Several studies have found that taxing vehicle purchase or ownership on the basis of carbon dioxide (CO2) emissions reduces CO2 emissions.

The Global Fuel Economy Initiative has launched a ground-breaking new report which provides a first estimate for the fuel efficiency potential of HDVs in different markets.

Thousands of models are 30% worse on average when measuring miles per gallon in real-world conditions, according to comprehensive new data

Despite entering his last term, President Obama has revealed that there is "still much more to do" in his effort to combat climate change, as new plans to release a second round of fuel efficiency

The 2016 International Energy Efficiency Scorecard examines the energy efficiency policies and performance of 23 of the world’s top energy-consuming countries. Together these nations represent 75% of all the energy consumed on the planet and in 2013 accounted for over 80% of the world’s gross domestic product.

Volkswagen (VOWG_p.DE) has agreed a $603 million settlement with dozens of U.S.

Volkswagen AG's (VOWG_p.DE) $15.3 billion settlement of allegations that it cheated on diesel engine pollution tests promises a substantial boost for federal and state efforts to expand electric ve

Japanese automaker Nissan said Monday it is taking South Korea to court in response to Seoul’s claims that it manipulated emissions data on a popular sports utility vehicle.

The transport ministry plans to adopt an internationally standardized method of testing car fuel economy, beginning in 2018.

Over the next five to ten years, passenger vehicle manufacturers will be confronted with regulatory pressure and material penalties as gains in fuel economy fall behind the required rates of improvement set to address environmental preservation and climate change mitigation.

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