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U.S. fuel economy trends reflect a business strategy, not a technology challenge

The Environmental Protection Agency recently released its 1975-2017 Fuel Economy Trends report and its 2016 Manufacturer Performance report. For the last year or two the auto manufacturers have been...The next time somebody cries crocodile tears about how sales trends show the automakers struggling to meet the fuel economy targets and falling behind despite their best efforts, tell them you want...
Published 2018.01.19: Blog Post

Scott Pruitt’s EPA wants to resurrect the dirty diesel

Can’t get enough of zombie movies? Well, get ready for a real-life version. Scott Pruitt’s EPA is bringing the oldest and dirtiest diesel engines back from the dead—but disguising them in a shiny new...Additional NOx emissions from gliders under the Pruitt proposal would be 13 times what the impact of the Volkswagen fraud in the U.S. would have been had it gone undetected.
Published 2017.12.01: Blog Post

Glider industry petition in support of glider trucks debunks itself

It's not the most important or even the worst thing about the Pruitt EPA's proposal to reverse course on closing a loophole in the emissions regulations for heavy-duty vehicles that left "gliders"—...The summary of a "study" that the glider industry used to support its claim that EPA was wrong about how dirty gliders are is fingernails-on-a-chalkboard aggravating.
Published 2017.11.29: Blog Post

Zero emission buses are worth reaching for, but emission performance standards are the low-hanging fruit

Sales of battery electric buses (BEBs) are surging in major cities around the world. Los Angeles, California committed to shift its 2,200 bus fleet to zero-emission buses (including BEBs) by 2030,...Sales of battery electric buses are surging, yet a complete technology transition won't happen overnight. Meanwhile, tightening emission standards on conventionally powered buses would have immediate...
Published 2017.11.16: Blog Post

Will the future RDE regulation be enough to restore trust in diesel technology?

The Volkswagen Group (including Audi and Porsche), Opel, Fiat, Renault, and now Daimler are recalling millions of diesel vehicles for a software update. All of these manufacturers claim their...The success of the RDE regulation will depend on the will of manufacturers to prove that they have learned a lesson from Dieselgate by beginning to focus on reducing real-world emissions, not just on...
Published 2017.08.30: Blog Post

Vehicle and fuel standards can dramatically reduce air pollution in Brazil, São Paulo’s air quality data demonstrate

São Paulo’s Environmental Agency, CETESB, announced in February 2017 that new heavy-duty vehicle emissions standards will take effect in Brazil starting in 2019, and as we discussed here, the next...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-...
Published 2017.05.31: Blog Post

Euro VI para o Brasil: um caminho claro para céus mais limpos

English version Em fevereiro deste ano, a CETESB anunciou novas fases para os padrões de emissões veiculares, começando com veículos pesados em 2019 e motocicletas em 2020. Padrões para veículos...Em Fevereiro, a CETESB anunciou novas fases para emissões de veículos pesados, leves e motocicletas no Brasil. Esse é um momento oportuno para salientar os grandes benefícios para o Brasil com um...
Published 2017.04.14: Blog Post

Euro VI for Brazil: A clear path for cleaner skies

Versão em Português In early February, CETESB, São Paulo’s Environmental Agency, announced new phases for Brazil’s vehicle emission standards, starting with heavy-duty vehicles (HDVs) in 2019 and...In early February, CETESB announced new phases for Brazil’s vehicle emission standards for HDVs, LDVs, and motorcycles. This is an opportune moment, then, to highlight the significant benefits that...
Published 2017.03.13: Blog Post

Brazil’s vehicle fleet renewal program should aim to benefit from others' successes, and their mistakes

As Brazil’s economic crisis drags on, the Ministry of Development, Industry and Foreign Trade (MDIC) has begun to talk up a road vehicle scrappage program as a means of stimulating production in the...Explains why first-phase fleet renewal program in Brazil could be most effective if it focused on removing old diesel heavy trucks and buses from the roads, in particular those older than 14 years...
Published 2016.11.10: Blog Post

Leapfrogging an outdated standard puts India on par with global leaders in control of vehicle emissions

On September 16, 2016 the Government of India took an important step towards addressing the country’s severe air pollution problems with the final notification of Bharat Stage (BS) VI emission...The adoption of Bharat Stage VI emission standards will significantly reduce air pollutant emissions from vehicles sold in India beginning in 2020. However, changes in the final rule notification...
Published 2016.10.11: Blog Post

The power of vehicle taxation schemes

In an earlier blog post, I wrote about the current vehicle market structure in Turkey and also mentioned that purchasing and owning a vehicle in Turkey is quite expensive, mainly due to the high...Changing the vehicle taxation scheme in Turkey from one based on engine displacement to one that uses CO2 emissions as the underlying metric would help to overcome the current market hurdle for low-...
Published 2016.08.18: Blog Post

Common ground on clean transportation

On June 29, 2016, President Obama, President Peña Nieto, and Prime Minister Trudeau laid out a formidable shared agenda at the North American Leaders’ Summit on a disparate set of issues that ranged...Aligning standards throughout North America allows the U.S., Mexico, and Canada to take advantage of the economic and market integration of the region to meet shared goals for climate, air quality...
Published 2016.07.14: Blog Post

China's latest step forward on vehicle emissions regulation

On June 6–7, the Eighth Round of the U.S.–China Strategic and Economic Dialogue was held in Beijing. The two nations are making remarkable progress toward reducing the environmental and energy impact...The newly announced implementation timeline of the China 6/VI vehicle emission standard will accelerate the introduction of the most stringent emission reduction requirements and advanced emission...
Published 2016.07.11: Blog Post

Just one more diesel car?

As the debate over local air quality intensifies in Delhi, the Supreme Court of India is considering whether to continue the restriction on sale of diesel cars with engines larger than two liters in...Another possible option beyond levying a punitive fee on diesel vehicles or banning their sale would be for diesel vehicle manufacturers to voluntarily agree to equip all new diesel vehicles sold in...
Published 2016.05.27: Blog Post

Should Delhi ban diesels?

Next week the verdict will be in on whether Delhi Chief Minister Arvind Kejriwal achieved any meaningful reductions in vehicle emissions with his “odd-even” scheme to cut down on the number of...The health evidence on diesels justifies actions that extend restrictions on diesels until they are cleaner. The court should consider a new tax scheme on diesels to pay for their health damages or...
Published 2016.04.29: Blog Post

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

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

What EU cars’ CO2 emissions have in common with supermarket prices

When you think back to your most recent stop at the supermarket, you will probably recall that most of the price tags you saw ended with the digit "9". Maybe 99 cents for a chocolate bar and 49 cents...It’s about 15 times more likely that the official CO2 emission level of a new car sold in the EU is something-"9" g/km than something-"1”. And there’s a remarkable correlation between that phenomenon...
Published 2015.10.14: Blog Post

Dispelling some myths about the gap between test-lab and real-world vehicle CO2 emissions

We've just released the annual update to our From Laboratory to Road series, which documents the growing gap between official, or type-approval, CO2 emissions from passenger cars in Europe and their...An explanation of what has and has not caused the gap between test-lab and real-world vehicle CO2 emissions to increase by over 30 percentage points in just over a decade.
Published 2015.09.30: Blog Post