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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 specs new MX-5 Miata with accessories

It's been 26 years since Mazda showcased the original Miata at the Chicago Auto Show, and now it's returned with a conceptual take on the new model, decked out with all the accessories and optional equipment your roadster-loving heart could desire. Or at least some of 'em, anyway. This show car is painted Ceramic Metallic (Zoom Zoom-speak for "white") and spec'd out with a full aero kit (including front air dam, side sills, rear skirt and lip spoiler) all done up in gloss black, 17-inch BBS wheels and Brembo brakes with red calipers. Mazda is also showcasing a carbon-fiber luggage rack for the new MX-5 that weighs less than two pounds and includes and integrated brake light. "The concept parts and accessories we have showcased at the Chicago Auto Show," said Mazda's North American chief Jim O'Sullivan, "were developed to give customers a look at what is possible for the new cars to make them truly one-of-a-kind, adding to that excitement." See them shown off in our high-res gallery of live photos, above. MAZDA UNVEILS 2016 MX-5 MIATA ACCESSORIES CONCEPT DESIGN AT CHICAGO AUTO SHOW CHICAGO, Feb. 12, 2015 -- The only thing better than the all-new 2016 Mazda MX-5 Miata is a personalized 2016 Mazda MX-5 Miata. Today at the Chicago Auto Show, where the first-generation MX-5 Miata was introduced to the world in 1989, Mazda revealed an MX-5 accessories design concept of the next-generation roadster that will hit showrooms this summer. At the Chicago Auto Show, Mazda revealed a 2016 Mazda MX-5 Miata accessories design concept for the next-generation roadster that will hit showrooms this summer. "There is so much MX-5 history at the Chicago Auto Show, and we wanted to continue building on that," said Jim O'Sullivan, president and CEO, Mazda North American Operations. "The MX-5 is the soul of our company, and its enthusiast following both inside and outside of Mazda drives us to keep innovating new ideas for it and the rest of our lineup." Painted Ceramic Metallic, the 2016 MX-5 accessories concept will be on display from Thursday, February 12 through Sunday, February 22 and includes an Aero Kit, BBS Wheels and Brembo Brakes as well as a Luggage Rack shown separately in Mazda's display. MX-5 concept accessories include: - Aero Kit (Front Air Dam, Side Sill Extensions, Rear Bumper Skirt and Rear Lip Spoiler): The gloss-black Aero Kit is the same package found on the 2016 MX-5 Global Cup Car that debuted at SEMA in November.

Mazda and Fiat finalize deal for Alfa roadster, next-gen MX-5 Miata

Although a little bit later than expected, Mazda and Fiat have signed a final agreement that will bring a next-generation MX-5 Miata to the Japanese automaker and a new roadster to Alfa Romeo. When the proposed arrangement was announced back in May, the two automakers had hoped to seal the deal last year, but it doesn't appear that the production timeline for these cars has slipped any, with both expected to start rolling off assembly lines in 2015.
Other than a shared chassis with a rear-wheel-drive layout, it sounds like the two cars are still planned to be distinct in their own ways from their styling right down to their engines. Mazda will produce both cars at a plant in Hiroshima, Japan, but it isn't clear what role each automaker will play in the cars' developmental process. The big question, of course, is what clever portmanteau name we can come up with, like Toyobaru. Mazda Romeo is the easy choice, but Alfazda might roll off the tongue a little better.
Scroll down for a brief press release from both automakers.