1993 Mazda Rx-7 R1 Coupe 2-door 1.3l on 2040-cars

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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:

Mazda Miata 25th anniversary display is roadster heaven on Earth

As part of the celebration of the 25th anniversary of the MX-5 Miata, Mazda has put together a rather large display at its New York Auto Show booth, showing off significant models from the diminutive roadsters history.
The display represents a healthy split of volume models, with cars 14, 15 and 17 sitting alongside cars 500,000 and 700,000. There are also more than a few concept cars in the offering, such as the Super20 Concept we drove a few years back, as well as older offerings, like the Club Racer concept from the 1989 Chicago Auto Show, the M-Speedster from the 1995 Chicago show and the M Coupe from the 1996 New York Auto Show.
We've put together a gallery of images of the historical Miata display, which you can view above. Take a look and then let us know which of Mazda's awesome roadsters is your favorite.

More photos of the 2014 Mazda3 sedan

Thanks to the folks at Top Gear Russia, we got an early glimpse of the 2014 Mazda3 sedan. Now, Mazda has released more images of its sleek new four-door, and if you like what the Japanese automaker has done with the five-door hatchback, you won't find anything to complain about with the sedan.
Many would argue that the Mazda3 sedan looks like a scaled-down version of the new Mazda6, and in many cases, that's true. But there are subtle details about the Mazda3 that we really like, starting with the larger grille that makes for a slightly more aggressive front end. On the profile, we like how the strong arching character lines that flow over the front and rear wheel wells intersect in the middle of the car and then taper off. At the rear, a short decklid rounds off a very clean design with taillamps that are indeed reminiscent of the larger Mazda6.
We can't yet confirm powertrain details (or any other specifications, really), but we fully expect the same 2.0-liter and 2.5-liter Skyactiv-G engines to carry over from the hatchback, as well as the six-speed automatic and manual transmissions.