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Volkswagen’s use of trick software to cheat in official emissions tests has sowed doubt in consumers’ minds. Are they the only ones? Is this practice widespread? With that in mind, Mazda has released a statement to declare that they do not employ such methods.

“In compliance with the law, Mazda works hard to ensure that every gasoline and diesel engine it makes fully complies with the regulations of the countries in which they are sold. Mazda never uses illegal software or defeat devices. Mazda’s customers may rest assured that their vehicles are fully compliant with all regulations,” the statement read.

“Now and into the future, Mazda remains committed to improving fuel efficiency and reducing CO2, as well as making exhaust emissions as clean as possible, while continuing to offer driving pleasure. Mazda will continue developing new technologies and working towards achieving ‘ideal combustion’ in the internal combustion engine.

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“A number of countries around the world are investigating new homologation testing methods based on real driving conditions, such as worldwide harmonised Light-duty Test Cycles and Real Driving Emissions. Mazda supports these initiatives and will cooperate with any requests from authorities,” it added.

It was recently revealed that Mazda is targeting a 30% improvement in fuel economy for its SkyActiv engines, by 2020. The company believes that there’s scope for more development in the conventional internal combustion engine, instead of going the hybrid route.

“We have a real passion for efficient combustion. You could equate it to the passion we have for the Mazda MX-5 sports car. There’s huge heat wastage in conventional engines: surely it’s better to do something constructive about that then adding weight with extra power units?” Mazda Europe boss Jeff Guyton told Autocar.