2008 Mazda Miata Touring Convertible on 2040-cars

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What a 181-horsepower 2019 Mazda MX-5 Miata means for us, and you

Last month, we reported on a VIN filing dug up by Road & Track that showed that the 2019 Mazda MX-5 Miata's 2.0-liter Skyactiv-G engine would get a power bump, from 155 to 181 net horsepower. As for how the 2019 Miata would make that extra power, we heard rumors it'd utilize a new cylinder head allowing higher revs, accounting for that extra power. Now we have what appears to be a leaked document from Mazda Canada showing exactly where that extra power comes from. According to the document posted at Miata.net (registration required to see the image), Mazda will alter camshaft lift and valve size on both the intake and exhaust side, fit freer-flowing exhaust, and smooth and enlarge the piping on the air intake side. There are also internal engine modifications: lighter pistons with lower crowns for better swirl in the combustion chamber, lighter connecting rods, and a crankshaft balanced for higher-RPM operation. All those extra revs mean extra vibration and noise, so Mazda will ditch the single-mass flywheel for a "low-inertia" dual-mass flywheel – which will attempt to find a nice balance between DMF damping action and SMF directness. Overall, it's a pretty serious engine revision with some driveline changes that will heavily affect the driving characteristics of a fantastic driver's car. Contributing Editor James Riswick and Senior Editor Alex Kierstein, both well versed in Miatas past and present, are here to analyze what this could mean for the little roadster. James Riswick: I don't know much about them lighter crank combustion rods, but I for one welcome the news of more power to the Miata. The jump from 155 to 181 seems like a very prudent Mazda-like thing to do, accomplishing that task through various aforementioned technical wizardry as opposed to slapping on a turbocharger, exclaiming "yee-hah" and calling it a day. Alex Kierstein: That's true. I'm wary of additional power, but you do make a good point that at least this is the right way to do it. Going all-motor will keep the bright responsiveness of the engine intact. But higher revs might make power delivery peakier. Frankly, I'd be ok with moving the torque and horsepower peaks up a bit in the rev range, making it a bit more work to access the engine's sweet spot. The dual-mass flywheel should also help if low-end torque suffers, so less stalling in traffic. JR: Did wonders in the 911 and 718s.

Mazda6 diesel is coming, too, Mazda promises (again)

As we noted our piece earlier today about the CX-5 diesel, we've been waiting for Mazda to bring its Skyactiv-D engines to market for years. Tripped up by an emissions certification nightmare that caused delays and resulted in lackluster power and fuel economy numbers, they're late to the party. In the CX-5 diesel, it's also a questionable proposition at almost $4,000 more than the much more powerful CX-5 Turbo. But today, Mazda's U.S. president confirmed to Autoblog that the diesel engine would make its way into the 6. Like the CX-5, it'll only be offered with all-wheel drive and only on the top Signature trim level. Unlike the CX-5 diesel, which goes on sale in July, we don't know when the Skyactiv-D-powered 6 will go on sale. But it seems like later this year is a good bet. How much longer can Mazda wait, really, once the CX-5 diesel is on sale? The diesel Mazda6 will use the same 2.2-liter engine as the CX-5. It'll probably offer the same power figures – 168 horsepower at 4,000 rpm and 290 pound-feet of torque from a low 2,000 rpm, with a 5,500-rpm redline. The fuel economy bonus for choosing a diesel over the turbocharged gas engine should roughly parallel the difference in the CX-5: about 5 mpg in the city and 3 mph on the highway. That said, we don't know the 6's EPA fuel economy numbers yet. We expect the price premium to roughly parallel the CX-5 as well, so the diesel will likely be several thousand dollars more than the gas turbo engine in the same Signature trim. These are educated guesses, of course, and when we have firmer numbers or solid estimates from Mazda we'll let you know.

Mazda bringing electric car to the Tokyo Motor Show

In June this year, Mazda CEO Akira Marumoto told Automotive News Europe that "the first Mazda battery-electric vehicle will hit the market next year." Earlier this month, Mazda invited journalists to Oslo, Norway, to learn more about the automaker's EV plans and drive a prototype of the e-TPV powertrain, the letter designation standing for electric-Technology Prove-out Vehicle. Mazda had dressed the e-TPV production-intent powertrain under bodywork from the carmaker's new CX-30 compact crossover. Automotive News reports that Mazda will unveil its actual EV at the Tokyo Motor Show next month, which a Mazda spokesperson confirmed.     Mazda developed the powertrain in-house, engineered for buyers in dense urban environments. A 35.5-kWh lithium-ion battery powers a single electric motor wiith 141 horsepower and 195 pound-feet of torque. Range is said to be 200 kilometers (124 miles) on the city cycle, but that's likely on the Japanese or WLTP cycle that returns larger numbers than the U.S. EPA. The mechanical figures lie between the 28-kWh battery of the Hyundai Ioniq Electric and the 40-kWh battery of the standard Nissan Leaf. The EPA rates the less-powerful Ioniq for 124 miles of range, while the more powerful Leaf can go 150 miles. AN writes that Mazda's initial planned markets include Japan, China, and Europe where 124 miles is plenty for day trips. A version serving markets known for urban sprawl would employ a rotary engine range extender, a tech tidbit Mazda's spoken about regularly over the past year.   Iain Curry of Australian outlet Chasing Cars had good things to say about the e-TPV prototype he drove. Curry said the experimental car didn't offer strong regen braking and piped a mild four-cylinder soundtrack into the cabin to give drivers a connection to the ICE experience they're familiar with, but there's no word on whether the production vehicle will be set up the same way. Curry praised the handling, saying the e-TPV felt similar to a Mazda3 on the go and around corners. We'll get more concrete info next month in Japan. The show car in Tokyo will be a "brand-new model" on a new EV-specific platform, and don't be surprised by a compact crossover shape since the carmaker CEO said, "Our global crossover mix is currently about 60 percent."