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Mazda Skyactiv-X Review | The revolution begins with a squeeze-bang

The matte black Skyactiv-X prototype looks like a rough Mazda3, perhaps reconstructed after a bad wreck by an over-enthusiastic owner of a spot welder and lots of gaffers' tape. Ribbed ducts poke out of the dash sending two breaths of conditioned air to no one in particular. Even its revolutionary engine, the thing we're here to experience, is entombed in a massive, nondescript cover to mask its unseemly noises. It's a wild, strange way to meet a very unconventional vehicle that promises diesel-like fuel economy, a wide torque band, and an exotic method for burning less gas than ever before. It takes a few hours for Mazda's engineers to explain the fundamental principles of operation. For more detail, read our Skyactiv-X Spark Controlled Compression Ignition explainer, but here's a very brief overview. Skyactiv-X marries some traditional gasoline engine characteristics with a novel form of compression ignition called SPCCI. The key for Skyactiv-X is to use very high compression in the cylinder and an extremely lean fuel-air mixture. Squeezed right to the cusp of getting hot enough to blow up all on its own (which is very hard to predict), a squirt of extra gas and a spark interject to cross that compression-ignition threshold in a controlled and predictable manner. See the animation below: That takes a few essential components to get just right. One is a massive amount of computer processing power and some pressure sensors in the individual cylinders, because the ambient conditions change how and when these things happen. Skyactiv-X uses a clutched supercharger to pump in additional air when needed to nail the mixture precisely, and high-pressure injectors to get the low ratios of fuel to disperse properly in the chamber. And since it operates like a conventional gasoline engine sometimes, it uses valve timing to lower the very high compression ratio so it doesn't reach combustion ignition in that mode. In practice, the Skyactiv-X runs in compression ignition mode most of the time. In practical terms, that means it drives like a torquey gasoline Skyactiv engine. The torque curve is broad and flat — diesel-like in that respect. That also means it can get away with using a six-speed transmission and a lower final drive for better response. There's enough grunt and economy together that Mazda can let the engine spin faster — at 60 mph, it's running at roughly 1,000 more RPM than a similar gas engine, with greater efficiency.

How Mazda got Skyactiv-X to work is incredible

"Take everything you know about engines and turn it around," Mazda North America Vehicle Development Engineer Dave Coleman says, patiently and with a look of benevolent pity, as he's quizzed about the particulars of the company's new engine. The Skyactiv-X engine is enigmatic — and deceptively simple in operation. And the bottom line for American consumers is that they'll be able to buy a car (or crossover; we don't know yet what vehicle will first get it) by late 2019 that provides diesel-like fuel economy but runs on regular old gasoline. In between diesel and spark ignition, but it's neither To truly understand it, you have to dive into the contradictions. Take that regular old gasoline: Contrary to common sense, the lower the octane, the better it works. In the lab, the Skyactiv-X engine loves 80 octane. The lowest Americans get is 87, so the engine is tuned for that octane. Go higher and you lose some low-end torque. Coleman was right. It's hard to wrap your head around an engine that thrives just at the point when most gas engines would aggressively self-destruct. It uses a supercharger to pump additional air — but not additional fuel. It uses spark plugs to start a combustion cycle that normally doesn't need a spark. And, quixotically, it's not displacing Mazda's own American-market diesel engine, currently languishing in a seemingly endless hell of regulatory approval. More bizarre: Mazda is a tiny automaker facing real existential headwinds, and gasoline compression ignition is a massive challenge. GM and Hyundai announced compression ignition, or HCCI, projects (full name, homogeneous charge compression ignition) to great fanfare, but they never amounted to a production hill of beans, crippled by reliability issues or horrible vibrations. Worse, they only worked at an unusably narrow range — low RPMs and low loads. HCCI research improved direct-injection gas and diesel engine technologies for these companies, but HCCI itself remains untamed. The benefits of lean combustion Why even try to tame HCCI? The answer is much better fuel economy and lower emissions. Less burned carbon-based fuel, less carbon dioxide released. That's simple. But there are some thermodynamic reasons for the lean combustion you can achieve with compression ignition that are worth explaining. The ideal amount of fuel for a conventional engine to burn is about a 14:1 air-to-fuel ratio. That lets every molecule burn nicely, in theory.

