Mazda e-Skyactiv X engine revealed – clever compression ignition petrol updated

More power, lower emissions and improvised drivability promised for Mazda’s clever petrol engine

Mazda 3

Mazda has announced a series of small refinements to its clever Skyactiv X petrol engine that will debut in the 2021 model year Mazda 3 and CX-30. Promising to unlock more power and torque while reducing emissions, the changes signal Mazda’s continual refinement of its clever variable ignition system as the technology matures in the market. 

Available in upper-level Mazda 3 and CX-30 models, the new e-Skyactiv X engine is based on the same supercharged and mild-hybrid 2-litre petrol four-cylinder engine, but features a lower 15.0:1 compression ratio, re optimised combustion cycle, new pistons and a software update to the mild-hybrid system. 

> New Mazda 3 review – a coming of age for Mazda’s Golf and Focus rival

The changes have resulted in a 6bhp peak power rise to 186bhp, and torque is rated 11lb ft higher at 177lb ft, but the key is where these figures are reached, with more power and torque available lower down in the rev range improving drivability in the midrange. Attention has also been paid to more effectively using the integrated starter motor generator to further flatten the torque curve.

Mazda e-Skyactiv X

Fuel consumption and emissions have also been reduced, which depending on the model is up to 2mpg and 12g/km cleaner than previously. This continual refinement also bodes well for the next generation of Skyactiv X powertrains due in the next 12-24 months, as Mazda prepares to launch a new range of straight-six petrol engines, in its next generation model lineup.

Mazda’s unique approach to engineering more often than not culminates in interesting, if not entirely rational powertrains. As one of few examples of blue-sky thinking in combustion engine design, Skyactiv X technology certainly has its merits, but from our experience is still a technology in its infancy. Hopefully this update will be a step in the right direction.

Most Popular

New Audi RS3 revealed – AMG’s A45 S rival returns fitter and faster
2021 Audi RS3 Sportback – front tracking
Audi RS3

New Audi RS3 revealed – AMG’s A45 S rival returns fitter and faster

After months of tech insights, we now finally get to see the all-new Audi RS3 in its finished form
19 Jul 2021
Lotus Emira makes world debut – all-new coupe to rival Alpine A110
Lotus Emira
Lotus

Lotus Emira makes world debut – all-new coupe to rival Alpine A110

Lotus's first all-new car for a quarter of a century comes AMG power and sub-£60,000 price tag
13 Jul 2021
Porsche 911 GT3 Touring 2021 review – pairing the magnificent 992 GT3 experience to a more subtle audience
Porsche 911 GT3 Touring 992 review
Porsche 911 GT3

Porsche 911 GT3 Touring 2021 review – pairing the magnificent 992 GT3 experience to a more subtle audience

There are few, if any, more rewarding, engaging or intense experiences for those in pursuit of the thrill of driving
14 Jul 2021