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This map reveals the cleanest vehicles based on location

Naysayers love to point out how dirty the electricity grid mix is when it comes to charging electric vehicles. Curmudgeons are eager to jump into any conversation about EVs to enlighten the lucky listeners about how plug-in cars contribute to pollution, sometimes even throwing in a dash of climate-change denial for good measure. (Thanks, buddy. Pray, tell me more about the plight of oppressed SUV owners.) Unless someone buys an EV just because they think they're cool (which, yeah, they often are), they probably have at least a passable understanding of their environmental pros and cons. As many EV owners are already aware, location has a lot to do with any particular plug-in car's carbon footprint. Still, there's always more to know, and knowledge is not a bad thing, especially if one uses it to do the right thing. That's why this handy-dandy map from Carnegie Mellon University is so interesting. CMU researchers have compiled information about the lifecycle greenhouse gas emissions of various EVs based on where they're charged, as compared to gasoline-powered vehicles. The researchers looked at the Nissan Leaf, Chevrolet Volt, and Prius Plug-In Hybrid versus the gasoline-dependent Toyota Prius hybrid and the stop-start-equipped Mazda3 with i-ELOOP and compared grams of CO2 emitted per mile. CMU takes into account the grid mix, ambient temperature, and driving patterns. CMU takes into account the grid mix based on county, as well as ambient temperature and driving patterns in terms of miles traveled on the highway or in the city. For instance, if you drive a Nissan Leaf in urban areas of California, Texas, or Florida, your carbon footprint is lower than it would be if you were driving a standard Toyota Prius. However, if you charge your Leaf in the Midwest or the South, for the most part, you've got a larger carbon footprint than the Prius. If you live in the rural Midwest, you'd probably even be better off driving a Mazda3. Throughout the country, the Chevrolet Volt has a larger carbon footprint than the Toyota Prius, but a smaller one than the Mazda3 in a lot of urban counties in the US. The Prius and Prius Plug-In are relatively equal across the US. Having trouble keeping it straight? That's not surprising. The comparisons between plug-in and gasoline vehicles are much more nuanced than the loudest voices usually let on.

Mazda, Suzuki, Yamaha — more vehicle data fabrication found in Japan

TOKYO — Mazda, Suzuki and Yamaha improperly tested vehicles for fuel economy and emissions, the Japanese government said on Thursday, revealing fresh cases of compliance failures by manufacturers. The results came to light after the Japanese government had ordered the automakers to check their operations after revelations of improper testing at Subaru and Nissan last year. The conduct of automakers globally has come under intense scrutiny after Germany's Volkswagen AG admitted in 2015 to installing secret software in hundreds of thousands of U.S. diesel cars to cheat exhaust emissions tests, and that as many as 11 million vehicles could have similar software installed worldwide. In the Japanese cases, the carmakers have not broken any laws or prompted massive recalls. But a growing list of improprieties has tarnished the image of the country's manufacturing industry for high-quality products and efficiency. Suzuki, Mazda and Yamaha cleared vehicles for emissions or fuel efficiency even in cases where they were tested under invalid conditions, the ministry said in a statement. The errors related to slight deviations in the speed of the vehicles during testing that should have invalidated the test results. The automakers examined tests they had conducted over different periods of time, and in Suzuki's case they stretched back to 2012. None of the automakers found significant problems with actual emissions and fuel economy performance of the vehicles, which were destined for sale in Japan, and do not plan any recalls. Suzuki, Japan's fourth-largest automaker, said that of 12,819 sample vehicles tested for fuel economy and emissions since June 2012, around 50 percent of them had been inspected improperly. "I deeply apologize and will lead efforts to prevent recurrence," Suzuki Chief Executive Toshihiro Suzuki told a news conference. Mazda said there were irregularities in 4 percent of similar inspections on its cars, or just over 70 vehicles. In Yamaha's case, irregularities were found in 2 percent of inspections, or just a handful of vehicles. Both Mazda and Yamaha apologized. Suzuki and Yamaha shares fell 6 and 5 percent, respectively, and Mazda shares were down 1 percent, underperforming a steady benchmark Nikkei average. In July this year, Nissan admitted it had improperly measured exhaust emissions and fuel economy for 19 vehicle models sold in Japan.

Mazda starts production of new MX-5 Miata in Japan

We often regard a new model as having arrived when its manufacturer reveals it for the first time. But you might argue that nothing is official until actual production gets underway. And that's just what's happened now with the new Mazda MX-5. The fourth-generation Miata was unveiled a few months ago, and now the first examples have begun to roll off the assembly line at Mazda's Ujina plant in Hiroshima. The first ones are set to stay in Japan, where the new roadster is being introduced initially. Deliveries are set to launch in June. After that, we can expect the new MX-5 to proliferate to markets around the world, including our own. To date Mazda has sold more than 950,000 of its little roadsters, making it the best-selling two-seat sports car in the world. It shouldn't be long, then, before the new model tips it past the million-unit mark. 2015/03/05 Mazda Starts Production of All-new Mazda MX-5 HIROSHIMA, Japan-Mazda Motor Corporation today began production of the all-new Mazda MX-5 two-seater lightweight sports car (known as Mazda Roadster in Japan) at Ujina Plant No.1 in Hiroshima. The first models produced are destined for the Japanese market. Sales of the all-new MX-5 will begin in Japan around June this year and interested buyers can make an appointment for pre-sale discussions through a dedicated website from noon on Friday, March 20. Following sales start in Japan, the MX-5 will be progressively rolled out to overseas markets. The MX-5 is an iconic model representing Mazda's vehicle engineering philosophy: the pursuit of driving pleasure. With production exceeding 950,000 units as of the end of January 2015, the MX-5 continues to hold the Guinness World Record for the world's best-selling two-seater sports car. In order to respond to ever increasing demands for safety features and environmental performance while maintaining the element of fun that has always defined the model, development of the fourth generation MX-5 was carried out under the motto "innovate in order to preserve". In addition to incorporating SKYACTIV TECHNOLOGY and KODO-Soul of Motion design, development focused on enhancing the senses and sensations through which people enjoy cars. Moving forward, Mazda will continue to enrich the lives of its customers through a variety of touch points including the production of high-quality vehicles, and become a brand that maintains a special bond with its customers. Related Video: