (बी.एस.) VI वाहनीय उत्सर्जन मानकों को लागू करने से वायु प्रदूषण प्रभावशाली तरीके से कम होगा, जिससे जनस्वास्थ्य को...
Published 2013.11.08: News

India's vehicle emissions control program

Rising transportation activity—the ever-increasing demand to move more people and goods further and faster—is both a cause and an effect of India’s rapid economic growth. As necessary as the increase...
Published 2013.11.05: Publication

Cleaning up a General Mess

A couple of weeks ago, news came out in India that General Motors’ Tavera SUVs had not been meeting emission standards since 2005. It seems that certain GM employees kept special “lower emission”...GM has had to recall more than 100,000 of its Tavera SUVs, suspend production of other models, and fire a raft of executives in the U.S. and India. A simple in-use compliance testing program could...
Published 2013.08.16: Blog Post

EU consumer organizations asking for more realistic vehicle testing

CO2 emission values for type approval of new cars are determined under laboratory conditions. But real-world driving cannot be perfectly simulated in the laboratory; for example, in laboratory...BEUC, FIA, and ANEC are demanding that the European Commission address the growing gap between type-approval and real-world CO2 emissions and fuel consumption.
Published 2012.12.14: Blog Post