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Mazda hard at work on Skyactiv 2 engine technology

As Mazda continues the current rollout of its still-new Skyactiv technology, the automaker is already looking at improving its family of engines for even better fuel economy and emissions reductions. Automotive News reports that with stricter fuel economy and emissions regulations planned for 2020 and 2025 in Europe, Mazda will likely release engines with next-generation Skyactiv 2 technology by the end of this decade, and Skyactiv 3 units just five years later.
The latter is expected to focus on improved engine cooling and lessening energy losses, but the big news in AN's report is that the next-gen Skyactiv 2 engines will use Homogeneous Charge Compression Ignition, or HCCI. This type of ignition is very similar to how a diesel engine operates (with high compression and using the compression stroke for fuel combustion rather than spark plugs), a method said to provide a cleaner and more efficient fuel burn - to the tune of a 30-percent improvement in fuel economy compared to current Skyactiv engines. Other automakers, including Hyundai, have already announced they are developing HCCI powerplants with similar technology and characteristics, so Mazda likely won't be a lone wolf here.
Equipped with HCCI technology, Mazda figures to be able to compete with larger automakers in terms of fuel economy and emissions without resorting to hybrid powertrains, continuously variable transmissions or automatics relying on more forward gears (eight or more) for optimal efficiency. Some of the challenges of HCCI, according to AN, include the need for better engine cooling, risk of misfire at high and low rpm and uneven engine performance based on fuel properties.

More photos of the 2014 Mazda3 sedan

Thanks to the folks at Top Gear Russia, we got an early glimpse of the 2014 Mazda3 sedan. Now, Mazda has released more images of its sleek new four-door, and if you like what the Japanese automaker has done with the five-door hatchback, you won't find anything to complain about with the sedan.
Many would argue that the Mazda3 sedan looks like a scaled-down version of the new Mazda6, and in many cases, that's true. But there are subtle details about the Mazda3 that we really like, starting with the larger grille that makes for a slightly more aggressive front end. On the profile, we like how the strong arching character lines that flow over the front and rear wheel wells intersect in the middle of the car and then taper off. At the rear, a short decklid rounds off a very clean design with taillamps that are indeed reminiscent of the larger Mazda6.
We can't yet confirm powertrain details (or any other specifications, really), but we fully expect the same 2.0-liter and 2.5-liter Skyactiv-G engines to carry over from the hatchback, as well as the six-speed automatic and manual transmissions.

Mazda returning to top-tier racing with diesel-powered prototype in USCC

Mazda has unveiled its latest challenger in the top flight of endurance racing, a diesel-powered prototype that will campaign the inaugural, 2014 Tudor United SportsCar Championship. The new Skyactiv-D-powered car will make its race debut at January's Rolex 24 at Daytona.
"This is the most significant step Mazda has taken towards returning to the global racing stage since our overall victory at Le Mans in 1991," said the director of Mazda Motorsports, John Doonan. That historic racecar, the rotary-powered 787B, has grown to become one of Mazda's many, well-known racers.
More recently, the Japanese brand has been making waves in the Grand-Am series, campaigning RX-8s and, most recently, running diesel-powered Mazda6 sedans in the GX-class. Mazda will campaign two factory-backed prototypes at Daytona. Driver lineups will be announced closer to race day.