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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.

Mazda files patents for a sequential twin-turbo setup

Mazda has a history of interesting engine technologies, from yesterday's rotary engine to tomorrow's compression ignition engine, and new patents show it still may have some internal combustion tricks up its sleeve. The one on display in these patents isn't especially new in concept, though. A sequential twin-turbocharger setup is something Mazda itself used on the third-generation RX-7. But it's something we haven't seen much of lately. It looks like it could have some possible advantages over older sequential systems, and it has some potential advantages for enthusiasts. First a quick and dirty primer for what makes a sequential twin-turbo system distinct from other twin-turbo systems. In many twin-turbo engines, there are simply two turbos that work together as one bigger turbo. They're the same size, and they spool up at the same time. With a sequential setup, at low rpm, a smaller turbocharger is spooled up first at low-rpm for quicker throttle response, and as the rpm and exhaust pressure increases, a valve opens up that allows a larger turbocharger to also spool up and provide high-rpm boost. That's basically how the Mazda design shown above functions. A big flap blocks off the larger turbocharger exhaust inlet, channeling all the exhaust to the smaller turbo. When more exhaust is available at high rpm, it looks like that flap opens up to spool up the big turbo, too. What's interesting here is that the way the turbochargers are packaged takes up less space than past systems. It looks like both turbos are contained in one unit that shares the same exhaust outlet, meaning the exhaust manifold could be kept simple and compact. In fact, the piping for compressed intake air could also be shared, reducing the amount of piping, which would further decrease the amount of materials and possible failure points. There are a number advantages of making this system smaller. The potential applications of the system are much greater, since it could fit in smaller cars with smaller engine bays. Making the system smaller also means that there won't be as much weight, which is important from both fuel economy and performance standpoints. Finally, the smaller setup likely uses fewer materials, which could make the system cheaper and thus easier to offer on a wider range of vehicles, or at least more profitable for Mazda.

2016 Mazda MX-5 Miata gets 25 percent fuel economy boost

Just days after revealing full pricing and specs for each trim level of the 2016 MX-5 Miata, Mazda is spilling the beans on the roadster's fuel economy. As it turns out, the numbers show an impressive boost over the previous generation. All 2016 Miatas in the US are equipped with a 2.0-liter four-cylinder that makes 155 horsepower and 148 pound-feet of torque. With a six-speed manual, the EPA estimates fuel economy of 27 miles per gallon city, 34 mpg highway and 30 mpg combined. Buyers choosing the six-speed automatic, which is a $1,075 option (that you should absolutely not choose), are expected to get 27 mpg city, 36 mpg highway and 30 mpg combined. Compared to the previous-gen model with a six-speed manual, these latest numbers represent a 25-percent improvement in mileage. The boost in economy for the Miata likely comes from a variety of sources. Underneath the hood is one of Mazda's latest Skyactiv engines, and the loss of around 150 pounds from the last gen helps too. Production of the latest version of the famous roadster is already underway, and they should start arriving at dealers in the late summer. 2016 MAZDA MX-5 MIATA FUEL ECONOMY IMPROVES DRAMATIC 25 PERCENT VERSUS OUTGOING MODEL 24/04/15 - Mazda's Flagship Roadster Highlights Improvements Displayed by SKYACTIV Technology - IRVINE, Calif., April 24, 2015 -- Lighter, quicker and more nimble than its predecessor, the 2016 Mazda MX-5 Miata demonstrates the power innovation can have when re-engineering a roadster from the ground up. In addition to all of the aforementioned improvements the 2016 MX-5 has, fuel economy can now be added to the list, with MX-5 achieving an EPA-estimated 27 mpg city/34 mpg highway/30 mpg combined when equipped with the standard SKYACTIV-MT six-speed manual transmission (EPA-estimated 27 mpg city/36 mpg highway/30 mpg combined when equipped with the six-speed automatic). This performance represents a 25-percent increase in fuel economy versus the 2015 MX-5's EPA-estimated fuel economy when paired with the outgoing model's available six-speed manual transmission, highlighting the benefits of SKYACTIV Technology. "SKYACTIV Technology is more than a catchphrase for Mazda; it's a total effort to increase efficiency, improve performance, safety and technology and instill each Mazda vehicle with a directness and responsiveness that's unmatched in the segments in which our vehicles compete," said Jim O'Sullivan, president and CEO, Mazda North American Operations.