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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:

Nissan GT-R and Jaguar F-Type meet for time trial battle [w/poll]

It seems that the Jaguar F-Type Coupe R is the performance coupe du jour. First, Motor Trend challenged it against a Porsche 911 on video to see how it fared. Now, Autocar in the UK is pitting the Jag against the latest iteration of the Nissan GT-R around a small course in a time trial battle.
On paper, it certainly looks like the F-Type Coupe is the clear winner. The two performance cars boast the same 542 horsepower (at least by UK specs), but the Jaguar does it with more torque, less weight and an eight-speed gearbox, compared to the six-speed in the GT-R. That seems like an automatic recipe for victory. However, the Nissan claims a faster sprint to 62 miles per hour and all-wheel drive. Nobody wants to watch a video of the new car running away into the sunset, and once the two of them make it to the track, the playing field appears much more level.
So which would you rather have? Keep in mind, that while the GT-R is cheaper than the F-Type Coupe R by a few thousand pounds in the UK, in the US a base R starts at $99,000, and the Nissan has a base price of $101,770. Scroll down to watch the video, and then make your choice in the poll, below.

Nissan's Carlos Ghosn taps the brakes on autonomous car progress

"Self-driving cars remain a long way from commercial reality."
Nissan CEO Carlos Ghosn shocked the automotive industry last year when he announced that his company plans to offer consumers an autonomous car by 2020. The automaker even showed off its self-driving Leaf prototype as proof. He was bolder recently with the pronouncement that select markets could have them in 2018, if laws allowed. The boss' optimism appears to be waning, though, and he's now sounding a lot more conservative about the future. While driverless vehicles are still on the way, Ghosn is hedging his bets with a more gradual implementation of several systems.