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Mazda Miata speedster and spyder concepts set for SEMA

Mazda will show speedster and spyder concepts based on the 2016 MX-5 Miata next week at SEMA in Las Vegas. The speedster is at the top of the teaser, and the spyder is the bottom half. The speedster goes with an extreme lightweight design. It has only a small wind deflector in place of the windshield and a blue ether topcoat. The spyder is a vintage roadster rendered into a modern form with a handcrafted leather interior and mercury silver paint job. Both are lighter than the production version and will be sure to get the hearts of Mazda fanatics and roadster enthusiasts alike racing at the possibilities. We doubt either will actually see production, like so many Miata-based concepts of the recent past. But that won't stop us from dreaming all the same. MAZDA TO SHOWCASE LIGHTWEIGHT PERFORMANCE AT SEMA WITH TWO MX-5 MIATA CONCEPTS - MX-5 Spyder and Speedster Concepts Bring Vintage Cues into Modern Designs - IRVINE, Calif., Oct. 29, 2015 -- The Mazda MX-5 Miata has been an exercise in honing the concept of a lightweight sports car for more than 26 years, created solely for driving exhilaration. But for the 2015 SEMA Show at the Las Vegas Convention Center, Mazda designers wanted to see what they could do if that idea was taken to the extreme. What they created were two vastly different takes on the fourth-generation MX-5: The 2016 MX-5 Spyder Concept and 2016 MX-5 Speedster Concept. MX-5 Spyder captures the character of a vintage roadster and translates it into a modern-day design, including bespoke leather interior details that were painstakingly crafted, and featuring a new Mercury Silver concept paint color. MX-5 Speedster is a study in the extremes of lightweight, purpose-built performance, paying homage to minimalist roadsters of the 1950s. The Blue Ether-painted MX-5 Speedster is uncompromised in its approach to wind-in-the-hair driving, going so far as to eschew a traditional windshield for a lighter deflector. Both cars are significantly lighter than the 2,332-lbs. MX-5 roadster that customers can purchase at dealers and come with a host of conceptual and aftermarket pieces and fabrication from partners including Racing Beat, Haartz Corporation, ASC – American Sunroof Corporation, Makin Industries/RAYS Wheels, KW Suspensions, Delta Seat, H&R Springs, Lusch, AC&A Manufacturing, Franks Fab Shop, Long Road Racing and SIM Specialty Interior Manufacturing.

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 Miata getting i-ELOOP regenerative 'braking' in more markets

The Mazda MX-5 Miata is getting the company's i-ELOOP regenerative "braking" system in more overseas markets. A few months ago, the company announced it for the Japanese market, and this week it announced the U.K. will have the feature, too. This has us curious as to whether it will be offered on U.S. market Miatas. We've reached out to Mazda, and we'll update this story if and when we hear back. As a quick refresher, i-ELOOP is a system that was introduced here on the Mazda6 several years ago, and it adds a capacitor to store electricity generated by the alternator during deceleration (hence our earlier use of quotes around "braking") that can be used to run interior accessories such as the sound system and climate control. Then, with power coming from the capacitor, the alternator can be disengaged, improving the efficiency of the engine by reducing drag. And by using a capacitor rather than a battery, the system is more compact, lighter and able to recharge faster than a similarly capacious conventional battery. As for effectiveness, the Mazda6 with i-ELOOP managed to get about 5% more miles per gallon on the highway than one without, going from 38 mpg to 40 mpg. While not a massive improvement, it was a measurable, possibly noticeable one. Applying a similar gain to a Miata would increase fuel economy from 35 to nearly 36.75 mpg on the highway, based on the automatic-equipped car's numbers. The manual would go from 34 to nearly 35.7. The i-ELOOP system is standard on all new Miatas in the U.K., which includes the 1.5-liter and 2.0-liter engines with either the manual transmission or automatic. Strangely, only automatic-equipped cars get it in Japan. This means Mazda could offer it on both transmission options in the U.S. Probably the key consideration will be cost. The system, when it launched in the U.S., was only available on the most expensive Mazda6, and even then it was an extra-cost option. And looking at pricing for the U.K. Miata soft-top and comparing equivalent trim levels, the price has increased between GBP2,800 and GBP4,100. The new model does get some new standard safety features, too, but we expect the i-ELOOP system is a significant contributor. If it is offered in the U.S., it might only be available as an option, and possibly only on the more expensive trim levels to keep lower trims more affordable. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.