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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:

2019 Mazda3 Hatchback AWD Premium Second Drive | Gushing about an exceptional car

The 2019 Mazda3 Hatchback is quite simply one of the best cars I've ever driven. During my week with one, specifically a range-topping Premium package version for $31,335, I struggled to come up with bad things to say apart from elements like rear visibility and back seat headroom that are directly related to its distinctive, avant garde design. That's an acceptable tradeoff in my book. So many of the new 3's elements can serve as a measuring stick for other cars. Not just its specific compact hatchback/sedan class, but all other cars, period. I had the Mercedes CLS 450 at the exact time, a car I deeply appreciate and that cost $69,000 more, and yet it was a struggle to decide which I wanted to drive. Perhaps not surprising given the 3's history, but the measuring stick is set first by the handling. It dances between corners with composure and feedback that you just don't get in cars any more Í– let alone at this price point. This is a car you feel through your butt, your heels on the floor and your hands on the wheel. Everything is just so right. And it should be noted that I came to this conclusion before remembering that Mazda switched to a cheaper, less sophisticated torsion beam rear suspension for this latest model. Perhaps you can tell the difference driving 10/10ths at a test track, but in the real world, I certainly didn't notice or log a complaint. Grip is superb. Even when the tires gave way a bit on my mountain road evaluation route, there was only a bit of squealing and it resolutely whipped itself through hairpins with shockingly little understeer for a front-drive-based car, helped no doubt by its all-wheel drive system. It would be interesting to see how much understeer the front-drive versions allow, and whether AWD is mitigating torque steer given the 3's not-insignificant power. As it is, the 3's standard 2.5-liter four-cylinder produces 186 horsepower and 186 pound-feet of torque, which is substantially better than virtually every other base engine in the segment. Its throttle response should be copied by everyone, as should the steering. OK, maybe not Porsche, which I keep finding myself drawing comparisons to whenever experiencing a new Mazda. Take that as the compliment it seems to be. I'd also like to note that the 3 has a six-speed automatic transmission rather than an easily confused eight-, nine- or eleventy-speed unit. Or a damn CVT.

2020 Mazda CX-30 First Drive | The middle way

JULIAN, Calif. — An Aveo wanders in the lane ahead, its gas flap open and waving in the 30-mph slipstream as it creeps along some of the best roads in all of Southern California as swiftly as a retreating glacier. The 2020 Mazda CX-30Â’s speedometer needle quivers and then falls. The longing for a passing zone becomes unbearable. Even with a merely adequate 186 horsepower and a standard automatic, I canÂ’t wait to smoke this Aveo as I arc into another corner, tap brakes to transfer weight, and scoot into the next. And then a sort of calm washes over, provoking the slightest smile. The smile is a realization that, short of a few performance models from the German brands, most compact crossovers donÂ’t beg for this sort of action. The CX-30 is not most crossovers – itÂ’s built on the bones of the dynamically overachieving Mazda3, making it legitimately rewarding to drive. Think of it more as a car that happens to be marketed as a crossover. The careful attention to vehicle dynamics means it doesnÂ’t wallow like you might expect a jacked-up 3 might. What it feels like is a 3 variant, not an entirely different vehicle — analogous to the Subaru CrosstrekÂ’s relationship to the Impreza, albeit with greater visual differentiation and a much more sophisticated driving experience. ThatÂ’s a very, very good thing indeed – and letÂ’s take a moment to review the virtues of the 3 to explain why. ThereÂ’s nothing in its class that nails its brief so well. The interior looks exceptionally premium in higher trim grades, it drives better than anything in its class, and the sheetmetal “oozes sex appeal,” as contributing writer Jason Cammisa put it – although less oozing is present in the awkward hatchback. ItÂ’s even available with all-wheel drive. However, I respectfully disagree that the engine is refined – the Skyactiv-G 2.5-liter inline-four, a carryover from the last generation and shared between the 3 and CX-30, is harsh and clattery. In both vehicles it gets the job done. That 186 hp is backed up with 186 pound-feet of torque, channeled exclusively through a six-speed automatic in the CX-30. Front- or all-wheel drive is available in every CX-30 trim. And while thereÂ’s roughly a 200-lb weight penalty over the 3, the CX-30 manages to feel perky, not porky. Nor is the fuel economy hit as much as you might imagine.