1980 Mazda Rx-7 S Coupe 2-door 1.1l 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 Though that car was withdrawn with turbocharger failure 71 laps in, its diesel powerplant left an indelible impression on the racing community, and that's something Mazda hopes to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.

Toyota, Honda, Nissan and more collaborating to increase fuel efficiency

Toyota, Honda, Mazda, Nissan, Subaru, Mitsubishi, Suzuki and Daihatsu have announced an alliance that will see a push to improve fuel economy from both gas-powered and diesel-powered engines by as much as 30 percent before the end of the decade.
The newly assembled Research Association of Automotive Internal Combustion Engines put the roughly $20-million project together, with the Japanese government committing to half the cost while the eight manufacturers will chip in the rest.
According to Automotive News, the automakers will team up and share basic research on internal-combustion engines in a bid to cut costs. Eventually, the results of the research will find its way into a production vehicle, although it's unclear just when we'll see the fruits of this partnership on the road.

Mazda RX-7 could return in 2020

We like writing about the next Mazda RX-7 because it's like writing about the Chupacabra, Slenderman, or the Florida Skunkape, all of which are imaginary creatures seen by someone who knew someone who had an uncle whose dead great-grandfather's sister took a picture of it, invariably at night, while she was drunk, with her 1933 Kodak Brownie. Autocar is the latest with an RX-7 revival, saying it could come as soon as 2020 to celebrate Mazda's 100th anniversary. Before we get to that, let's take a brief look at RX-7 rumors. In 2009 there was speculation we'd get a concept RX-7 at the Tokyo Motor Show. That same year it was predicted the RX-8 would die to make room for a new RX-7 in 2012. In 2010 Mazda was developing a 300-horsepower rotary for the RX-7 that could run on gasoline or diesel and had better fuel economy and less oil consumption. Then Autocar said we could get the new RX-7 by 2013, a rumor that turned into a new RX-9 based on the Mazda MX-5 Miata platform. In 2012 the potential arrival date had become 2017. In 2013 the company CEO Masamichi Kogai said the equivalent of "Not gonna happen," and he said it again last year, just 90 days ago. It should be clear by now that this car is Mazda's version of the Lotus Esprit. Whew. Now that we're clear on all that, what does Autocar say? That a follow-up to the extinct RX-8 is coming that will sit on the new MX-5 Miata platform, and Mazda's vice president of European R&D said there are still 30 engineers working on rotary engines in partnership with universities. The successor will be front-engined and rear-wheel drive, have either two seats or 2+2 seating, and could be called RX-6, RX-7, or RX-9. That sounds like three distinct statements, only one of which is definitely true, that could possibly just maybe add up to a new RX-7, but could even more likely add up to a rotary-engined concept car that never sees production. We've only got five more years to wait, and since we've been begging at the RX-7 doors this long... Related Video: News Source: Autocar Rumormill Mazda Coupe Performance rotary rotary engine mazda rx-7