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New Emissions Analytics study suggests pollution from tire wear now 1,850 times worse than exhaust emissions

Green Car Congress

In early 2020, UK-based independent testing firm Emissions Analytics published a study claiming that tire particulate wear emissions were 1,000 times worse than exhaust emissions ( earlier post ). As a result, distance-specific mass and number emissions can be derived, which can then be compared to equivalent tire metrics.

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Daimler balks at use of low GWP R-1234yf refrigerant, citing new internal safety findings; wants to continue using R-134a

Green Car Congress

Daimler announced that findings from a new internal investigation have raised questions on the safe usage of R-1234yf as a replacement refrigerant in mobile air conditioning (MAC) systems. This was determined by numerous laboratory and crash tests carried out by international vehicle manufacturers and independent institutions.

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US charges Audi manager with conspiracy to cheat US emissions tests; sacrificing NOx control for a sound system

Green Car Congress

According to the complaint, from in or about 2006 until in or about November 2015, Pamio led a team of engineers responsible for designing emissions control systems to meet emissions standards, including for nitrogen oxides (NO x ), for diesel vehicles in the US. Beginning in or about 2006, Audi was designing the new 3.0

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ICCT study concludes no technical barriers to use of higher blends of ethanol

Green Car Congress

The consumption scenarios are technically achievable but do not reflect significant barriers such as cost, regulation, legality, and consumer acceptance. A team at the International Council on Clean Transportation (ICCT) has released a paper assessing technical barriers to the use of higher blends of ethanol. Source: ICCT.

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EV myths busted: Are electric vehicles safer than gas-powered cars?

Drive Electric

We investigated some of the most common questions and concerns about the dangers of owning and driving an EV and how they compare to internal combustion engine vehicles (ICEVs) in terms of safety. Useful terms: Internal Combustion Engine Vehicle (ICEV) and Electric Vehicle (EV). Here’s what we discovered.

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Flash Drive: 2025 Hyundai Ioniq 5 N

Clean Fleet Report

The Ioniq 5 N blurs the traditional look of a crossover and hatchback, so-much-so that we are calling it a hatchback, while Hyundai has entered it as a crossover in the Pikes Peak International Hill Climb , which takes place June 23, 2024, in Colorado Springs, Colorado. A blur in many ways What Is N?

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EPA and California ARB charge Volkswagen with using software defeat device to circumvent NOx testing in 4-cylinder 2.0L diesels

Green Car Congress

The alleged violations do not present a safety hazard; the cars remain legal to drive and resell. Only then did VW admit it had designed and installed a defeat device in these vehicles in the form of a sophisticated software algorithm that detected when a vehicle was undergoing emissions testing. Passat (Model Years 2014-2015).

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