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Mazda Skyactiv-X Review | The revolution begins with a squeeze-bang

The matte black Skyactiv-X prototype looks like a rough Mazda3, perhaps reconstructed after a bad wreck by an over-enthusiastic owner of a spot welder and lots of gaffers' tape. Ribbed ducts poke out of the dash sending two breaths of conditioned air to no one in particular. Even its revolutionary engine, the thing we're here to experience, is entombed in a massive, nondescript cover to mask its unseemly noises. It's a wild, strange way to meet a very unconventional vehicle that promises diesel-like fuel economy, a wide torque band, and an exotic method for burning less gas than ever before. It takes a few hours for Mazda's engineers to explain the fundamental principles of operation. For more detail, read our Skyactiv-X Spark Controlled Compression Ignition explainer, but here's a very brief overview. Skyactiv-X marries some traditional gasoline engine characteristics with a novel form of compression ignition called SPCCI. The key for Skyactiv-X is to use very high compression in the cylinder and an extremely lean fuel-air mixture. Squeezed right to the cusp of getting hot enough to blow up all on its own (which is very hard to predict), a squirt of extra gas and a spark interject to cross that compression-ignition threshold in a controlled and predictable manner. See the animation below: That takes a few essential components to get just right. One is a massive amount of computer processing power and some pressure sensors in the individual cylinders, because the ambient conditions change how and when these things happen. Skyactiv-X uses a clutched supercharger to pump in additional air when needed to nail the mixture precisely, and high-pressure injectors to get the low ratios of fuel to disperse properly in the chamber. And since it operates like a conventional gasoline engine sometimes, it uses valve timing to lower the very high compression ratio so it doesn't reach combustion ignition in that mode. In practice, the Skyactiv-X runs in compression ignition mode most of the time. In practical terms, that means it drives like a torquey gasoline Skyactiv engine. The torque curve is broad and flat — diesel-like in that respect. That also means it can get away with using a six-speed transmission and a lower final drive for better response. There's enough grunt and economy together that Mazda can let the engine spin faster — at 60 mph, it's running at roughly 1,000 more RPM than a similar gas engine, with greater efficiency.

Mazdaspeed2 supermini hot hatch under consideration

Though the Ford Fiesta ST and Fiat 500 Abarth (and arguably the Mini Cooper S) may stand pretty much alone in the North American market, in overseas markets, supermini hot hatches are a big deal. Unfortunately, challengers like the Volkswagen Polo GTI, Seat Ibiza Cupra and Renault Clio RS 200 Turbo never make it to our showrooms, but word has it that there's soon to be a new entry on the market.
That would be the Mazdaspeed2, which would be badged in certain markets as the Mazda2 MPS. Speaking with Australian site CarAdvice.com.au at the launch of the Mazda2 on which it would be based, the Japanese automaker's global sales chief and the hatchback's deputy product manager hinted that such a product is definitely being discussed, even if it hasn't yet been approved.
This wouldn't be the first time such a notion were entertained, as Mazda has shown numerous performance concepts based on the previous Mazda2/Demio over the years, but none have come to fruition.

2016 Mazda6 gets a facelift in LA

The 2014 Los Angeles Auto Show is a busy one for Mazda, as the Japanese brand shows off not only its all-new CX-3, but a facelifted Mazda6 sedan.
The 2016 sedan has been nipped and tucked to better fit in with newer members of the brand's range, including the aforementioned CX-3, as well as the Mazda3 and MX-5 Miata.
The grille's horizontal slats are now trimmed in chrome, while the brand's chrome wing motif on the fascia is larger and more prominent, particularly where it feeds into the headlights.