2011 Mazda Cx-9 Grand Touring on 2040-cars

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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 hopes to return to Le Mans

Mazda has been away from the winner's circle at Le Mans for some time now. But it could be preparing a return to the forefront at the famous French endurance race in the near future. That is, at least, if the racing enthusiasts within its ranks get their way. "I know that the expectation for us to return to Le Mans is high. I can imagine a day when Mazda returns," Nobuhiro Yamamoto told Top Gear at the Goodwood Festival of Speed this past weekend. "I hope - as with many other Mazda fans - that we go back to Le Mans." His words hardly serve as confirmation of the Zoom-Zoom brand's intentions, but they certainly speak rather loudly to a desire within its ranks. They hardly come out of left field, either. Yamamoto-san is arguably the man best positioned to spearhead such a campaign – or would at least be best informed if such a campaign were underway. He's currently the program manager for the MX-5, and decades ago was the racing engineer behind the 787B. That Group C prototype racer represented Mazda's last major effort at taking top honors at Le Mans, and take them it did when it won the race outright in 1991. The Japanese automaker was out in force this past weekend at Goodwood, the event's central sculpture honoring Mazda's racing history, and its presence only fueling rumors that it could be preparing a renewed assault on endurance racing – potentially once again under rotary power. The 787B, motorsport history buffs will tell you, represented the first and last time to date that a Japanese manufacturer won the 24 Hours of Le Mans. Although Toyota has been competing with Audi and Porsche at the front of the field with the TS040 Hybrid, it has yet to win the key race, despite having taken the FIA World Endurance Championship last year. "Everyone at Mazda would love to see the only Japanese company to ever win the 24 Hours of Le Mans return to the famed twice-around-the-clock classic," a spokesman for Mazda's North American motorsports department told Autoblog by correspondence. "Whether that'll actually happen isn't something we can discuss at this time, but, given our historical and current involvement in motorsports, our interest in the event should be no surprise to anyone. We agree with Yamamoto-san when he says he hopes it happens." So while Mazda may not be ready to confirm the prospect of its return to Le Mans, it certainly isn't ruling it out, either.

Mazda's game plan: Compression ignition, superchargers, EVs — and still fun to drive

Today, Mazda announced its new Sustainable Zoom-Zoom 2030 initiative. Dumb marketingspeak name aside, this is Mazda's general plan to make its cars more efficient while still keeping Mazda's fun-to-drive character. The most notable part of this announcement is Mazda's new Skyactiv-X engines and the addition of EVs and electrified powertrains starting in 2019. As we reported back in January, this new supercharged Skyactiv-X engine family will be the first to use high-compression ignition, or HCCI, rather than traditional spark plugs. Each year, fuel economy and CO2 emissions standards grow ever tighter. Each and every automaker around is looking for ways to improve both factors. Initially, most have chosen to downsize engines and add turbochargers. That's why Mazda's new Skyactiv-X engines are going to be so special. They essentially work like a diesel engine, using extremely high compression to ignite the fuel rather than the flame from a spark plug. Adding a supercharger rather than a turbo retains a smooth and immediate engine response. Look for a 10 to 30 percent increase in torque and a sizable boost in fuel economy. Mazda's engine already have some of the highest compression ratios around, but these new engines will push well into diesel territory. The biggest issue so far with gasoline compression ignition is controlling when the gasoline ignites. Mazda claims to have solved this issue, seamlessly moving from spark to compression ignition. This new plan comes 10 years after the first Sustainable Zoom-Zoom initiative was announced. With Sustainable Zoom-Zoom 2030, Mazda wants to focus on the Earth, society, and people. Together with the new engines, Mazda hopes to create a sustainable future that still involves engaging and fun-to-drive automobiles. First, Mazda wants to consider emissions over the entire life of a car. That means reducing emissions generated while building the car or fueling and charging a car in addition to those released while it's on the road. The goal is to reduce emissions to 50 percent of 2010 levels by 2030, and a 90 percent reduction by 2050. New electrified models will debut in 2019 in markets that have a high ratio of clean energy for power generation. Mazda's focus on society aims to improve safety with the Mazda Proactive Safety philosophy. Like with Skyactiv, this ethos goes far beyond simply improving an engine or adding new active safety technology.