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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:

2016 Nissan Titan gets video teaser ahead of Detroit debut

The Detroit Auto Show is going to be quite an event for pickup fans thanks to introductions of the new Toyota Tacoma and at least the rumor about the future F-150 Raptor. In addition to them, Nissan will finally unveil its next-gen Titan after months of teasing and spied glimpses. With just a few weeks before the big show, Nissan is giving us one more glimpse of the new Titan on video. This time the company plays up the pickup's American development, but the highlight for fans are the brief shots of its frame and Cummins 5.0-liter diesel V8. The engine is rumored to pump out over 300 horsepower and about around 550 pound-feet of twist. Check out the clip above another chance to see just a little more of the next Titan.

Ghosn: Nissan Leaf can sell 50,000 units in US a year

For the Nissan Leaf, last year was good. So far this year, not so much. In the future, possibly much better, with a little help from the public sector, Nissan chief Carlos Ghosn says. Speaking at the New York Auto Show earlier this month, Ghosn was bullish on potential US sales of the country's best-selling electric vehicle, saying they had the capacity to reach 50,000 units a year, according to Automotive News. The key, Ghosn said, is that federal and local governments will have to do a better job ensuring there is a sufficient network of plug-in vehicle charging stations. That would make the Leaf's 84-mile single-charge range far less of an issue than it appears to be now. It would also give Ghosn a better chance of a decent return on the $5 billion Nissan and sister company Renault have invested in electric-vehicle technology. Last year, Nissan boosted Leaf sales in the US by 34 percent to 30,200 units, and earlier this year surpassed the 75,000-unit threshold for Leaf sales since its late-2010 US debut. So far this year, though, things are slipping, as sales through the first quarter were down 21 percent compared to 2014 to 4,085 vehicles. That's an awful long way from 50,000, but Ghosh didn't say which year he expects Nissan to sell those 50,000 Leafs. Related Videos: