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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:

Toyota 86 and Subaru BRZ successor canceled?

Rumors indicate that the Toyota 86 is done for. Japanese Nostalgic Car is quoting Japanese sources as saying Toyota and Subaru have parted ways regarding the 86 and that the current car's replacement is off the table. According to JNC, the Japanese magazine Best Car is readying a report that the 86/BRZ successor has been canceled. JNC also considers the fact that in Japan, there will be a four-cylinder, 197-horsepower version of the new Supra, ready to continue where the 86 will leave the market. Back in 2016 the automaker seemingly confirmed that a replacement for the rear-drive car was under development, but plans can change and with a cheaper Supra version for sale in markets outside the U.S., we have to wonder if the 86 replacement has been shelved. The 86, while balanced, has only received mild enhancements and not a lot of extra power during its near-decade long time on the market, and it isn't such a strong seller that it would necessarily merit the effort of Toyota developing a successor on its own, particularly without the help of a partner like Subaru or BMW. At the same time, Autocar quotes Toyota boss Akio Toyoda on the Supra: "At the end of the day, is there anything better than a tight rear-wheel-drive sports car? I hope this won't be the last Toyota sports car you see from us in the future." While that is far from a solid statement of Toyota's future intent, it paves the way to offerings below the Supra, and shows how much the company boss cares about driver involvement. There is a distinct possibility that the company will re-introduce the MR2 as an electrified, rear-drive sports car – which could still be a joint venture with Subaru, as Japanese Nostalgic Car theorizes. Whatever's in the pipeline – and we hope there is something in the pipeline – it seems Toyota's heart is in the right place: driving the rear wheels. Related Video:

Toyota mulling Cummins diesel for Tundra?

When Bloomberg spoke to Toyota USA Sales CEO Kazua Ohara recently, we highlighted his comments on the possible return of the Toyota Supra. However, the interview started with Ohara discussing the Tundra, and how it would take time to pinpoint and hone the pickup truck's brand image in the minds of consumers. That effort could get a boost, with a report in Edmunds saying that Toyota is "evaluating" the addition of a Cummins turbodiesel to the Tundra's engine options.
The Cummins powerplant is one of two options for the moment, the other being a hybrid powertrain. If the oil-burner got the thumbs-up, Toyota would follow the recent example of Nissan, which announced it would put a Cummins turbodiesel into its 2015 Titan. While the two Japanese companies make a closer comparison since they're both talking about Cummins applications in light-duty trucks, if it happens, it could be seen as further diluting the once-exclusive tie-up that Ram trucks has had with Cummins even though Ram has used Cummins in its heavy-duty truck.
Toyota hasn't said when it will decide on which direction to take, but either will be a move for the better in the view of segment watchers; PickupTrucks.com said the first of its top-five fixes for the Tundra would be a better engine, perhaps a diesel-electric hybrid from Toyota's Hino unit. Cummins told Edmunds it can supply a second manufacturer with the 5.0-liter diesel that Nissan will be using, so we wouldn't be surprised to see it end up in a Toyota or somewhere else.