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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:

Carmakers ask Trump to revisit fuel efficiency rules

Car companies operating in the US are required to meet stringent fuel efficiency standards (a fleet average of 54.5MPG) through 2025, but they're hoping to loosen things now that President Trump is in town. Leaders from Fiat Chrysler, Ford, GM, Honda, Hyundai, Nissan, Toyota and VW have sent a letter to Trump asking him to rethink the Obama administration's choice to lock in efficiency guidelines for the next several years. The car makers want to revisit the midterm review for the 2025 commitment in hopes of loosening the demands. They claim that the tougher requirements raise costs, don't match public buying habits and will supposedly put "as many a million" jobs up in the air. The Trump administration hasn't specifically responded to the letter, although Environmental Protection Agency nominee Scott Pruitt had said he would return to the Obama-era decision. The automakers' argument doesn't entirely hold up. While the EPA did estimate that the US would fall short of efficiency goals due to a shift toward SUVs and trucks, the job claims are questionable. Why would making more fuel efficient vehicles necessarily cost jobs instead of pushing companies to do better? As it is, even a successful attempt to loosen guidelines may only have a limited effect. All of the brands mentioned here are pushing for greater mainstream adoption of electric vehicles within the next few years -- they may meet the Obama administration's expectations just by shifting more drivers away from gas power. This article by Jon Fingas originally appeared on Engadget, your guide to this connected life. Related Video: News Source: ReutersImage Credit: Daniel Acker/Bloomberg via Getty Images Government/Legal Green Chrysler Fiat GM Honda Hyundai Nissan Toyota Volkswagen Fuel Efficiency CAFE standards Trump

Investigators say Mitsubishi mpg scandal was 'collective failure'

Investigators hired by Mitsubishi Motors to probe why the Japanese automaker engaged in falsifying fuel-economy figures for the past quarter-century faulted the company's "corporate culture." Specifically, there was a lack of unity between divisions, company-wide pressure to boost fuel-efficiency numbers, and an unwillingness to accept fuel-economy shortfalls, Automotive News says, citing comments made by consultants who hired by the company to investigate the problems. Challenging management authority even if it was proper to do so was also frowned upon. One of the investigators called the scandal "a collective failure." Among other suggestions, the consultants recommended that Mitsubishi's vehicle-mileage certification be independent from research and development, that there's greater transparency overall, and that there's a more thorough understanding of laws. New shareholder Nissan may also invest in retooling Mitsubishi's R&D operations, and is sending one of its former executives, Mitsuhiko Yamashita, to Mitsubishi to try to prevent any sort of repeat problems. Mitsubishi joined a list of automakers including Volkswagen, Hyundai/Kia, and Ford that have been found in recent years to either mislead with its published fuel-efficiency figures or emissions-testing procedures. A Nissan spokesman declined to comment on the Mitsubishi report, according to Automotive News. The recommendation comes less than three months after the announcement that Nissan would help rescue Mitsubishi from its fuel-economy scandal by acquiring part of the company. Nissan agreed in May to pay $2.2 billion for a 34-percent stake in Mitsubishi, and said at the time that Mitsubishi would join the Renault-Nissan Alliance. Nissan also owns 15 percent of France-based Renault. That announcement came right after Mitsubishi's admission that it may have falsified fuel-economy data for every one of its vehicles made in Japan dating back to 1991. Related Video: News Source: Automotive NewsImage Credit: Tomohiro Ohsumi/Getty Images Green Mitsubishi Nissan Fuel Efficiency scandal diesel scandal