While neither vehicle type produces any tailpipe emissions, their overall emissions vary depending on the fuels and processes used to generate electricity or produce hydrogen. emissions hydrogen Study plug-in cars hydrogen fuel cellThere's been considerable debate among advocates of battery-electric and hydrogen fuel-cell cars over which technology is better for the environment. MORE

While automakers work to meet stricter carbon-emissions standards, another sector of the U.S. economy has already made notable progress in reducing ts emissions. Carbon-dioxide (CO2) emissions from electricity generation during the first six months of 2016 were the lowest since 1991, according to the U.S. emissions electric utilities renewable energy solar energy air pollution MORE

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. emissions Politics government EPA California California Air Resources Board CARB transportation policy MORE

A fairly direct way to eliminate air pollution from car exhaust emissions is to simply get rid of the cars themselves. Europe Paris emissions France transportation policyNext month, Paris officials will attempt to do just that. Beginning July 1, all cars registered before 1997 will be banned from the city center on weekdays. DON'T MISS: In Paris, cars compete with other transit modes (and often. MORE

emissions Politics EPA Mark Fields CAFE regulation Corporate Average Fuel Economy Donald TrumpAmong his actions during a whirlwind first week in office, U.S. President Donald Trump met last week with the CEOs of U.S. automakers Fiat Chrysler, Ford, and General Motors. He met on two consecutive days with Mark Fields, CEO of Ford, in fact. Fields was part of a group of manufacturing executives who met with the president separately the day. MORE

The software that allowed Volkswagen diesel cars to cheat on emissions tests was not found by government regulators. Confronted with on-road emission levels far higher than its test results, VW finally. emissions EPA VW software Volkswagen diesel scandalInstead, its effects were discovered by researchers at West Virginia University, working with the International Council on Clean Transportation. MORE

Mayor of Paris and Chair of C40 Cities Anne Hidalgo and Mayor of London Sadiq Khan announced they are working together to create schemes to score new cars based on their real-world emissions and their impact on air quality and to provide that data in an accurate and accessible form to the public. MORE

For 50 years now, California has been at the very forefront of reducing vehicle emissions. emissions EPA California California Air Resources Board CARB Zero Emission Vehicle regulation state lawsIt was doing so before the U.S. Environmental Protection Agency was even formed, and its powerful Air Resources Board has been a vital force in getting plug-in electric vehicles onto the state's roads. Despite the national political currents, the state will. MORE

Environmental Protection Agency (EPA) will soon follow up on previously-discussed plans to set emissions standards for airplanes. The agency previously identified airplane emissions as a threat to human health because of their contribution to climate change, but has not been able to issue actual rules governing those emissions. emissions EPA aircraft transportation policyThe U.S. MORE

But now regulatory agencies in European countries have become caught up in the legal fallout from VW's emissions cheating. Europe emissions lawsuit EU Volkswagen diesel scandalThe Volkswagen diesel scandal has led to numerous lawsuits against the German automaker in multiple countries. The European Union began legal action Thursday against Germany, the U.K., and five other nations. DON'T MISS: Every. MORE

It's a very reasonable question: electric cars themselves have no tailpipe emissions, but what about the power plants used to recharge them? Carbon Footprint emissions Minnesota greenhouse gas electric utilities plug-in carsAfter more than a dozen studies and five-plus years of plug-in car sales, we know the answer. In North America, an electric car charged on even the dirtiest, most coal-intensive electric grid in the nation. MORE

emissions, EVs deliver only a negligible reduction in emissions, the team found. Comparison of the expected total emissions of PM10 for EVs, gasoline ICEVs and diesel ICEVs. EVs are not likely to have a large impact on PM emissions from traffic. MORE

We're just four days into the Volkswagen diesel-emission cheating scandal, but it's not too early to ask about its ultimate ramifications. since 2008, when new and tougher emission limits took effect. emissions future EPA EU VW Group Volkswagen R regulationThe 482,000 VW and Audi cars being investigated by the EPA are a majority of all the diesel passenger cars sold in the U.S. If VW Group's engineers. MORE

Transportation is a major contributor to carbon emissions, but historically it has not been the largest source. carbon emissions. emissions Fuel EconomyHowever, that has apparently changed. Transportation-related sources now account for the largest share of U.S. DON'T MISS: How much do electric cars really pollute, even without tailpipes? Earlier this year. MORE

Justice Department may be planning to file a lawsuit against Fiat Chrysler over allegations that the engines in its light-duty diesel trucks included equipment to defeat Environmental Protection Agency emissions tests. emissions EPA EcoDiesel Ram 1500 EcoDieselThe U.S. MORE