Mazda rotary engine returning, in an autonomous Toyota delivery vehicle

With the return of the Toyota Supra, the Lotus Esprit and Mazda RX-7 probably share the trophy for hardcore sports cars we'd most like sequels for. The Esprit's too hopeless to consider. Mazda continues to speak in riddles about a new RX-7, but the company has confirmed that the RX-7's heart will return: The company's building a rotary-engined range-extender engine for an autonomous Toyota. At this year's Consumer Electronics Show, Toyota announced its e-Palette autonomous electric delivery vehicle. The e-Palette will come in bus, shuttle, and car versions to service the delivery needs of companies like Amazon, Pizza Hut, and Uber. They'll also be built in custom configurations such as mobile hotel rooms and emergency command centers. Toyota owns 5.25 percent of Mazda, the two automakers recently signed a deal to open a factory in Alabama, and Mazda's known for ace work with small engines. It's not surprising that Toyota chose Mazda for help with the e-Palette, but the rotary aspect is novel. Mazda U.S. president Masahiro Moro said, "This is a very suitable engine to run a generator because it's compact and lightweight, with no noise or vibration, and it has very good fuel economy." There have been rumors of this development previously, as far back as 2016, then again last October in reference to an electric architecture Mazda intended for release in 2019, but Toyota was never mentioned. As to pining for that RX-7 redux, Mazda's head of powertrain said the company's overcome the technical issues of a sports-car-sized rotary engine — the challenge is making a business case for such a sports car. We think the RX-VISION made the case three years ago, and it's already fitted with the Skyactiv-R rotary. Separately, a Toyota spokesman added that the two companies are looking into whether the rotary can be useful beyond the electric car. That's not much to go on when it comes to pining for another RX-7, but hope lives on a scanty diet. Related Video:

Toyota, Mazda get an Alabama welcome for $1.6 billion plant

MONTGOMERY, Ala. — Toyota and Mazda confirmed Wednesday they will build a $1.6 billion joint venture assembly plant in Alabama that will employ up to 4,000 workers, a boost for President Donald Trump who wants automakers to expand U.S. production. Toyota President Akio Toyoda and Mazda President and Chief Executive Officer Masamichi Kogai joined Alabama Gov. Kay Ivey in Montgomery at an event to confirm the decision. "Welcome to sweet home Alabama," Ivey said to the two executives, after saying that the anticipated 4,000 workers at the plant to be built in Huntsville would earn an average of $50,000 a year. The plant will produce 300,000 vehicles a year and should open on a 2,500-acre former cotton field in 2021, about 14 miles from Toyota's engine plant in Huntsville. Toyota plans to build Corolla cars at the plant, while Mazda will build crossover SUVs. "Together, I am confident we will create yet another 'Built in America' success story," Toyoda said. Alabama will provide tax incentives. Officials said the state tax incentives were worth $370 million, but they did not disclose how much the local incentives were worth. Huntsville Mayor Tommy Battle said the plant will "provide jobs for decades to come for Huntsville and Alabama. It vaults Alabama to the top as an industry leader in producing the next generation of cars that will power our nation." Among U.S. states, Alabama is already the fifth largest producer of cars and light trucks. The state has more than 150 major auto suppliers and 57,000 automotive manufacturing jobs. Two decades ago, Alabama spent an estimated $250 million to woo Daimler AG's Mercedes-Benz to put an auto plant in Tuscaloosa, sparking the birth of auto production in the state. In September, Daimler said it would invest $1 billion to expand its Alabama Mercedes-Benz plant to start building electric sport-utility vehicles there from about 2020. Alabama is also home to assembly plants operated by Honda and Hyundai. A Kia assembly plant operates near the Alabama border in Georgia. Mazda and Toyota said they still need approvals and authorization by antitrust agencies for the new joint venture. They announced a capital alliance in August and plans to jointly develop technology for electric vehicles. Trump tweeted in March he wanted "new plants to be built here for cars sold here." Many automakers have announced expansions of facilities or new jobs but no other new U.S. auto plants have been announced. U.S.

Mazda6 AWD: More evidence surfaces

Last month, we learned that Mazda was seriously considering adding all-wheel drive to the Mazda6 line-up due to high demand. Now, more evidence has surfaced that an all-wheel-drive Mazda6 could be coming sooner than later. As first reported by Motor Trend, the National Highway Traffic Safety Administration website has listings for both the 2018 Mazda6 with the standard front-wheel-drive powertrain and a 2018 with all-wheel drive. Clicking on the all-wheel-drive link reveals that it has the exact same safety ratings and features listed as the front-wheel-drive model. Both pages also have links to the same technical data sheets, all of which are for the 2016 Mazda6. This is the case with the 2017 model listed on the NHTSA site, too. Naturally, this by no means confirms that Mazda is bringing an all-wheel-drive version to the United States. It's possible the inclusion was a mistake, or someone might have even typed an "A" instead of an "F" when creating that page. But also considering Mazda's interest in offering all-wheel drive, the existance of all-wheel-drive Mazda6 variants overseas, and the likely minor technical hurdles to overcome, we'd say the odds are pretty solid that we'll see four driven wheels in a Mazda6 in the near future, even if not this model year. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Featured Gallery 2018 Mazda6: LA 2017 View 16 Photos News Source: NHTSAImage Credit: Drew Phillips Rumormill Mazda Safety Sedan

