Mazda has confirmed that its revolutionary SkyActiv-X engine will be offered in all Mazda models in the future. However, it will be offered alongside the SkyActiv-G and SkyActiv-D engines and not replace the former entirely.

The SkyActiv-X engine is differentiated via its primary combustion method. Instead of having the spark plug initiate combustion which is the norm in petrol engines, SkyActiv-X achieves combustion via compression like a diesel engine.

However, relying on compression-based ignition alone has its limitations, specifically the limited rpm range within which it can operate. To solve this problem, Mazda has retained the spark plug in a system which allows the engine to completely switch between compression ignition and spark ignition. Mazda calls this SPCCI (Spark Controlled Compression Ignition), and claims that employing the best of both worlds creates an engine that’s more efficient, powerful and responsive enough to fulfil its Jinba-Ittai driving philosophy.

So far, a 2.0-litre SkyActiv-X engine has already been confirmed for production by 2019. Mazda says that it will be offering a smaller engine to broaden its application to all models but the actual displacement has yet to be confirmed. By then, the company will also be offering mild hybrid and battery-powered EV alternatives. These powertrains will probably be the result of Mazda’s recent technological collaboration with Toyota.

A second-generation SkyActiv-D engine is also planned for 2020 despite the backlash facing diesel engines in Europe.