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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.

Fiat 124 spied with top down

With fall officially here, the days are rapidly running out for much of the country to put the top down and enjoy a convertible. Fiat apparently wants to take advantage of the good weather while it lasts, given these fresh spy shots of the 124 Spider testing with the roof down. In terms of styling, these photos show the droptop with an extremely similar look to the ones from July. The roadster still appears to have rounded headlights and a wide grille up front, which the kidney-shaped cladding does nothing to hide. The hood bulge continues to be there, too, and so is the spiderweb-pattern camouflage. However, these new shots let us check out the roll hoops that are visible with the top out of the way, and we even get to see the manual roof in operation. Also, note there are now dual exhausts at the rear, rather than the quad tips from before. Underneath all this camo and cladding, we know that the 124 Spider shares underpinnings with the new Mazda MX-5 Miata. The engine remains a mystery, but competing rumors suggest the 1.4-liter turbocharged four-cylinder from the current 500 Abarth or the 1.7-liter turbo four from the Alfa Romeo 4C. Thankfully, an answer might not be too far away because the roadster is mooted to debut this year, possibly at the Los Angeles Auto Show in November. With the latest Miata receiving high praise from critics, the motoring world soon gets to find out whether Fiat can find any room for improvement. Related Video:

Mazda spiders return, 42k Mazda6 sedans recalled for webby fuel tanks

It seems that Yellow Sac spiders really, really love Mazda. Three years after Mazda recalled 52,000 Mazda6 sedans over spider webs obstructing the evaporative canister vent lines of 2009 and 2010 Mazda6 models, another recall has been issued for 42,000 more of the models built between 2010 and 2012 and equipped with the 2.5-liter four-cylinder engine.
According to the automaker, there have been nine confirmed sightings of spiders in vent lines since the original recall. It seems that covers were applied at the factory to keep the arachnids from entering, but it hasn't quite exterminated the problem. A reflash of the ECU is required that "[changes] the logic behind how the car purges the charcoal canister during normal operation," says Jeremy Barnes, Director, Public Relations & Brand Experience at Mazda North American Operations.
So far, Mazda has not recorded any fires, accidents or injuries due to this tangled mess of webs. Recall notices will be mailed out to owners later this month. Scroll down below for the statement from Mazda, along with the official recall notice from the National Highway Traffic Safety Administration.