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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:

Alpine unveils N36 LMP2 car that will race in 24 Hours of Le Mans

This is the Alpine LMP2 competitor you'll see contesting European endurance races this year, including The 24 Hours of Le Mans in June. Parent company Renault showed off the N36 racer at its atelier in Paris, the blue and orange a switch from the yellow, black and white livery Alpine wore last time it was seen in Le Mans way back in 1978 when it won the race.
The team will be run by Signatech-Nissan and the chassis will be powered by a Nissan engine. Nelson Panciatici and Pierre Ragues will contest World Endurance Championship rounds throughout the year, they'll be joined by endurance and IndyCar veteran Tristan Gommendy for Le Mans and Paul-Loup Chatin as the team's reserve driver.
The Alpine N36 will get into its first test this week at Paul Ricard, then experience its first racing miles at the European Le Mans Series round at Silverstone on April 13. The press release below has the full scoop, the photos above have the past and present in high-res glory.

2015 Nissan GT-R Nismo is Japanese for "Zero Competition"

It was only a little more than a year ago that we were wondering if there would be a new Nissan GT-R, now here we are writing about the introduction of two of them. Carlos Ghosn himself unveiled the new 2015 Nissan GT-R Nismo and the standard-in-name-only 2015 GT-R on which it is based. The Nismo is all about ape-chested mojo, coming with the tagline "Zero Competition," GT3-derived tweaks without and within and a 'Ring time of 7:08.679.
Nissan also brought the actual 'Ring-running car to the event and you'll notice that it has a different rear wing than the two show cars. We were told that the wing on the time-setting car would be available on the car that goes on sale, Nissan intending to keep its "production car" promise.
You can check out the Nismo above in the new Dark Matte Grey exterior hue and in Brilliant White Pearl, as well as the new GT-R, its new Ivory interior and LED light signature below. We haven't written this in a while, so allow us to bring the challenge back: Porsche - your move...