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50 engineers kept the rotary alive at Mazda for 8 years

The Mazda RX-Vision concept is one of the standouts at this year's Tokyo Motor Show thanks to a drop-dead gorgeous design and a revival of the Wankel engine. The fact that the rotary is still in development at Mazda is thanks to a dedicated group of 50 engineers. According to Automotive News, their dream for the last eight years has been to bring this storied engine design back to the street. It won't be easy. Because of its design, the rotary suffers from poor fuel economy and high emissions. Making the challenge even harder, Mazda reportedly only gives them a small budget, but they continue to chip away at the problem. "These 50 engineers want to develop the rotary engine, therefore they joined Mazda," company research and development boss Kiyoshi Fujiwara told AN. "If I stop the rotary engine, probably they want to leave." For the Skyactiv-R under the RX-Vision's svelte hood, the team reportedly started from the 16X rotary project. Dating back to 2007, that 1.6-liter engine was supposed to improve torque and fuel economy thanks in part to direct injection. After additional development, insiders even suggested that the engineers might have finally solved the powerplant's issues. However, Mazda never put the mill into production, and the RX-8 remains the company's last Wankel-powered model to be offered in showrooms. "We have a dream that one day, this design with a rotary engine will achieve a level that customers will accept," CEO Masamichi Kogai said to AN. Mazda is quite clear that the RX-Vision might never go on sale without a suitable rotary. Although if it does see production, the coupe would likely use a stiffened version of the Miata's chassis, AN reports. Before anyone can place an order, these 50 determined engineers still have a lot of work ahead of them. Related Video:

Honda, Mazda, Mitsubishi, Mercedes also under diesel emissions scrutiny

The controversy over Volkswagen's diesel emissions scandal isn't limited to the US. In Europe, where diesel engines are far more popular, the issue is shining a harsh light on the NEDC emissions test. As already known, the evaluation does a poor job of reflecting real-world production of NOx, and it appears a significant number of automakers are affected. The Guardian in the UK has been reporting on real-world test results from a company called Emissions Analytics. After the latest round of checks, vehicles from Mercedes-Benz, Honda, Mazda and Mitsubishi were found to generate far more NOx than they should. The newspaper also published similar results for Renault, Nissan, Hyundai, Fiat, Volvo, Jeep, Citroen, VW, and Audi. On average, the figures are about four times over the limit of producing the pollutant. Unlike VW and its defeat device, these automakers aren't actually breaking the rules. The vehicles perform up to the NEDC lab test for emissions, but those results simply aren't translated to the street. "The VW issue in the US was purely the trigger which threw light on a slightly different problem in the EU - widespread legal over-emissions," Nick Molden from Emissions Analytics said to The Guardian. A big fight to decide the future of this issue appears to be on the horizon. Automakers claim that they can't meet the next round of tightening emissions regulations and are asking for compromises. Although, spokespeople for Mercedes and Honda told The Guardian that the brands would be in favor of the stricter rules. Meanwhile, some European governments began backtracking their support of diesels well before this scandal came to light. The added scrutiny certain hasn't helped the future of the oil-burner. Related Video:

Mazda, Mitsubishi, and Subaru expand global Takata recalls by 715k [UPDATE]

UPDATE: Subaru of America spokesperson Michael McHale tells Autoblog that the company is recalling 78,000 Imprezas from the 2004 and 2005 model years in the US. This is a national expansion of the company's previous regional recall for the Impreza. The Takata airbag inflator recall just keeps growing. The latest expansion encompasses 715,000 vehicles from Mazda, Mitsubishi, and Subaru. Many of the affected models are in Japan. The largest expansion from these three automakers comes from Mitsubishi. According to Reuters, the company is adding 100,000 vehicles in Japan and 412,000 outside of the country without identifying any specific regions. Mazda is issuing safety campaigns for 112,000 vehicles in Japan, and some of these include models that the company produces there for Mitsubishi and Nissan, according to Reuters. In statement to Autoblog (embedded below), Mazda said that it is still evaluating the situation in terms of a possible effect on the US. Finally, Subaru is calling in 91,000 Imprezas in Japan. At this time, it isn't clear whether Mitsubishi's or Subaru's expansions affect the United States, but Autoblog has reached out to them for more information. According to research by the National Highway Traffic Safety Administration, exposure to moisture can cause the propellant in these inflators to ignite too quickly and cause these dangerous ruptures. Takata has also been investigating the problem. Related Video: Mazda statement "We are aware of the NHTSA/Takata announcement, and are evaluating the effects of it on Mazda. As soon as we have had a chance to fully evaluate the situation – number of vehicles affected, age of those vehicles, where they're located, etc. – we will be able to share those details."