1992 Mazda Mx-5 Miata Mx-5 on 2040-cars

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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.

Mazda announces Takata expansion in US to 472k vehicles [UPDATE]

Update: Mazda is revising the total number of vehicles affected by its Takata airbag inflator recall downward to 464,684 units, compared to the original NHTSA documents showing 472,056. According to Mazda Public Affairs Manager Tamara Mlynarczyk to Autoblog, "It is my understanding that Mazda Japan will be submitting a revised Part 573 on Monday that reflects our numbers." The company's official statement on the recall is now included below. Mazda is the latest automaker in the US to officially announce the details of its expanded Takata airbag inflator recall. The company is broadening its campaign to cover a total of 472,056 vehicles. Mazda's airbag inflator recall covers now the front driver's side for the 2003-2008 Mazda6 produced between May 29, 2002, and May 5, 2008, the 2004-2008 Mazda RX-8 from between April 10, 2003, and February 18, 2008, and the 2006-2007 Mazdaspeed6 made between August 4, 2005, and June 29, 2007. Among these three models there are 444,907 units affected. This is an expansion from of the previous total of about 330,000 examples from 2004-2008. The passenger-side airbag of the 2004-2006 B-Series pickup is also being recalled for those with build dates between April 17, 2003, and May 2, 2006. There are 27,149 of these vehicles in need of replacement parts. Takata's airbag inflator recalls have affected 34 million vehicles nationwide from 11 automakers. In a recent hearing before Congress, Takata said it was producing 740,000 replacement kits a month and hoped to grow that to a million. Other suppliers have also started making the parts. Related Video: RECALL Subject : Driver's Frontal Air Bag May Rupture Report Receipt Date: JUN 04, 2015 NHTSA Campaign Number: 15V345000 Component(s): AIR BAGS Potential Number of Units Affected: 444,907 All Products Associated with this Recall Vehicle Make Model Model Year(s) MAZDA MAZDA6 2003-2008 MAZDA MAZDASPEED6 2006-2007 MAZDA RX-8 2004-2008 Details Manufacturer: Mazda North American Operations SUMMARY: Mazda North American Operations (Mazda) is recalling certain model year 2003-2008 Mazda6 vehicles manufactured May 29, 2002, to May 5, 2008, 2004-2008 RX-8 vehicles manufactured April 10, 2003, to February 18, 2008, and 2006-2007 Mazdaspeed6 vehicles manufactured August 4, 2005, to June 29, 2007.

2016 Mazda MX-5 Miata configurator fulfills your droptop dreams

The first batch of 2016 Mazda MX-5 Miatas are already at dealers, but Mazda is finally launching a configurator for its completely revised sports car. Even if pricing doesn't come as a surprise, you can still have some fun creating one to your own specific tastes. The major equipment changes on the Miata happen between the Sport, Club, and Grand Touring trims, and options are generally kept light. The real standout is the Brembo/BBS package for $3,400 that's exclusive to the Club version. It adds Gunmetal 17-inch BBS wheels, Brembo front brakes with red calipers, side sill extensions, a rear bumper skirt, and keyless entry. On the Sport and Grand Touring, $1,200 buys the Appearance Package with a front air dam, side sill extensions and rear bumper skirt. There's also keyless tech for $130 on them. Mazda also offers a few items to dress up the convertible's looks. There's a choice of a black or body color rear lip spoiler for $350, and Soul Red Metallic paint adds $300. For protection, clear film for the front and rear paint is $125, all-weather floor mats go for $90, and wheel locks cost $55. Finally, a cargo net is $50. We ticked every applicable box on the Club trim above to make its $28,600 base price leap to $33,790, after the $820 destination charge on all models. Happy building. Related Video: