2021 Mazda Mx-5 Miata Grand Touring on 2040-cars

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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:

The Miata is always the answer, but which one is the answer for you?

If you follow along with our long-term vehicles, you know that we had a 2016 Miata Club in the fleet. It's a Miata that had every sporty bit available installed, but there are other ways to spec out an MX-5. Just recently, we had the chance to sample the other end of the MX-5 spectrum, the Miata RF Grand Touring. While they're cut from the same sheetmetal, they're surprisingly different cars. So we thought we'd put together a little guide to help you figure out what bodystyle and trim level of Miata is right for you. How do you like the wind in your hair? If you're someone who loves soaking up the sun and having the wind blow through your hair, or lack thereof, there's no replacement for the soft-top Miata. The manual folding mechanism will get you out into the fresh air faster than virtually any other convertible, and it will go back up just as easily when the rain comes. Raising and lowering it is quick and easy, and can be done with one hand from the driver's seat. And with the top down, you'll be greeted by breeze from virtually every direction, and an airy, unencumbered feeling that only comes with a full convertible. However, if you prefer to keep your hair in place and just get some sun, the RF is the better choice. The retractable targa top still descends and reemerges quickly, taking just 13 seconds either way. Keeping the windows up with the targa stowed will allow in plenty of sun, but will keep wind to a minimum. But when the windows drop, you'll still get a healthy dose of airflow. It still doesn't feel as open as the soft top, though, since you'll be able to catch the fastback pillar out of the corner of your eye. But if you value protection over airflow, that won't be an issue. View 11 Photos Does your Miata need to be a daily driver and occasional road tripper? While many Miatas will be weekend toys, one of the appealing things about them is that they're reliable enough and have just enough cargo space that they can serve as an everyday vehicle. For people who want to use a Miata as a daily commuter, and even take it on road trips, we would recommend an RF with the Grand Touring trim, as seen above. Although it still isn't a quiet car in the grand scheme of things, the RF's solid top makes it more livable for highway stints both short and long. The Grand Touring trim comes recommended for these purposes for a couple of reasons. Foremost is the more forgiving suspension shared between it and the base-level Sport.

2020 Mazda MX-5 Miata RF Automatic Road Test | Cue the sad trombone

Somewhere in Hiroshima, a parade of nearly finished Miatas glides along a track waiting to receive their beating hearts, the powertrains that'll let them ply their road-carving talents the world over. One – let's call him Fred – is eager to begin his new life as a 2020 Mazda MX-5 Miata, bringing joy to his future owner and just generally being awesome, even if the RF power targa-ish roof that's already been applied to him is a tad dweeby. Visions of hairpins and power slides and expertly executed heal-toe downshifts dance in his head Â… and then it happens. He is given the one thing every new Miata dreads: an automatic transmission. Poor guy. This will not, entirely at least, be yet another diatribe in the ongoing Quixotic campaign to Save the Manuals(!). Automatic transmissions can be quite good and even beneficial in sports cars, especially on the track where removing the need to operate a clutch and expertly execute those heel-toe downshifts lets you better focus on the steering, what the chassis is doing and just going faster. That the computers can shift quicker than you can is another obvious advantage. The trouble with the Miata, and why Fred is now shuffling off the line like George Michael away from the Banana Stand, is that the Mazda six-speed automatic just isn't appropriate for a sports car. The automatics in the rest of Mazda's fleet are actually quite excellent, delivering superior response than rival transmissions, and delivering comparable fuel economy despite possessing fewer gears. However, what works well in a compact crossover like the CX-5 or CX-30 is not necessarily appropriate for a sports car like a Miata. Unlike the dual-clutch transmissions or even some sport-tuned conventional automatics of various performance-oriented cars, this one doesn't downshift adroitly when braking into a corner, anticipating your imminent need to get back on the power. The plastic paddle shifters lack the reassuring, mechanical feel of the best examples, and then don't produce quick-enough reactions from the transmission when up- or downshifting. I found using the shifter itself, which is at least oriented the correct way – with downshift forward and upshift rearward – to ultimately be more rewarding as it has a more involving action to it. Still, it's nothing compared to the solid, snick-snick action of the six-speed manual.