Toyota, Mazda $1.6 billion plant goes to Alabama, sources say

Alabama will be the site of a new $1.6 billion Toyota and Mazda auto plant, a victory for President Donald Trump who had prodded manufacturers to build new U.S. facilities and threatened tariffs on foreign production, sources said on Tuesday. The plant, which will employ up to 4,000 people and produce about 300,000 vehicles a year, will be located in Huntsville, Ala., and is a boon for the state, where Toyota has a large engine plant and an existing network of automotive suppliers. A formal announcement by company and state officials is expected on Wednesday in Montgomery, sources briefed on the matter said. The new plant — in a state Trump won by 28 points in 2016 — could be a political boost to the Republican president, who has urged automakers to build plants in the United States and add jobs. The companies said they expect the plant to open in 2021. Trump tweeted in March he wanted "new plants to be built here for cars sold here." The White House did not immediately comment on Tuesday. The announcement also comes at a time of declining U.S. auto industry sales, so it could exacerbate overcapacity and add pressure to cut prices. U.S. new vehicle sales fell 2 percent in 2017, after hitting an all-time record high in 2016, and are expected to fall further in 2018. Details of an anticipated tax and incentive package for the investment were not yet known. It has been reported the companies sought at least $1 billion in incentives. A Toyota spokesman declined to comment, except to say an announcement was expected soon. A Mazda spokeswoman also declined to comment. In recent months, the companies had narrowed their choices down to sites in Alabama and North Carolina. Local media last month said the leading site under consideration was in northern Alabama's Limestone County, near Toyota's large engine plant in Huntsville. In September, Toyota announced a $106 million technology upgrade for the Huntsville plant. A Chamber of Commerce of Huntsville website for the "Huntsville Mega Site" touts the fact it has been "certified as development-ready." The commerce chamber, local and state officials declined to comment on Tuesday on plans for the plant. A year ago, President-elect Trump criticized Toyota and threatened hefty tariffs against the Japanese automaker if it built its Corolla sedan for the U.S. market in Mexico. "Toyota Motor said will build a new plant in Baja, Mexico, to build Corolla cars for U.S. NO WAY! Build plant in U.S.

Toyota Yaris iA, Mazda CX-3 sales show crossover formula isn't an automatic win

While 2017 was another watershed year for crossovers, in one interesting case, a crossover had its lunch eaten by its sedan counterpart. In the past year, Toyota sold nearly 36,000 Yaris iAs, a sedan that is identical to the foreign-market Mazda2 in everything but Toyota's ugly front bumper. In the same time frame, Mazda sold just over 16,000 CX-3s, a subcompact crossover based on the Mazda2. Not only that, but the Yaris iA saw an increase of around 8,000 units over 2016, and the CX-3 sold about 2,000 fewer units than in 2016. View 29 Photos There are a few reasons this is surprising. First of course is that the crossover market is surface-of-the-sun hot right now, so much so that primarily crossover-building brand Subaru saw its best sales year ever last year. Even Mazda's other crossovers, the CX-5 and CX-9 saw better sales in 2017 than in 2016. But on paper, the CX-3 has a number of advantages compared to the Yaris iA. The CX-3 has a larger 2.0-liter four-cylinder that makes about 40 more horsepower than the 1.5-liter engine in the Toyota. Also, while the cargo area behind the rear seats in the CX-3 is about one cubic foot smaller than the iA, it has the added flexibility of being a hatchback, and thus having more capability when it comes to large, bulky items. And of course, the CX-3 is quite a shapely machine compared with the awkward, angry-looking iA. That's not to say the iA doesn't have any of its own advantages. It gets 3 more mpg in the city and 6 more on the highway than the CX-3. It also costs roughly $3,000 to $4,000 less than a CX-3 and can be found at more dealers than the Mazda. But it's still surprising that a car, especially a sedan, can outsell a mechanically very similar crossover. Apparently the formula of adding more ground clearance and plastic fenders isn't foolproof. Then again, maybe it's not such a big deal to Mazda, since the CX-3's total sales were just over a tenth that of the Mazda CX-5. Related Video:

