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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:

Why Japan's government is looking to curb its adorable kei car market

Each region around the world has its stereotypical vehicle. The US has the pickup and Europe the five-door hatchback; but in Japan, the kei car reigns supreme. These tiny cars are limited to just 660cc of displacement but they've also come with lower taxes to make them more affordable. To make of the most of their small size, they've often had quite boxy styling like the Honda N-One shown above, and because they're Japanese, they've often had quirky names like the Nissan Dayz Roox. However, if the Japanese government has its way, the future popularity of these little guys might be in jeopardy. The problem facing them is that Japan is an island both literally and figuratively. After World War II, the Japanese government created the class as a way to make car ownership more accessible. The tiny engines generally meant better fuel economy to deal with the nation's expensive gas, and the tax benefits also helped. It's made the segment hugely popular even today, with kei cars making up roughly 40 percent of the nation's new cars sales last year, according to The New York Times. The downside is that these models are almost never exported because they aren't as attractive to buyers elsewhere (if indeed they even meet overseas regulations). So if an automaker ends up with a popular kei model, it can't really market it elsewhere. The government now sees that as a threat to the domestic auto industry. It believes that every yen invested into kei development is wasted, and the production takes up needed capacity at auto factories. The state would much rather automakers create exportable models. To do this, it's trying to make the little cars less attractive to buy, and thus, less attractive to build. The authorities recently increased taxes on kei cars by 50 percent to narrow the difference between standard cars, according to the NYT. If kei cars do lose popularity, it could open the market up to greater competition from foreign automakers. Several companies complained about the little cars stranglehold on the Japanese market last year, but since then, imported car sales there have shown some growth thanks to the improving economy. Featured Gallery 2013 Honda N-One View 20 Photos News Source: The New York TimesImage Credit: Honda Government/Legal Honda Nissan JDM kei kei car

2014 Nissan Frontier Diesel Mule [w/poll]

Last August, Nissan shook the truck world when it officially announced plans to source a diesel option from Cummins for its long-overdue Titan replacement, its full-size pickup that's slated to drop this January at the Detroit Auto Show. The 5.0-liter V8 turbodiesel is expected to make somewhere around 300 horsepower and north of 500 pound-feet of torque. This combination of an all-new truck with this new powerplant promises to dramatically change the competitive landscape, splitting the difference between the heavy-duty goliaths from the Detroit Three and the Ram 1500 Ecodiesel. And the intrigue moved a step further when the Frontier Diesel Runner Concept showed up at February's Chicago Auto Show, as it displayed a growing relationship between Nissan and Cummins in a very interesting potential future product.
That concept would melt its clear acrylic hood if the engine ran too long, but this month, we got a chance to test drive a production mule, an otherwise normal Frontier with a Cummins 2.8-liter diesel four-pot under the hood and a ZF eight-speed automatic changing gears. The powertrain figures to be a direct competitor to the 2.8-liter Duramax promised for General Motors' Chevrolet Colorado and GMC Canyon twins, but will Nissan build it? All signs point to probably. Officially, Nissan is taking no position on the future of this program, but a concept followed by putting journalists into a test mule suggests the company is considering the option very seriously. Here's what we gleaned from a brief drive around the posh suburbs of Nashville:
Before we get too deep into this Quick Spin, realize this Frontier is absolutely a mule, not a prototype. More or less cobbled together with duct tape and baling wire, it's not meant to be representative of a finished product, or even a started product. The transmission and shifter is straight out of a Chrysler 300 and the shifter surround is cut out of a panel of plastic. The "Low Sulfur Diesel Only" sticker is, well, just stuck on. We're looking at a "What if?" mockup.