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Mazda engineers say current Skyactiv-X might not suit U.S. market

We've been watching Mazda roll out the 2.0-liter four-cylinder Skyactiv-X engine in Japan and Europe, waiting our turn. When European authorities released fuel economy information for the high-tech motor last June, we wrote, "Mazda has yet to make an official decision on timing for the U.S market's launch of the engine." Automotive News spoke to Mazda engineers in charge of the powertrain, and based on the answers AN got, the question might not be when we get the Skyactiv-X, but if. Seems that the automaker now isn't certain whether the cost/benefit analysis for the U.S. market favors the engine, and there's concern the 2.0-liter might not be powerful enough for us with its current output of 178 horsepower and 186 pound-feet of torque. At the moment, our Mazda3 is served only with a 2.5-liter Skyactiv-G engine producing 186 hp and 186 lb-ft., not too far ahead of the Skyactiv-X. The Skyactiv-X would return better fuel economy, but requires a noteworthy price premium over the Skyactiv-G. The Truth About Cars says the Skyactiv-X has become the top-seller in the Japanese-market Mazda3, even though it costs 27% more than the base, 2.0-liter Skyactiv-G for a 9% improvement in fuel economy. Mazda's not sure U.S. customers would care much for that kind of math. Engineer Yoshiaki Yamane told AN, "Maybe U.S. customers require more power, because fuel economy is not the top requirement." There isn't much Mazda can do about the tech-heavy engine's cost, since pricey equipment like the high-pressure fuel injection and combustion systems, supercharger, three-way catalyst, and 24-volt mild-hybrid system provide the mileage gains that are the engine's reason for being. Instead, engineers are researching the system's effects with larger displacements. If it works as desired, a larger and more powerful Skyactiv-X could come to the U.S. on the large-vehicle architecture Mazda's developing for new sedans to arrive in a couple of years. That's the hope, at least. Remember, Mazda's Skyactiv-D was meant to go into the 2014 Mazda6, but didn't because Mazda said it needed more time to find "the right balance between fuel economy and Mazda-appropriate driving performance." After five years of "Soon," the engine showed up on the 2019 CX-5 that starts at $42,045. Based on that template, it could be awhile before we know how the U.S.-market Skyactiv-X story ends. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences.

Alfa Romeo takes Spider in-house, Mazda-Fiat roadster partnership not dead

It's officially off. Following a report in March of this year that the marriage of Mazda and Alfa Romeo to produce a MX-5-based Spider was in trouble, the Italians have confirmed that it will take development in-house. "As far as the Spider goes, the final version is of course no longer the two-seater FCA co-developed with Mazda but a derivative of Project Giorgio," Maserati and Alfa Romeo brand boss Harald Wester told Car. For those not in the know, Project Giorgio is Alfa's codename for the rear-drive platform that will underpin the next-generation Spider, not to mention the replacement for the 159 sedan and a few other products. All is not lost for the Japanese-Italian partnership, though. "The Far East import will probably find a new home with Fiat-Abarth," Wester told Car. Yes, you read that correctly, Mazda is still working with FCA, and the result will eventually end up with Abarth's scorpion badge. If anything, we're more excited over this news than the idea of an Alfa MX-5. But we want to know what you think – would you rather Alfa build a new Spider on the Miata's bones, or does an MX-5 Abarth sound like more fun? Have your say in Comments.

Mazda files patent applications for inline-six technology, new transmission

We've known for some time that Mazda is one of the OEMs getting back on the inline-six engine bandwagon, and a report from Japan gives us a glimpse of some of the automaker's plans. Mazda has filed patent applications for both new exhaust components (depicted with an inline-six) and a new eight-speed automatic transmission.  The news comes from a blog called T's Media (fire up Google Translate), which located the new hardware in two separate fillings, one for exhaust system components and one for the new transmission.  Mazda's lineup has been exclusively powered by four-cylinder engines since the demise of the last-generation CX-9, which utilized a 3.7-liter V6 sourced from Ford. Since, Mazda has relied on turbocharging to get more power out of its SkyActiv four-pots, but changes may be coming. Prior reports have indicated that Mazda wants a new, larger engine architecture to power vehicles built on a new, larger platform. This new chassis is expected to accommodate longitudinal, rear-wheel drive powertrains, which could spawn larger crossovers and SUVs. It could also potentially underpin a new rear-wheel drive coupe, if Mazda decides to go that route.  While the inline engine itself is not news, what we're seeing here might actually be hints as to Mazda's approach to the next generation of its SkyActiv engine architecture. Mazda's exhaust patent seems to describe a scalable — perhaps even modular — setup intended to be used with inline and potentially even V-engines.  "Provided is an engine exhaust structure capable of securing exhaust efficiency while reducing the size of the engine by changing the structure of an exhaust port," a translation of the patent application's introduction says. "[T]here has been proposed a technique for collecting exhaust gas discharged from each cylinder inside a cylinder head without using a separate exhaust manifold with the aim of downsizing the engine." In other words, Mazda is looking for ways to make its future engines more compact, and the strategy detailed here is the use of an integrated exhaust manifold, similar to what other automakers (such as Honda and Ford) have utilized on their smaller-displacement turbocharged engines. The sketch above of an inline-six engine with just two exhaust ports illustrates this concept.  The eight-speed transmission, while noteworthy in its own right as Mazda currently relies on aging six-speeds, doesn't seem to offer us anything particularly game-changing.  Related Video: