2006 Mazda Mx-5 Miata Sport Convertible 2-door 2.0l Sport on 2040-cars

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Mazda Skyactiv-D racer first diesel to run at Indy in 60 years

While it may not be touting the old "Win on Sunday, sell on Monday" axiom we all know and love, Mazda recognizes that racing can only improve its cars. And so it's no surprise that the Japanese automaker is testing and refining its Skyactiv-D diesel engine by sending it out on various race tracks around the country - notably being the first diesel ever to compete at Daytona and the first to notch a Grand Am win at Road Atlanta.
Next up? Indy. It has been over 60 years since a diesel-powered machine ran at the Indianapolis Motor Speedway, and the Cummins-powered racer that competed in the 1952 Indy 500 with a 6.6-liter inline-six-cylinder oil-burner was a fast and brutal machine that set a new lap record in qualifying leading up to the race. Though that car was withdrawn with turbocharger failure 71 laps in, its diesel powerplant left an indelible impression on the racing community, and that's something Mazda hopes to accomplish once again.
Mazda says that the diesel engine in its race car is pretty darn close to stock - 51 percent stock by parts count, and 63 percent stock by weight - which means the way it performs in competition is at least a somewhat meaningful way to the stock engine's durability in the real world. Check out the image of the Mazda6 Skyactiv-D racer posing alongside the 1952 Cummins above (click to enlarge) and feel free to peruse the press release below for the rest of the details.

Mazda could electrify the next Miata, is trying to figure out how

The next Mazda Miata is at the embryonic stage of development. The men and women in charge of the project are debating whether to electrify the roadster, or if it's better to keep it true to its roots. The Miata is not a high-volume model in any market, so it doesn't need a plug to help Mazda comply with looming emissions regulations. The company explained it's not a matter of compliance; it's about how the definition of a sports car and the expectations of motorists could change in the 2020s. "The preferences of people who enjoy driving sports cars might be changing, so we need to think about what direction society is going in. We want to look at the best powertrain to keep the vehicle lightweight, but because of the diversifying requirements and preferences, we need to explore various options," Ikuo Maeda, Mazda's global design director, in an interview with Autocar. Adding any degree of electrification to the Miata beyond a relatively basic mild-hybrid system is easier said than done. An unusually low weight and a compact footprint defined the original model introduced in 1989, and these attributes continue to characterize the fourth-generation car (pictured) sold in 2019. Electrification requires batteries, batteries add weight and require space, and Mazda doesn't want to end up with a 3,000-pound Miata, or one that's the size of a Mercedes-Benz S-Class Convertible. Keeping its chassis balanced is a delicate task, too. Overcoming this challenge is not impossible, however, and batteries are expected to become lighter and smaller during the 2020s. The next-generation Miata isn't expected out until the middle of the 2020s, so Mazda has time to figure out whether it should go hybrid, arrive as an electric car, or carry on with a rev-happy, naturally-aspirated four-cylinder engine. Maeda stressed a final decision on the matter hasn't been made yet. "I don't have the answer right now, but we need to make a vehicle that people can own without worrying that they are not being eco-friendly," he concluded.

Takata airbag recall spreads to China with 42k Mazda sedans

The scope of the problem with the faulty airbag inflators from Takata continues to broaden and is now reaching China, as well. Mazda is recalling 42,732 Mazda6 units there, produced by its local joint venture partner China FAW Car Company, to replace the front passenger airbags. It comes as part of Mazda's recall of nearly 160,000 vehicles worldwide, including about 34,600 in the US, according to Reuters.
This is the same problem that caused seven automakers in the US to recall an estimated 2.1 million vehicles in late June. The airbag inflators can potentially explode instead of deploying the airbag, which hampers the bag's inflation. In some cases occupants are also hit by the metal shrapnel, which can cause further injuries. In the US, Mazda is repairing the 2003-2007 Mazda6 (pictured above), 2006-2007 Mazdaspeed6, 2004 MPV and 2004-2008 RX-8 originally sold in or currently registered in Florida, Puerto Rico, and Hawaii.
This is hardly the first instance of this issue. Since 2001, there have been 20 recalls tied to the exploding airbags supplied by Takata. The problem is possibly linked to the propellant in the inflators, but there's no conclusive evidence of that yet. Most of the automakers in the US limited the most recent recalls only to a few humid states because moisture potentially exacerbated the problem.