1985 Mazda Rx-7 Gs on 2040-cars

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Mazda6 Skyactiv-D Racecar ready to bring diesel to Grand-Am

It may not be quite as radical as some of the company's past rotary racers, but the new Mazda6 Skyactiv-D racecar does have a notable powertrain underhood: the automaker's brand-new clean diesel four-cylinder engine.
Three of these new diesel-powered Mazda6 racers will take to the track in the Grand-Am GX class of the upcoming 2013 Rolex 24 at Daytona on January 26, with five drivers on each team. The car you see above, number 70, is sponsored by Mazda's longtime motorsports partner, SpeedSource.
Check out our full gallery of high-res images live from the 2013 Detroit Auto Show above and feel free to read through the related press release from Mazda below.

Mazda ranks first for reliability in Consumer Reports, dethroning Toyota, Lexus

For time immemorial, or at least the past six years, Toyota and Lexus have sat at the top of Consumer Reports' annual survey of vehicle reliability. It was almost as much a given as blue skies and taxes. Not any more. Mazda has dethroned them both, ascending to the No. 1 spot for the first time. Mazda nabbed the top spot with powertrains and that used durable (and more fun) six-speed automatic transmissions instead of CVTs, which tend to be more fragile. Mazda also didn't rely on overly fancy infotainment systems, instead bucking industry trends with cockpits that discourage screen use during driving and encourage buttons and dials that can be handled without taking your eyes off the road. The most reliable Mazda was the MX-5 with a score of 98 out of 100, followed by the CX-30, CX-3, and CX-5, all scoring 85 or better. Overall, Toyota and Lexus still rank far above the average, taking the second and third spots respectively. Lexus was dragged down by problems pertaining to the LS, but CR didn't specify the nature of those issues. Buick was the most improved brand, jumping up 14 spots to claim fourth. Its show was attributed largely to the Encore, which received a score of 91. Honda moved up seven positions to round out the top five, but was denied a better position due to the Passport and Odyssey's scores in the mid-30s. Among European brands, Porsche ranked highest, at No. 9. BMW moved up five spots to 12th, while Audi kept its mid-pack position at 14th, and Mercedes brought up the rear among the German big three in 20th place. At the bottom of the list were Ford, Mini, Volkswagen, Tesla, and Lincoln falling 11 places to dead last. In particular, the Ford Explorer was called out for having the fewest points of any model, barely registering at all a score of 1, thanks to gremlins with engines, body, power equipment, electronics, and transmissions. Tesla's newly introduced Model Y crossover dragged down the electric carmaker's standing to the penultimate spot. Owners of the Model Y, which began production in January, have reported misaligned body panels that had to be fixed and mismatched paint including, in one case, human hair stuck in the paint, according to Consumer Reports. The Model Y finished with a "much worse than average" reliability rating. The rankings are taken annually based on a survey of 300,000 vehicles. Information from AP was used in this report.

This is what a 1,200-hp twin-turbo 4-rotor looks like in a Miata

We've seen the diminutive Mazda MX-5 Miata swallow plenty of big engines, but New Zealand drifting ace "Mad Mike" Whiddett is roaring into where-no-man-has-gone-before territory. Wanting to replace his 515-horsepower "MADBUL" RX-7 and its twin-turbocharged, three-rotor 20B engine, his new ride is an NC-series Miata with four rotors and twin Garrett turbochargers courtesy of Pulse Performance Race Engineering. It is called "RADBUL," and expected power at standard boost is 1,200 hp, but the builders at Pulse Performance think it will get up to 1,500 hp at full boost. And yes, that exhaust exits through the hood. Four-rotor engines are actually popular - builds are detailed on forums like this one from 2007 and this one from 2008, this UK company or this Canadian company will sell you one complete - but they're usually being prepped for an RX-7. Mad Mike's choice of a Miata for this enterprise makes this about as extreme as you can get, short of throwing it into a Mazda R360. You can watch Mad Mike tell the story of the build in the video, and check out the first and second installments about the build on the Red Bull site.