The new Mazda CX-30 e-Skyactiv-X
The new Mazda CX-30 e-Skyactiv-X

Mazda Ireland has confirmed that the 2021 model year versions of the Mazda CX-30 and Mazda3 will see the debut of the updated version of Mazda’s Skyactiv X SPCCI Spark Controlled Compression Ignition petrol engine.

Renamed e-Skyactiv X, the updated version delivers increased performance and even more efficiency.

The latest 2.0-litre e-Skyactiv X engine produces 186 ps at 6,000 rpm and maximum torque of 240 Nm at 4,000 rpm, an increase of 6 ps and 16 Nm respectively. We’re told the torque improvement is most noticeable from 2000 rpm onwards, however e-Skyactiv X’s torque output has improved in almost all engine speed ranges, and particularly under acceleration from partial-load driving situations most commonly found during daily driving.

Efficiency has also been improved, with CO2 emissions dropping by 5 to 11 g/km – depending on model, transmission and trim level – with increases also in combined economy (WLTP).

The updates to Mazda’s 2.0-litre Spark Controlled Compression Ignition engine have been achieved through adjusting the compression ratio, optimisation of combustion control, modified pistons and updating the Mazda M Hybrid mild-hybrid system’s software. This results in a broader operating band of combustion efficiency, so e-Skyactiv X delivers higher maximum engine torque and improves real-world fuel economy. The intake valve timing has been adapted through modifying the intake camshaft, this leads to a reduction in pumping losses and further increases the engine’s specific heat ratio, resulting in improvements to the e-Skyactiv X’s fuel consumption.

Additionally to the updates to the combustion engine, the Mazda M Hybrid mild-hybrid system has had a software update that enables faster reactions of the system’s belt-driven ISGs torque control. This improvement on control smooths drivability by increasing or reducing torque control when needed. For example, when the e-Skyactiv X’s air supply unit turns on – to provide sufficient air needed for a lean combustion fuel-air mixture – or off again, the units inertia creates torque fluctuations. The Mazda M Hybrid’s enhanced software enables torque reactions issued through the belt-driven ISG that are quick enough to flatten the torque curve. As a result, the engine feels smoother during linear acceleration.

Corresponding to the renaming of the e-Skyactiv X engine, Mazda’s 2.0-litre Skyactiv G engine is moving to e-Skyactiv G naming and across the 2.0-litre range CX-30, CO2 has been reduced by 7-8g/km.

On sale now, the 2021 Mazda CX-30 line-up feature a choice of e-Skyactiv X or e-Skyactiv G models, which are offered exclusively with front-wheel drive. GT Sport grades are also available with Mazda’s advanced all-wheel drive system with the e-Skyactiv X engine, in either manual or automatic transmission.

The 2021 Mazda3 is also on sale now with the same upgraded e-Skyactiv X engine. It benefits from 5-11 g/km CO2 reductions, alongside the same power and torque improvements. The 2021 Mazda3 Saloon is offered exclusively with the e-Skyactiv X engine, with the hatchback available in both e-Skyactiv X and e-Skyactiv G.