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Japan plans real-world diesel emissions test after companies fail

Japan's transport ministry plans to start real-world diesel emissions tests after an experiment found four models from Toyota, Nissan, and Mitsubishi that produced more nitrogen oxide (NOx) emissions than the nation's rules allow, according to The Japan Times. Regulators there usually only perform emissions checks in the lab. The VW diesel scandal has everyone double-checking their figures. Diesel versions of the Toyota Hiace van, Land Cruiser Prado, and Nissan X-Trail produced up to 10 times more NOx than allowed. The Mitsubishi Delica D:5 was up to five times over the limit, The Wall Street Journal reports. There was no evidence of defeat devices in the vehicles. Mazda performed well in the experiment, though. The CX-5 passed with nearly the same results on the road and in the lab. The Demio, better known as the Mazda2, did nearly as well with only slighter higher figures in the real world than in the controlled setting. The experimenters theorized the reason for the excessive emissions was that cold weather caused the engines' software to shut off the exhaust gas recirculation to prevent damage, according to the WSJ. However, this behavior also increased NOx production. Toyota, Nissan, and Mitsubishi don't have to worry about punishment from the transport ministry because this check was just an experiment. Their models already passed the mandated lab tests, which was the only requirement, according to The Japan Times. As governments begin greater real-world emissions tests, the results suggests diesels aren't very clean. A recent check in France found models from Ford, Renault, and Mercedes-Benz that didn't perform up to the standards. Regulators in India conducted similar evaluations and ordered VW to recall over 300,000 vehicles. Related Video:

Recharge Wrap-up: Nissan, Tesla report CO2 savings, rare earth metal recycling simplified

A new process simplifies the recycling of rare earth metals. While the strong magnetic properties of metals like neodymium and dysprosium make them useful in electric vehicles traction motors, there are concerns about their availability and the environmental costs of mining them. Researchers at University of Pennsylvania have developed an easier method to recycle those metals that is less energy intensive and more cost effective. "We have designed a way to separate the two metals by selectively dissolving the neodymium in a solution and leaving behind the dysprosium as a solid," says Justin Bogart, a graduate student working on the project. "This quick and easy method has allowed us to separate equal mixtures of the metals into samples that are 95 percent pure." Now the team is working to improve that level of purity. Read more from University of Pennsylvania. Nissan Leaf drivers in Europe have saved over 55,000 tons of CO2 emissions. Worldwide, the 178,074 Leafs sold account for the prevention of over 293,000 tons of CO2 emissions so far. That equates that to the neutralizing effect of 19 million trees. Besides the positive effects on environmental and noise pollution that switching to electric mobility provides, Nissan also points out that it's good business, too. EVs like the Nissan Leaf and e-NV200 cost about 40 percent less than combustion vehicles to maintain, and the cost of electricity is substantially lower than that of fossil fuels. Additionally, Nissan has published a video of the Leaf touring Bristol to celebrate the greening of European cities with the help of electric vehicles. See the video, and read more from Nissan. Tesla customers have driven a cumulative 1 billion miles. Together, nearly 75,000 Model S drivers have prevented more than 570,000 tons of CO2 emissions worldwide. To put that in perspective, a billion miles is the equivalent of 4,186 trips to the moon, and almost 40,000 trips around the Earth. In the UK, where the Model S is celebrating its one-year anniversary, drivers have already accumulated 6.6 million miles. Tesla is celebrating its milestone with the Next Billion Miles Tour, hosting hands-on events and test drives in 80 cities across North America, Europe and Asia. See the video from Tesla above, visit the One Billion Miles microsite and read more in the press release below.

Mitsubishi admits to tampering with fuel economy data

Mitsubishi admitted this week to intentionally rigging fuel-economy testing in four of its models sold in Asia. The affected models are all so-called Kei class cars with sub-660cc engines manufactured at Mitsubishi's Mizushima plant in Okayama, Japan. About 157,000 of those cars are Mitsubishi eK wagons and eK Space models, and 468,000 are re-badged Nissan Dayz and Dayz Roox cars, which Mitsubishi produces for Nissan. The matter came to light after Nissan found inconsistencies in reported mileage data, which then led to Mitsubishi launching an internal investigation. The fraud was discovered to be related to falsified tire pressure data, which has an effect on mileage results – an important matter considering these kinds of vehicles are marketed by fuel economy. Mitsubishi said it has stopped manufacturing and marketing the affected vehicles. The news caused Mitsubishi's stock to plummet over 15 percent, slicing $1.2 billion off the company's value. When the eK models hit the market three years ago, they were decorated with a Good Design Award by the Japanese Ministry of Economy – a merit that is now surely tarnished. While Mitsubishi has been suffering in the US recently, with news of the Normal, Illinois plant closing, its small Mirage model has sold well. Related Video: Image Credit: Getty Images Green Plants/Manufacturing Mitsubishi Nissan Fuel Efficiency Hatchback Minivan/Van kei cars minicars