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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 Though that car was withdrawn with turbocharger failure 71 laps in, its diesel powerplant left an indelible impression on the racing community, and that's something Mazda hopes to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.

Why is it called Mazda CX-30? Plus other questions answered

GENEVA — Mazda just introduced its latest crossover, the CX-30, and it left us raising an eyebrow. It's planned for a global release, including the United States, and it's supposed to slot between two compact crossovers that one might not think had room for another model. Plus it has a name that doesn't fit Mazda's typical nomenclature. So we thought we'd take a little time to explain some of those things, starting with the name. Mazda arrived at the CX-30 name because of a self-created problem: the Chinese Mazda CX-4. The CX-4 name would be perfect for the CX-30, since it would fall right between the CX-3 and CX-5 where it's positioned. But with the name taken, and evidently no plans to discontinue, replace, or rename that Chinese model, Mazda needed something else, and fractions and decimals weren't on the table. So appending a zero was the plan. Talking with a Mazda representative, there were hints, though no concrete confirmation, that this naming scheme could possibly spread throughout the Mazda line. There would be advantages to such a system, such as bringing the CX-30 into line with other Mazda products, but it would also provide room for other in-between models named CX-35, CX-25, etc. Now for the size. Mazda says it fits between the CX-3 and CX-5, both of which will be sold alongside it for the foreseeable future. But is it closer to one than the other? Length-wise, the CX-30 is 4.7 inches longer than the CX-3 and 5.9 inches shorter than the CX-5. It's also an inch wider than CX-3 and 1.8 inches narrower than CX-5. Interestingly, the CX-30 and CX-3 are the same height, which is 5.9 inches shorter than the CX-5. The CX-30 does have a bit more ground clearance than the CX-3, but only by a few hundredths of an inch. To add some context outside the Mazda brand, the CX-30's size also puts it on par with crossovers such as the Mitsubishi Eclipse Cross, Subaru Crosstrek and Jeep Compass. All of those are sort of in-betweeners themselves. By contrast, the CX-3 is one of the smallest subcompact crossovers and aligns more closely with a Hyundai Kona. In other words, there actually was a segment gap Mazda could fill as the CX-30 fall pretty squarely between the CX-3 and CX-5. As such, we also imagine that pricing will fall between the two. The CX-3 starts at $21,435 and the CX-5 at $25,395. So about $23,000 seems reasonable for the base Skyactiv 2.0-liter engine, and probably more for the Skyactiv-X engine.

Mazda G-Vectoring Control makes driving better without you knowing

Mazda has just spent eight years developing a new technology that will make its new cars a lot more fun to drive, even if you have absolutely no idea that it's working. And subtlety's the point, Mazda engineers told us at a press event at Mazda Raceway Laguna Seca. In fact, the effects of what they've dubbed G-Vectoring Control are so fine that the marketing and PR teams are at a loss for how to do their jobs with it. "The engineers have done their work," said Mazda Director of Communications Jeremy Barnes, "But how do we get the message across?" The basic premise is this: G-Vectoring activates only when the car's on-board computer reads simultaneous steering and throttle input. The data — including throttle position, steering angle, and, crucially, how quickly you're adjusting the steering angle — are then funneled through an algorithm to reduce engine torque, which transfers vehicle weight, adding more grip to the wheels that need it. The system will appear first on 2017 Mazda6 sedans arriving in showrooms later this year, followed by the 2017 Mazda3. Actually, "subtle" does not even begin to describe the effect. G-Vectoring Control can detect as much as one tenth of one degree of steering angle, and changes the cornering forces only 0.1 to 0.5 g as a result. "That's less than the human body can feel," explained Vehicle Development Engineer Dave Coleman. In practice, G-Vectoring reduces the steering angle at turn-in, as well as the rate at which one turns the wheel. To demonstrate, Director of R&D Kelvin Hiraishi rode shotgun with us in a specially equipped Mazda6 that allowed him to turn G-Vectoring on or off at the push of a button (production cars will always have it on). Hiraishi had us drive a number of courses, including Mazda Raceway Laguna Seca itself, while an engineer measured our steering inputs with a laptop Matrix'd into the car's electronic brain. I drove the same course several times with the same car in the same conditions, with cruise control locked and the system turned on or off. Lo and behold, with G-Vectoring activated, the engineer's output graph showed that my steering inputs were indeed reduced ever so slightly. There were two times that G-Vectoring was markedly noticeable. The first on a turn with a minor banking toward the outside, and the second was during cornering over an artificially wet section of the course — in other words, when the car was at the limits of adhesion.