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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:

Electric Miata smokes Tesla Model S at the track

Yes, folks, you read that headline right. A souped up battery-electric version of a Mazda Miata took down a Tesla Model S on a quarter-mile drag strip. And it wasn't even close. Road Test TV was kind enough to post a video of a forest-green Miata (and its very stoked driver) doing a quarter-mile run in a rather brisk 9.27 seconds, beating the Model S sedan by a whopping 3.5 seconds in the process. And the Mazda crossed the finish line moving at 142 miles per hour, or 40 miles per hour faster than the Tesla was going when it finished the race. It's a good thing for the Tesla owner that they weren't racing for pink slips. Granted, the comparison is probably an unfair one because the Tesla was a stock, production vehicle (the P85 Performance model, but still), whereas who knows how the Miata was juiced up and how much cash it took to do the job. It's sort of like putting, say, an automotive writer against Usain Bolt because we ate the same breakfast and share 99 percent of our DNA. Still, the video does lend a certain credence to the idea that a battery-electric, super-light, rear-wheel-drive Miata would be a lot of fun, or at least a heck of lot more fun than any other Mazda out there. We're just sayin'. Check out the 100-second video below, and remember not to blink. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

2014 Mazda6 i Sport

In an automotive landscape dominated by platform sharing, technology exchange and any number of other cross-fertilization/cost-saving/amortization exercises, it's actually pretty rare that we get to drive a new car that is as "all-new" as this, the 2014 Mazda6. With brand-spanking new Skyactiv architecture throughout - engine, transmission, body and chassis all included - this 6 represents a new era of flexible production and cutting edge running gear for the happily lithe car company.
Our own Jonathon Ramsey did a cracking job of running the Mazda6 through its First Drive paces a few months ago, and sufficiently impressed upon us just how good looking a car this is for the midsize sedan segment. Suffice it to say, now, then, that this is easily the most interesting (and quite possibly the most beautiful) midsize sedan in the segment today. However, as Mr. Ramsey reviewed a fully contented example of the 6 - one equipped with the six-speed automatic transmission - we took advantage of Mazda's North American launch event of the car to suss out the base Mazda6 i Sport, complete with its six-speed Skyactiv manual gearbox. This may not shock you, but the stripper's pretty good, too.
Driving Notes