Hiss off! Venomous snake takes refuge in Australian man’s engine bay

A man who went out for a walk in suburban Sydney got quite a surprise when he returned to his red Mazda. Left on his windshield was a hand-written note warning him that a venomous red-bellied black snake had taken up residence in his car. "Hi," the note read, "this afternoon a red Belly slithered up into your front left tyre. Please be careful." The snake is a native of wet areas of eastern Australia that can grow up to 2.5 meters (about 8 feet), making it one of Australia's largest venomous snakes. They're considered dangerous, but shy, unlikely to bite unless severely agitated. When Michael Garbutt popped the hood, he found the snake coiled up inside in the corner. "To say I was shocked is an understatement," he told The Sydney Morning Herald. "On reflection I don't think I would have put my hand out to pop the bonnet if I had known it was there." So he took to Google to look for a local snake wrangler and found Andrew Melrose, of Shire Snake Catchers. By the time he arrived, the snake had moved down into the engine. Then it moved behind the wheel guard, and then under the engine to the front bumper, then back to the right front wheel. Melrose said he coaxed it out by gently touching its body. "I've done it my whole life," he said. "It looks simple but if you haven't done it before you can get killed real quick." In the end, Melrose ended up grabbing the snake from the ground outside of the car and dropping it in a bag. The whole de-snaking process took about an hour. Melrose said the snake is common on the swampy peninsula area where it was found, since it finds plenty of frogs, eels and other creatures to eat. He says it's common to find them in cars. "If they get startled they look for the first place that is safe," he said. "The place I found it was very bare. There was no place for the snake to escape. People would have startled it and the only place for it to hide was the car. The driver could have driven off unaware and parked and the snake would have left the car when it felt safe." So let this be a lesson for you, Autoblog readers: familiarize yourself with your local venomous snakes. And keep the number of your local snake wrangler handy at all times. Or just don't move to Australia.Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Image Credit: Unknown Auto News Weird Car News Mazda snake

2018 Mazda Miata adds a cherry on top

For 2018, Mazda is adding a number of new options that should get the attention of prospective Miata buyers, and one of them is shown above. Starting with the new model year, Mazda will offer both the usual black soft top, but also a "Dark Cherry" red top. It looks quite sharp with the silvery-blue color above, and it should be an excellent complement to the Grand Touring model's newest interior option. On the Grand Touring trim, customers can choose the reddish-brown Nappa leather interior that was first applied to the Miata RF Launch Edition. The interior package adds $300 to the top-trim Miata's price tag. There are a few other upgrades sprinkled throughout the Miata lineup. The base-level Sport models will finally get infotainment with a 7-inch screen instead of the little stereo controls mounted to the dash. The midrange Club model now gets heated cloth seats that are upgraded to heated leather units with the Brembo/BBS package, which for $3,770 adds Brembo brakes, BBS wheels, a body kit and the aforementioned seats. Another $700 nets the same package but with Recaro seats that also feature seat heaters. Along with the new features come slight price increases across the board. The base 2018 Sport trim now starts at $26,185, an increase of $395. The Club increases in price by $370 to $30,045, and the Grand Touring has the smallest change of $145 to $31,085. The first 2018 soft-top Miatas will arrive at dealerships this month, and should be available everywhere in January. Related Video: Image Credit: Mazda Mazda Convertible Performance mazda mx5

Mazda files patents for a sequential twin-turbo setup

Mazda has a history of interesting engine technologies, from yesterday's rotary engine to tomorrow's compression ignition engine, and new patents show it still may have some internal combustion tricks up its sleeve. The one on display in these patents isn't especially new in concept, though. A sequential twin-turbocharger setup is something Mazda itself used on the third-generation RX-7. But it's something we haven't seen much of lately. It looks like it could have some possible advantages over older sequential systems, and it has some potential advantages for enthusiasts. First a quick and dirty primer for what makes a sequential twin-turbo system distinct from other twin-turbo systems. In many twin-turbo engines, there are simply two turbos that work together as one bigger turbo. They're the same size, and they spool up at the same time. With a sequential setup, at low rpm, a smaller turbocharger is spooled up first at low-rpm for quicker throttle response, and as the rpm and exhaust pressure increases, a valve opens up that allows a larger turbocharger to also spool up and provide high-rpm boost. That's basically how the Mazda design shown above functions. A big flap blocks off the larger turbocharger exhaust inlet, channeling all the exhaust to the smaller turbo. When more exhaust is available at high rpm, it looks like that flap opens up to spool up the big turbo, too. What's interesting here is that the way the turbochargers are packaged takes up less space than past systems. It looks like both turbos are contained in one unit that shares the same exhaust outlet, meaning the exhaust manifold could be kept simple and compact. In fact, the piping for compressed intake air could also be shared, reducing the amount of piping, which would further decrease the amount of materials and possible failure points. There are a number advantages of making this system smaller. The potential applications of the system are much greater, since it could fit in smaller cars with smaller engine bays. Making the system smaller also means that there won't be as much weight, which is important from both fuel economy and performance standpoints. Finally, the smaller setup likely uses fewer materials, which could make the system cheaper and thus easier to offer on a wider range of vehicles, or at least more profitable for Mazda.