EPA emissions laws on its so-called "clean diesel" models from 2009 to 2015 hit the automotive world like a bombshell on Friday. emissions EPA TDI Golf TDI VW Group Audi A3 TDI Jetta TDI regulation Passat TDI Beetle TDIThe news that Volkswagen had deliberately circumvented U.S. Over the weekend, more news emerged, with a statement and apology from VW Group CEO Martin Winterkorn. The company also took all remaining new 2.0-liter TDI. MORE

The average rate at which CO 2 is emitted from vehicle tailpipes and other mobile sources has exceeded the rate of CO 2 emissions from electric power plants over seven of the past eight months. CO 2 emissions from the transportation sector increased at an average rate of 1.8% MORE

But one carmaker believes that in a decade, Chinese emissions. Green China Fuel Economy Future Cars emissionsChina is the world's largest market for new cars, and it also has some of the world's worst air pollution. Cities have had to limit new-car sales and restrict car use to combat rampant pollution, while the government is aggressively promoting electric cars as a solution to the problem. MORE

The European Commission is set to accept new emissions rules after a protest against their leniency was rejected by lawmakers. Earlier this year, members of the European Parliament had rebuffed a proposal to require on-road emissions testing for new vehicles, because it also allowed carmakers to exceed emissions limits. Green EU Europe Volkswagen diesel scandal emissions transportation policy MORE

In the UK, increasing pressure to reduce the impact of pollution from vehicles has led to growing interest in the introduction of Clean Air Zones and Low Emission Zones. buses, heavy goods vehicles, vans and cars) and their respective contributions to emissions. Emissions Regulations MORE

Stricter global emissions standards may finally force the majority of established automakers to get serious about electric cars. But while automakers build more electric cars to meet emissions standards, the extra cost of developing these new models may eat into profits. emissions energy policy plug-in cars Profit transportation policyThat's the conclusion of a new report from global investment bank Morgan. MORE

The automaker hasn't said just how the Vision Next 100 concept manages to go emission-free, but it did talk a lot about the car's exotic materials and construction. Green Autonomous cars Future Cars zero emissionsBMW is now a century old. To celebrate, the brand has unveiled a concept car that emits nothing from its tailpipe and can drive itself. MORE

CO emissions dropped by 81% and 87%, while CO 2 emissions were reduced by 13 and 17%. Emissions of selected polycyclic aromatic hydrocarbons (PAHs) were lowered by 67–96% with E10 and by 82–96% with E85, and the genotoxic potentials dropped by 72% and 83%, respectively. MORE

The airline industry is responsible for an estimated 2 percent of global carbon emissions, but so far no government has enacted emissions standards for aircraft similar to those in place for cars and trucks in many countries and regions. Even the recent far-reaching Paris climate-change talks included no concrete action on airplane emissions. emissions carbon dioxide aircraft transportation policy MORE

Global efforts to reduce greenhouse-gas emissions may be starting to pay off, suggests a recent study. Last month, scientists released an assessment that suggests global carbon emissions did not increase significantly in 2016. That makes this the third year in a row that carbon emissions have remained flat. Environmental emissions energy policy greenhouse gas climate change carbon dioxide air pollution MORE

Fiat Chrysler Automobiles may have used illegal software emissions controls to pass more than 100,000 trucks and SUVs through emissions testing, the EPA said Thursday. The agency hasn't yet called the software controls "defeat devices," but has asked FCA to explain up to eight auxiliary emissions controls devices on those cars they say help the MORE

European automakers have attacked proposed emissions standards that would place greater restrictions on cars, as well as large commercial vehicles like heavy-duty trucks and buses, as unrealistic. Europe emissions EU Carbon aircraft BoatsIt's not unusual for companies to oppose stricter regulations on their products, but in this case the auto industry's argument has won it an unlikely. MORE

A German government task force discovered a new type of defeat device in Audi vehicles, which allows the cars to cheat emission tests. Just as the Volkswagen Group begins to wind down its diesel scandal in the United States, things may be ramping up in Europe. Both V-6 and V-8 powered Audi A8 diesels—built between 2009 and 2013—were. Diesel cars MORE

As the United Nations COP21 climate-change talks continue in Paris, a group of local and national governments plans drastic reductions in vehicle emissions over the next 35 years. Members of the International ZEV Alliance have committed to making all new cars in their jurisdictions emission-free by 2050. emissions zero emissions California greenhouse gas climate change plug-in cars transportation policy MORE

