Auto manufacturers are delving deep into their boxes of tricks to make internal combustion engines more efficient.
If this sounds familiar, it's because diesel engines do the same thing.
The new compression ignition engine is 20% to 30% more fuel efficient than the Japanese automaker's current engines and uses a technology that has eluded the likes of Daimler AG and General Motors Co.
The Japanese is developing a new range of engines called Skyactiv-X, which are set to replace the current Skyactiv-G range in 2019.
In compression ignition diesel engines it's the piston compression that ignites the air-fuel mixture, while petrol engines rely on a spark plug.
Mazda Motor unveiled plans for the world's first commercial petrol engine using compression ignition, placing traditional engines at the centre of its strategy days after saying it would develop electric cars with Toyota Motor.
Until now only diesel engines have used the compression ignition combustion technique, however because petrol combusts differently to diesel, Mazda has had to make some adaptations.
"With high efficiency across a wide range of rpms and engine loads, the engine allows much more latitude in the selection of gear ratios, providing both superior fuel economy and driving performance", said Mazda.
Mazda also argues that while electric technology produces no emissions from a car's tailpipe, it is yet to represent a truly sustainable option on a global scale because much of the world's electricity grids are still powered by fossil fuels. SkyActiv-X will avoid the issue by operating as a conventional, spark plug-ignited engine when conditions demand it. Expect to see electric cars and "other electric drive technologies" in Mazdas in some markets by 2019.
What's more, it says the combination of compression ignition and a supercharger delivers "unprecedented engine response" and between 10 and 30 per cent more torque than Mazda's current petrol engines.
Mazda's plans also include the announcement that it will start introducing electric vehicles from 2019 in line with its plans to reduce corporate average well-to-wheel carbon dioxide emissions to 50% of 2010 levels by 2030, and achieve a 90% reduction by 2050. Don't expect the company to turn its back on gasoline and diesel, though - the plan says Mazda will "continue efforts to ideal the internal combustion engine".