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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:

Autoblog's top 50 car photos of 2016

This one shouldn't need much explanation. We like cars a whole lot, and that includes not just driving them but taking great pictures of them. We've collected our 50 favorite images from this year in the mega-gallery above. It's a mix of old and new, with a healthy dose of vintage and modern race cars mixed in, and not one single shot under the harsh lights of an auto show. So click through and enjoy. Featured Gallery Autoblog's Top 50 Photos of 2016 View 50 Photos Image Credit: Copyright 2016 Autoblog.com Audi BMW Chevrolet Dodge Ferrari Ford Lamborghini Mazda McLaren Mercedes-Benz Porsche Rolls-Royce Volvo Convertible Coupe Motorcycle Luxury Racing Vehicles Performance Supercars Classics

2018 Mazda6 Wagon: Beautiful but forbidden

Mazda has finally revealed the updated Mazda6 wagon it announced a few weeks ago. It's just as beautiful as we expected. The exterior features most of the same updates as the sedan version. They include a grille with more depth and dimension, a cleaner lower fascia, and headlights that are more integrated with the grille. Inside, the dashboard has been revised to look less cluttered, and the high-end leather and suede trimmings of the Signature trim are available. View 12 Photos Of course, the 2018 Mazda6 wagon still won't be available in America. And that's particularly disappointing, especially for this author, because the car looks so great. But we do understand the reasons why. Nobody buys wagons, at least without plastic body cladding on them. Plus, Mazda already offers the CX-5 here in the United States, and it serves effectively the same purpose, but in a much more popular crossover package. Seriously, the CX-5 is Mazda's best-seller over the last two months, selling more than twice as many as the next best-seller, the Mazda3. But there's still a silver lining to our lack of a wagon. You see, a close examination reveals that while the European Mazda6 sedan and wagon get most of the same updates as those in the American market, they won't get the 250-horsepower, 310 pound-feet of torque-producing turbocharged 2.5-liter gasoline engine we're getting. And given a choice, we would probably prefer more power than a wagon variant. The most potent engine over in Europe will remain the diesel 2.2-liter engine making 181 horsepower and 328 pound-feet of torque. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Related Gallery 2018 Mazda6 wagon View 30 Photos Image Credit: Live photos copyright 2018 Drew Phillips / Autoblog.com Geneva Motor Show Mazda Wagon 2018 Geneva Motor Show mazda6 wagon