Battery-electric cars produce no direct carbon emissions from driving, but those are not the only potential source of emissions related to these vehicles. The lifetime carbon emissions of electric cars seem to be the question that launches a thousand studies. Critics of electric cars have suggested that emissions related to their construction are. Green Carbon Footprint Manufacturing Plug-In Hybrids Study UCS emissions plug-in cars MORE

California has long been the nation's leader in zero-emission vehicles, with initiatives dating more than two decades. Now the Golden State is partnering with China, the world's largest car market, to accelerate that country's zero-emission goals. China California hydrogen fuel cell Battery Electric Vehicle (BEV) Zero Emission Vehicle state lawsThe state announced a new initiative with China, in which they will work together to accelerate the. MORE

The most straightforward way to reduce automotive emissions is probably to just get rid of cars. emissions taxi Autonomous cars self-driving carsBut what if you kept the cars, and eliminated their drivers instead? Acolytes of self-driving cars have held up fuel efficiency as one of their potential benefits, although it's hard to quantify the benefits of a technology that remains largely. MORE

One of the major sources of carbon emissions is electricity generation. So what would it take to eliminate carbon emissions entirely from making electricity? emissions Carbon climate change Study electric utilities renewable energy energyIt's an issue that is becoming increasingly important in the automotive sphere, due to the slow rise of plug-in electric cars. DON'T MISS: Bipartisan governors' group urges Trump to back. MORE

Carbon Footprint emissions plug-in cars wells to wheels Union of Concerned ScientistsTransitions into new technologies always generate confusion and misinformation, and certainly that has been the case with modern electric cars. Buyers, automakers, and analysts debate their cost, suitability, real-world range, wells-to-wheels carbon footprint, and recyclability, among other issues. Six years after the first modern electric cars. MORE

Thus far, it's a been a quiet start to the third week of the Volkswagen diesel-emission cheating scandal. emissions EPA TDIEight years' worth of VW TDI models, both new and used, have been taken off sale at the company's North American dealerships. We surmise its engineers are working around the clock at their Wolfsburg headquarters to develop modifications to. MORE

Quebec has become the first Canadian province to adopt a requirement for sales of a certain number of zero-emission vehicles, similar to the one in effect in California. Canada California plug-in cars Zero Emission Vehicle regulation state laws QuebecQuebec's Assemblée Nationale passed the regulation on October 26 by a unanimous vote of 112 to 0, and to universal praise from Canada's electric vehicle community. MORE

California leads the nation in policies that promote reductions of carbon emissions from road vehicles. It is unique in having a federal waiver that allows it to set its own, stricter emissions standards, along with a zero-emission vehicle mandate that requires automakers reaching certain sales volumes to sell a certain number of cars without. emissions zero emissions EPA California California Air Resources Board CARB transportation policy MORE

website, and admitted that 11 diesel million vehicles have software that enabled them to pass emission tests whle emitting 10 to 35 times the permissible U.S. emissions EPA TDI VW Group CAFE regulationThe bad news for Volkswagen just keeps on coming. In the last week, the company has fired much of its upper management, eradicated all mention of its TDI diesels from its U.S. MORE

Because they cover significantly more mileage than the average passenger car, with much worse fuel economy, large commercial trucks are a major source of emissions. emissions Trucks Commercial vehicleLast year, Volvo Trucks aimed to address this issue with a concept truck that demonstrated ways to improve fuel efficiency through aerodynamics and weight reduction. Volvo Trucks sells. MORE

Researchers at West Virginia University have characterized pump-to-wheels methane emissions from heavy-duty (HD) natural-gas-fueled vehicles and the compressed natural gas (CNG) and liquefied natural gas (LNG) fueling stations that serve them. MORE

For half a century, California has been at the forefront of reducing emissions and cleaning up air pollution. emissions California natural gas California Air Resources Board CARB electric utilities MethaneAnd the state has made breathtaking progress since the days of early-Seventies technicolor photochemical smog alerts. But then bad things happen--and a leak at a single natural-gas well shows how much damage can be done to air quality by. MORE

emission laws. emissions EPA VW California Air Resources Board Volkswagen diesel scandalVolkswagen and the U.S. Environmental Protection Agency said today that they had reached an agreement on a plan to address hundreds of thousands of diesel vehicles sold over six years deliberately designed to violate U.S. The agreement, released at 8 am California time this morning, complied with a deadline of today imposed by U.S. MORE

emissions Daimler Fuel EconomyWhile it plans to launch 10 new electric cars by 2025, Mercedes-Benz is far from done trying to improve the efficiency of internal-combustion engines. The German luxury automaker is giving its lineup of engines a major overhaul, in fact. It plans to introduce a new family of 4-, 6-, and 8-cylinder engines, with the new engines starting to arrive. MORE