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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:

2018 Mazda6 gets more power, efficiency to go with updated looks

The 2018 Mazda Mazda6 will debut at the L.A. Auto Show later this month, and the company released teaser images of the exterior and interior Wednesday – both of which tell us a lot about the new car. Mazda also said the sedan will have more efficient and more powerful engines. Starting with the visuals, the car doesn't look extraordinarily different from the current model, but there are notable changes. Up front, the Mazda6 now has a deeper-set grille with a 3D mesh instead of slats. The chrome strip that wraps around the lower part of the grille extends across the width of the headlights, too. Both of these cues are pulled from the Mazda CX-5. From what we can tell in the image, it looks like most of the sheetmetal along the sides and top are roughly the same as the current model. The interior also isn't a major departure from the current car, but the changes do make it cleaner and more elegant. All of the air vents sit along one slender plane that stretches across the interior. It leaves the top of the dash uncluttered and makes the vents look like a more integrated part of the design. Below the vent strip is another line of what appears to be vinyl or leather trim, and below that are the climate controls. The updated looks are accompanied by significant mechanical upgrades. While the current model offers just one engine, a naturally aspirated 2.5-liter four-cylinder, the new car will have two options. The first is again a naturally aspirated 2.5-liter engine, but it now has cylinder deactivation, allowing it to run on just two cylinders at times. For those who prefer power to efficiency, the Mazda6 will also be available with the turbocharged 2.5-liter four-cylinder from the CX-9 crossover. In that application, it makes 250 horsepower and 310 pound-feet of torque. The full reveal of the car happens on November 29 at the L.A. Auto Show. Be sure to check back then for more photos of and details about the car. Related Video: Image Credit: Mazda LA Auto Show Mazda Sedan

Mazda CX-5 diesels get discounts up to $10,000 off MSRP

When Mazda positioned its long-awaited and oft-delayed CX-5 diesel crossover as the “premium” option in the CX-5 trim structure, we were skeptical. After driving one last fall with a $42,045 sticker price, our eyebrows furrowed even deeper. Today, to nobodyÂ’s surprise, Mazda dealers are slapping massive discounts on the Skyactiv-D. CarsDirect initially reported on the discounts, pointing out that some dealers are slashing prices by $10,000. We took a spin through Autotrader to see what was out there, and the results were shocking. There were pages of CX-5 diesels with prices in the low-to-mid $30,000 range. We asked Mazda what kind of incentives it was currently offering on the 2019 CX-5 diesel. Since December, Mazda has offered a $5,000 cash rebate, alongside a 2.9 percent APR for 60 months. However, the other several thousand dollars worth of discounts weÂ’re seeing listed — as much as $5,000 more — are not being accounted for by Mazda.  Just as CarsDirect found, the largest discounts we could find on the web are for a cool $10,000, bringing the price down to $32,045. At that price, youÂ’re looking at a 23.8 percent discount. ThatÂ’s a discount of nearly a quarter(!) of the carÂ’s original asking price. We thought the Skyactiv-D was overpriced originally, but at this price, weÂ’d strongly consider it as the CX-5 to buy. Since the diesel is only offered in the top-of-the-line Signature trim, it has every gizmo and gadget Mazda offers in addition to the most premium interior materials. ItÂ’s also offered in all-wheel drive only, leaving every box with a checkmark in it.  Compared to the gas-engined CX-5 Signature that starts at $38,100 for the 2020 model year, these diesels are a steal. In fact, this price hierarchy makes a lot more sense than the way Mazda had it organized in the first place. The more powerful 2.5-liter turbocharged four-cylinder in the gas-engined Signature can easily be marketed as the most “premium” option in the CX-5 lineup since itÂ’s the fastest and most enjoyable to drive. Moving the slower diesel with the same equipment below it on the food chain sounds like the right move to us. At around $33,000-$35,000, the diesel isnÂ’t such a bad buy anymore. Fuel economy still isnÂ’t where weÂ’d like it to be, but as we opined in our First Drive review, itÂ’s still a wonderfully pleasant car to drive. Related Video: