1995 Mazda Miata Base W/factory Hardtop on 2040-cars

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Fourth-gen Mazda MX-5 Miata could get turbo power later in life

While there's a lot to love about the new Mazda MX-5 Miata, its debut was met by a vocal group of enthusiasts who derided the fourth-generation roadster's reduction in power output. The new model only puts out 155 horsepower, down from 167 in the NC. A report from Australia, though, claims Mazda may yet address the less potent output of the ND. Things started earlier this year, as Motoring.com.au tells it, when Mazda's global PR boss, Kudo Hidetoshi, hinted that a turbocharged or Mazdaspeed model "will definitely" be considered. Then last month at Goodwood, the ND's program manager, Nobuhiro Yamamoto, said complainers were welcome to get their thrills elsewhere. Recognizing this contradiction among Mazda's brass, Motoring asked Yamamoto-san again about his statements, which he seemed to walk back. "It's not a conflict [between statements made by Yamamoto and Hidetoshi]," Yamamoto said, indicating that his statements were made in relation to the new MX-5's launch. "Kudo-san talked about this in terms of a 10-year lifespan, but when I was asked the question right after the launching of the ND, I said 'we have no plan to have a turbo at that point in time.' That is what I meant." Seeking an opening, Motoring pushed the Japanese engineer on the chances of a more potent MX-5, perhaps without a turbocharger. "If you could achieve what we want, to which is great response, very light and powerful with great performance feel with natural aspiration, then we don't need a turbo," Yamamoto said. "But if we want more power because we don't get satisfied with natural aspiration then we may think about the turbo." Related Video:

Mazda patents show rotary engine for range-extended EV

Two years ago, Mazda introduced a fascinating range-extended electric car called the Mazda2 RE Range-Extender. It took an electric Mazda2, and dropped in an itty-bitty 330cc rotary engine. It wasn't the rotary-powered sports car we had hoped for, but it seemed like a unique way to keep the quirky engine alive and kicking. But not long after the car's reveal, it seemed to disappear. Now the basic idea has resurfaced with a few modern updates in a couple of US patents. The first patent is pretty straightforward and describes a range-extended EV similar to the BMW i3. At the front is an electric motor driving the front wheels. At the back is an internal combustion engine that powers an electric generator. In the middle is a lithium-ion battery for storing and delivering electricity. It's the same set-up as that Mazda2. The second patent is for an engine start-and-stop system, but specifically for rotary engines. The system is designed to shut off a rotary engine when not needed, much as modern piston engines do. It also stops the rotor in a position that closes the intake port to ensure no fuel or exhaust emissions slip out through the intake tract. This is necessary since there are no valves in a rotary, and air and exhaust come through ports that are "opened" and "closed" by the rotor itself. The patent also describes the possibility of firing a spark plug after the fuel has been cut to eliminate any leftover fuel emissions. This system would theoretically improve a rotary engine's fuel economy and emissions significantly, which would be a boon as those are two of the rotary's major weaknesses. The rotary-engine patent also includes the same range-extended powertrain drawing as the first patent. It's there as a description of a possible application. And in such an application, where the rotary wouldn't have to run all the time, the system could take advantage of the rotary's inherent strengths. Weight can be kept low thanks to the engine's small dimensions, which should help in keeping the car sprightly and efficient. Rotaries are renowned for smoothness, too, so it shouldn't need too much refining and sound deadening, the latter of which adds more weight. The small size would also help with packaging, leaving more space for people, cargo, or possibly batteries. And since it has been patented, the company may be looking to bring the system to market.

Mazda teases its Tokyo-bound EV again — and it's a crossover coupe

Another 15-second teaser clip, the third so far, stars Mazda's coming electric vehicle in the role of coquette. This time we get a glimpse of the body shape, and coming as a shock to no one since Mazda practically admitted it, we'll be seeing a crossover coupe on the Tokyo Motor Show floor. Mazda says there'll be a few surprises therein, though. The overall line and detailing embody "an expansion of our renowned Kodo design philosophy" at the same time as the EV "explores new directions in design." And within the "uncompromisingly simple" form we're told to expect "a unique door concept, opening your mind." Another couplet in the press release poetry promises a "friendly expression" up front for a new segment entry embodying "futuristic values and changing lifestyles." Well then. This will be Mazda's fourth electric vehicle, but the first meant for mass production. The company built a small batch of the Mazda Demio (our Mazda2) battery electric vehicle in 2012 for the Japanese market, leasing them to government and corporate customers. The following year the automaker built a Mazda Demio EV prototype with a 330-cc rotary-powered range-extender engine. After that came the e-TPV prototype that the company's used to prove out the powertrain going into this month's show car.  The urban-focused electric runner should go on sale next year in markets like Japan, China and Europe, where dense city centers negate the need for sky-high range figures; the 35.5-kWh battery is likely to return a 150-mile range at most. As foretold in the most recent teaser, the interior will deliver an airy sense of space thanks to open spaces between the driver's and passenger's seats. Zoom-Zoom will come with EV internals, too — Autocar recently drove the eTPV prototype and lauded it for being "well-planted," "original to drive" and "more like a car in the traditional sense of the word."