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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.

Will Mazda sell diesel hybrids in Japan in 2016?

Could the "Zoom Zoom" automaker start making hybrids that go "glug glug glug"? Mazda, known for its fuel-efficient Skyactiv engine line, will be the first Japanese automaker to make a diesel-hybrid vehicle for Japan and Europe. According to the Yomiuri Shimbun, Mazda may start making its oil-burning hybrids as soon as 2016, and the powertrain may reach fuel efficiency levels of as much as 95 miles per gallon (one the more lenient Japanese driving cycle). That'd make such a vehicle line about 30 percent more fuel-efficient than standard diesels and about eight percent more fuel efficient that the Toyota Prius C compact hybrid (known as the Aqua in Japan). Mazda has been dismissive of hybrid and electric powertrains, instead focusing on Skyactiv technology to maximize fuel efficiency from conventional gas-powered engines. Diesel powertrains account for about half of the light-duty vehicles sold in Europe each year, while Japan's diesel sales of 76,000 vehicles last year were about three times as many as were sold there in 2012. In January, Mazda said that it would delay the introduction of its Skyactiv-D diesel engine from what was to be a spring 2014 debut. The reason was to fine-tune the engine's performance/fuel economy balance. Mazda representatives didn't immediately respond to a request for comment from AutoblogGreen about the diesel hybrids.

2014 Mazda6 earns Popular Mechanics' 'Car of the Year'

Ring one up for Mazda. The Japanese brand's midsize offering, the Mazda6, has been named Popular Mechanics' Car of the Year. The 6 received a comprehensive reworking for the 2014 model year that saw it adopt sleek, sexy sheet metal; a clean, logical interior; and powertrain technologies that allow it to net some of the best fuel economy available in a gas-powered, non-hybrid sedan.
Popular Mechanics praised the 6's Skyactiv 2.5-liter, 184-horsepower engine, as well as its agility and responsiveness during testing. It also remarked on the functional, but well designed cabin, and the degree of available technology.
"The Mazda6 really impressed us with how well it delivers so many things modern car owners want: great mileage, fun road-handling, upscale features and looks - and remarkable value," said Jim Meigs, Editor-in-Chief of Popular Mechanics.