VW Group of North America now owns hundreds of thousands of Volkswagen and Audi TDI diesel vehicles it has bought back from owners under the terms of various diesel emission scandal settlements. Yesterday, it got some very good news: the EPA has approved a modification that will it allow it to resell the oldest and dirtiest of those vehicles... Modifications to oldest, dirtiest VW, Audi TDI diesels approved by EPA
VW Group of North America now owns hundreds of thousands of Volkswagen and Audi TDI diesel vehicles it has bought back from owners under the terms of various diesel emission scandal settlements. Yesterday, it got some very good news: the EPA has approved a modification that will it allow it to resell the oldest and dirtiest of those vehicles... 
As rules to boost fuel economy and lower carbon emissions in vehicles around the world continue to stiffen, acronyms like EREV, CNG, and MPGe are becoming more and more common. Ever wonder what they all mean? This glossary is your chance to enter a veritable Twilight Zone of terminology--and find out, say, whether a PZEV is related to a PHEV... 
California began regulating vehicle emissions within its boundaries before the Environmental Protection Agency was even a gleam in President Richard Nixon's eye. Since that agency was founded in 1971 with an executive order by Nixon, the state has retained the right to set its own—more stringent—emission rules. Now, under President... ![Chevrolet Bolt EV being charged outside Go Forth electric-car showroom, Portland [photo: Forth]](http://images.hgmsites.net/tmb/chevrolet-bolt-ev-being-charged-outside-go-forth-electric-car-showroom-portland-photo-forth_100606247_t.gif)
It's clear that incentives to buy specific cars work best when they can be applied directly at the time of sale. That's why purchase rebates are widely preferred by electric-car advocates to tax credits, which may take up to 15 months to be usable, depending on the timing of the purchase and tax filing. While the federal electric-car incentive is... 
The sales growth of electric cars has made strides in recent years, and California's Zero-Emission Vehicle mandate has more than a little to do with that. The program adopted by the state of California more than 20 years ago, and much modified since then, requires that carmakers sell a certain number of zero-emission models in California and 10... 
It's now clear that the zero-emission vehicles of the future will be powered by electric motors. The electricity to power those motors, however, will come from one of two competing technologies: high-capacity batteries or hydrogen fuel cells. The debate over which technology is superior, which has the lowest wells-to-wheels carbon footprint, and... 
The challenges of building fueling infrastructure for passenger cars powered by hydrogen fuel cells are well known by now. Toyota, Honda, and Hyundai now lease low volumes of fuel-cell vehicles in selected areas of California where a few dozen hydrogen fueling stations are now up and running. The challenges for fueling may be less daunting for... 
The California Air Resources Board voted Friday to confirm its stricter emissions standards for 2025, setting up a potential clash with the Trump Administration. The CARB vote reaffirms a decision by the EPA in the waning days of the Obama Administration to lock in emissions standards for vehicles in model years 2022 through 2025. Under Trump, the... 
California is very different from the rest of the United States. All by itself, it's the sixth largest economy in the world. One eighth of all Americans live there. It's home to Silicon Valley, as well as much of the global entertainment industry, and it produces a large proportion of the nation's fruit and vegetables. DON'T MISS: A Brief History... 
Volkswagen has submitted a plan for electric-charging infrastructure to the U.S. Environmental Protection Agency and the California Air Resources Board. VW's "Electrify America" plan shows how the automaker would spend funds it is required to commit to zero-emission vehicle infrastructure under the terms of a settlement for its diesel-emissions...