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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.

2015 Mazda2 revealed ahead of Paris debut [w/videos]

Small cars may be big business, but the world's automakers don't seem to be in any particular rush to keep them fresh. The new Smart Fortwo unveiled yesterday replaces a model that's already been around for seven years, and based on a structure dating back to the late '90s. The new Opel Corsa revealed just last week replaces a model that had been around for eight years. And the Mazda2 has been on the market in its current form for seven years now, but not for much longer because Mazda has finally revealed its successor.
Set to be unveiled at the Paris Motor Show this October, the new Mazda2 follows the stylistic lead of the Hazumi concept remarkably close, from the sharply creased front end right down to the wheel design - bringing the supermini hatchback in line with the KODO design language that characterizes its bigger siblings: the Mazda3, Mazda6 and CX-5.
Although details released thus far are rather limited, and power will vary from one market to another, engine options center around a 1.5-liter four in both gasoline and diesel versions, joining the manual and automatic transmissions and the chassis itself under Mazda's Skyactiv technology umbrella. We wouldn't expect the diesel version to make it across the Pacific (or across the border from the plant that will build it alongside a new Toyota hatch in Mexico), but rumors have surfaced of a potential rotary hybrid. The new 2 will also include the company's MZD connectivity suite and i-Activsense safety technology.

Mazda recalling 18k Mazda6 and RX-8 models over airbag inflators

Faulty Takata airbag inflators keep taking their toll on automakers. Mazda is the latest to be affected in the US by announcing a recall covering 18,050 Mazda6 and RX-8 models to replace the front, passenger-side airbags. Specifically, the campaign covers 18,000 Mazda6 units from the 2003 and 2004 model years built between May 29, 2002, and March 4, 2004, and 50 RX-8 vehicles from the 2004 model year made between June 25, 2003, and June 30, 2003.
As with the rest of the vehicles with these faulty inflators, it's possible for the part to rupture when deploying the airbag and potentially spray shrapnel at the occupant. Mazda's defect notice goes into a bit more detail than most about the problem saying: "some propellant wafers have been produced with an inadequate compaction force, or may have been exposed to uncontrolled moisture conditions (those wafers could have absorbed moisture beyond the allowable limits)."
This isn't Mazda's first difficulty with Takata-supplied airbags this year. The company was among the seven automakers that recalled vehicles in hot-weather states over the inflators. It also had to recently fix 42,000 Mazda6 vehicles in China over the issue.