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Mazda's next-gen SkyActiv engines will drop spark plugs in favor of high compression

Homogeneous charge compression ignition, or HCCI, is the black art of internal combustion engines that aims to produce diesel-like fuel efficiency for the cost of gasoline. Although some of its competitors have developed and subsequently given up on the tech, Mazda confirmed that the next-generation of SkyActiv engines will employ HCCI technology, improving fuel economy by 30 percent and at the same time reducing exhaust emissions. According to Nikkei, a new SkyActiv family of engines is set to debut under the hood of the next-gen Mazda3 sometime in 2018 before making its way into other vehicles. In simple terms, an engine that uses HCCI burns the air/fuel mix using pressure instead of with spark plugs, just like a diesel. At 14:1, Mazda's gasoline engines already have some of the highest compression ratios out there, but a move to HCCI means cranking up the compression to 18:1. While the tech sounds relatively straightforward, using HCCI means dealing with a number of side issues. It's one of those "on paper" ideas that compounds problems when put into practice. Heat, revs, and fuel must all be carefully managed as gasoline doesn't burn the same way as diesel. Mazda is mum on details, but the automaker seems confident that the issues have been sorted. If the new engines do indeed make it to market with HCCI, Mazda will have out-engineered GM, Daimler, and Hyundai, all of which have tried and failed to develop HCCI engines in a cost-effective package. With the market moving towards electrification, it's interesting to see Mazda still focusing so heavily on traditional internal combustion gasoline engines. It's an indication of where they see the market heading for the next few years. Although the automaker has been hesitant to move forward with hybrid and electric powertrains, Nikkei also reports that Mazda will begin mass production of EVs in 2019. Related Video:

Mazda Miata RF gets price bump for 2019

Over the past couple of months, Mazda has been releasing information about updates for the 2019 model year of the MX-5 Miata. We got details about the car's 2.0-liter I4 making 181 horsepower and 151 pound-feet of torque. The car also gets a telescoping steering wheel, new door stops, updated cupholders and seat levers, standard rear-view camera and 17-inch wheels. Later, we learned the new Miata would also be a smidge more efficient. Now, Mazda has announced pricing for the 2019 Miata RF. Going on sale in August, the 2019 Miata MX-5 RF starts at $33,240 (including $895 in destination fees) for the Club trim level with a six-speed manual transmission. That's a price increase of $435. That doesn't seem so bad when you consider the extra 26 horsepower and higher redline. The Club 6MT can also be optioned with Brembo brakes and BBS wheels for an extra $3,770, or the Brembo/BBS/Recaro package for $4,670. The MX-5 Club with six-speed automatic comes with paddle shifters and sport mode for $33,840, but isn't available with the Brembo/BBS packages. The i-ActiveSense package, which includes features like Smart City Brake Support and lane-departure warning is a $450 option for the Club 6AT. MSRP for the Grand Touring trim starts at $34,230 with a six-speed manual transmission, which is $585 more than the outgoing model. The new GT-S package for the Grand Touring 6MT adds $750, and comes with a front shock tower brace, limited-slip rear differential, Bilstein dampers and a hand-painted black roof. The Grand Touring with six-speed automatic goes for $35,305. Auburn Nappa leather adds another $300. In terms of exterior colors, there are three premium options to choose from, each with its own added price. The gorgeous Soul Red Crystal tacks on another $595 to the price of the Miata RF. Machine Gray Metallic adds $300, while Snowflake White Pearl Mica costs $200. Pricing for the soft-top version of the 2019 Miata hasn't been announced yet. Related Video:

Mazda officially hints MX-30 could get a rotary range-extender

Mazda recently penned a paean to itself celebrating 100 years in business. This, naturally, meant the document also served as a love letter to the rotary engine, since, "The joy of driving, lightweight design and the rotary engine [are] three elements that define Mazda’s DNA." One of those elements has been AWOL for eight years, since the end of RX-8 production. After years of rumor feverish enough to impress Slenderman, two years ago Mazda announced it was prepping a rotary range-extender engine for a model to debut in 2020. Here we are in the anticipated year, and we still don't know anything else about that vehicle — or perhaps we do. When Mazda debuted the MX-30 battery-electric crossover in Tokyo last year, it bore an e-SkyActive powertrain with a 35.5-kWh battery sending current to an e-motor on the front axle producing 141 horsepower and 195 pound-feet of torque. With a range of around 130 miles on the European cycle, even though the crossover was meant for markets like Europe and Japan, almost everyone chimed, "This would be perfect for that range-extender engine." The automaker has hinted at that very thing for its centenary celebration. In a paragraph touching on alt-fuel RX-7 variants, the Mazda press department wrote, "Later, the company developed a prototype Mazda2 EV with a small single-rotor engine used as a range extender. A similar system could find its way onto the Mazda MX-30, a brand new battery electric crossover SUV arriving at dealerships this year." The word "could" didn't make the leap from the printed page into the video translation of the presser, a Mazda video on "The Dream Engine" ending with footage of the MX-30 rolling under the caption, "Mazda MX-30 with rotary range extender." When asked, Mazda's head of R&D in Europe explained the battery size and resultant range with wheel-to-well considerations that factored energy input and emissions output from making the battery to exchanging the battery after 100,000 miles of driving. Since the carmaker doesn't deem the pure-electric MX-30 suited to the U.S., the question bubbling beneath the latest news is whether this revised model with more range could make it here. Given a suitably sized fuel tank that could power the little people mover beyond 150 miles on U.S. roads, and a fair price, we suspect there'd be a great deal of interest. Now, Mazda, about that rotary-powered RX-7 ... Related Video: