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Mazda Skyactiv-X Review | The revolution begins with a squeeze-bang

The matte black Skyactiv-X prototype looks like a rough Mazda3, perhaps reconstructed after a bad wreck by an over-enthusiastic owner of a spot welder and lots of gaffers' tape. Ribbed ducts poke out of the dash sending two breaths of conditioned air to no one in particular. Even its revolutionary engine, the thing we're here to experience, is entombed in a massive, nondescript cover to mask its unseemly noises. It's a wild, strange way to meet a very unconventional vehicle that promises diesel-like fuel economy, a wide torque band, and an exotic method for burning less gas than ever before. It takes a few hours for Mazda's engineers to explain the fundamental principles of operation. For more detail, read our Skyactiv-X Spark Controlled Compression Ignition explainer, but here's a very brief overview. Skyactiv-X marries some traditional gasoline engine characteristics with a novel form of compression ignition called SPCCI. The key for Skyactiv-X is to use very high compression in the cylinder and an extremely lean fuel-air mixture. Squeezed right to the cusp of getting hot enough to blow up all on its own (which is very hard to predict), a squirt of extra gas and a spark interject to cross that compression-ignition threshold in a controlled and predictable manner. See the animation below: That takes a few essential components to get just right. One is a massive amount of computer processing power and some pressure sensors in the individual cylinders, because the ambient conditions change how and when these things happen. Skyactiv-X uses a clutched supercharger to pump in additional air when needed to nail the mixture precisely, and high-pressure injectors to get the low ratios of fuel to disperse properly in the chamber. And since it operates like a conventional gasoline engine sometimes, it uses valve timing to lower the very high compression ratio so it doesn't reach combustion ignition in that mode. In practice, the Skyactiv-X runs in compression ignition mode most of the time. In practical terms, that means it drives like a torquey gasoline Skyactiv engine. The torque curve is broad and flat — diesel-like in that respect. That also means it can get away with using a six-speed transmission and a lower final drive for better response. There's enough grunt and economy together that Mazda can let the engine spin faster — at 60 mph, it's running at roughly 1,000 more RPM than a similar gas engine, with greater efficiency.

2016 Mazda CX-5 keeps it simple

Take a long, hard look, folks. This is the refreshed 2016 Mazda CX-5, which makes its debut at the Los Angeles Auto Show today. And if you're thinking, "Say, that looks just like the old one," you really aren't alone. The visible updates certainly aren't major - Mazda has instead focused on giving the already-good CX-5 some thoughtful upgrades to make it a more attractive package than ever.
Outside, there are some slight changes to the styling, including new LED light signatures at the front and rear, as well as redesigned foglamp housings. Uplevel models also ride on attractive new 19-inch alloy wheels, with a dark finish.
Under the hood, it's all the same. Mazda's Skyactiv 2.0- and 2.5-liter four-cylinder engines carry over, with 155 and 184 horsepower, respectively. Front-wheel-drive, 2.5-liter models get a small bump in fuel economy, too - the CUV is now rated at 26 miles per gallon city and 33 mpg highway, up from 25/32. Models equipped with the automatic transmission now benefit from different drive modes, as well.

2022 VW GTI, Golf R and Ford's electric future | Autoblog Podcast #680

In this episode of the Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Road Test Editor Zac Palmer. They start off discussing their drives in the 2022 VW GTI and 2022 VW Golf R. They then discuss the news, which is jam-packed this week. The Mazda6 and CX-3 are going away, and Alfa is reportedly mulling a new GTV and Duetto. Plus, Ford teased an electric Bronco, confirmed a future electric Explorer and fully revealed the work truck version of the 2022 F-150 Lightning named the "Pro." They end by turning to the mailbag and responding to another listener's Spend My Money question. Autoblog Podcast #680 Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown Cars we're driving 2022 Volkswagen GTI 2022 Volkswagen Golf R News Mazda6 and Mazda CX-3 officially discontinued for 2022 Alfa Romeo's new CEO sees room to bring back the GTV and the Duetto Electric Ford Bronco could be coming, electric Explorer is confirmed F-150 Lightning Pro revealed as Ford's sub-$40K electric work truck Opinion We need to legalize adaptive driving beams already, for safety's sake Mailbag Spend My Money Feedback Email – Podcast@Autoblog.com Review the show on iTunes Autoblog is now live on your smart speakers and voice assistants with the audio Autoblog Daily Digest. Say “Hey Google, play the news from Autoblog” or "Alexa, open Autoblog" to get your favorite car website in audio form every day. A narrator will take you through the biggest stories or break down one of our comprehensive test drives. Related Video: Podcasts Alfa Romeo Ford Mazda Porsche Volkswagen Hatchback Performance