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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.

Mazda Raceway gets first new MX-5 Cup as pace car

Mazda's motorsports department officially finished the first example of its new MX-5 Cup racer. But while the rest of the fleet will be used in the Global MX-5 Cup championship, this initial unit has been designated for another purpose. It's been dedicated to serve as the new pace car for Mazda Raceway Laguna Seca. Based on the latest ND-generation MX-5, the Cup racer was previewed in racing spec this past November ahead of its debut at the SEMA show. Though we've still yet to see the final spec sheet, it clearly benefits from key upgrades to the rolling stock, not to mention the added roll cage, racing buckets, and more. The pace car also features emergency lighting and a livery designed by Mazda and applied by Sticky Fingers Design out of Huntington Beach, CA. The beefed-up little roadster will join a cadre of pace cars used at the legendary Northern California circuit. Other pace cars in the fleet include a Mazda6, RX-8, CX-5, and the previous Miata. The season is winding to a close at Laguna Seca, with the Pirelli World Challenge finale and Mazda Road to Indy still set to take to the track next month. Related Video: MAZDA RACEWAY IS READY TO PACE THE FUTURE MONTEREY, Calif. (August 13, 2015) – Mazda Motorsports used the annual car-fest known as the Rolex Monterey Motorsports Reunion to roll out the first production 2016 Mazda MX-5 Cup race car. This particular vehicle is guaranteed to lead races as it will be the newest pace car in the Mazda Raceway Laguna Seca fleet of Mazda safety vehicles. The 2016 Mazda MX-5 Cup race car follows a 26-year history of the MX-5 Miata in motorsports. The first race cars to be sold to customers will be used in the 2016 Global MX-5 Cup, known in the U.S. as the Battery Tender Mazda MX-5 Cup. With the 2016 racing season still many months away, placing the first production race car into pace car duty allows Mazda to gather additional durability data while showcasing it in front of one of the most influential motorsports crowds of the year. "For Mazda, this weekend is the perfect blend of past, present, and future," noted John Doonan, director of motorsports for Mazda North American Operations. "We are celebrating our motorsports heritage on the track with our vintage race cars.

2016 Mazda CX-5 keeps it simple

Take a long, hard look, folks. This is the refreshed 2016 Mazda CX-5, which makes its debut at the Los Angeles Auto Show today. And if you're thinking, "Say, that looks just like the old one," you really aren't alone. The visible updates certainly aren't major - Mazda has instead focused on giving the already-good CX-5 some thoughtful upgrades to make it a more attractive package than ever.
Outside, there are some slight changes to the styling, including new LED light signatures at the front and rear, as well as redesigned foglamp housings. Uplevel models also ride on attractive new 19-inch alloy wheels, with a dark finish.
Under the hood, it's all the same. Mazda's Skyactiv 2.0- and 2.5-liter four-cylinder engines carry over, with 155 and 184 horsepower, respectively. Front-wheel-drive, 2.5-liter models get a small bump in fuel economy, too - the CUV is now rated at 26 miles per gallon city and 33 mpg highway, up from 25/32. Models equipped with the automatic transmission now benefit from different drive modes, as well.