1990 Mazda Rx-7 Convertible Convertible 2-door 1.3l on 2040-cars

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Next Mazdaspeed3 could go naturally aspirated?

The new Mazda3 is a stunner, both aesthetically and from a driving perspective. As with all good things, though, there's always room for improvement. That's where the wizards from Mazdaspeed come in. Mazda's in-house tuner has been tweaking and turbocharging the five-door Mazda3 since 2007, with impressive results.
We've shown you renderings of what the third-generation Mazdaspeed3 could look like, and for the most part your response was quite positive. Now, AutoExpress has come out with details of just what might be under that long hood. According to our friends across the pond, the new Mazda3 MPS (that's what the Speed3 is called in Her Majesty's auto industry) will be arriving with a new, high-revving, naturally aspirated engine. Wait, what?
Yes, if the rumors are to be believed, the next Mazdaspeed3 will ditch its turbocharger. According to an anonymous engineer, the new MS3 will arrive in December (this is for the UK market, mind you) with a 200-horsepower, naturally aspirated engine. The 2.0-liter mill is based on the Skyactiv engine in the new 3, and should be capable of a sub-seven-second run to 62 miles per hour.

The redesigned 2019 Mazda3 moves way upscale

Mazda didn't lie — the 2019 Mazda3 is a gently reworked production version of the Kai concept shown at last year's Tokyo Auto Show. In hatchback and sedan forms, you'll still quickly peg this a Mazda3. The dimensions barely change: The wheelbase grows by an inch, but the hatchback width and length carry over, while height decreases by an inch; the sedan is the same width but 3.2 inches longer and 0.7 inches lower. Nevertheless, the look and details have evolved throughout, yielding a much more potent and piercing hatchback, and a more sophisticated, accomplished sedan. Instead of using hard shoulder and swage lines to "draw" contour onto a flat profile, Mazda designed a car with contours that create real shoulders and hips. Shedding the illusion of surface depth for reality redefines the look and presence of the Mazda3. The new model erases the hash of lines and embossed panels in back of the current car so that the S-curved hatch has only its shutline for framing. After that, the highlights enhance the theme. On either side of the larger grille, single-lens headlamps get new accents; instead of a just plain silver bar, streaks of amber turn signals decorate the more dimensional units. The contoured taillamp housing holds highly structured, highly embellished twin circles that probably look even more sinister at night. On the sedan, those naughty taillights are surrounded by a refined rear valance with a more angled, muscular lip along the trailing edge. It's the same inside, a design based on results of Mazda's in-depth studies of human mechanics. The flatter instrument panel stresses clean lines along the horizontal. Trimmer steering wheel spokes with silver buttons line up with the central span across the dash housing the climate control buttons and vents. The new shift panel sits higher and more forward, making it easier for the driver to move a hand from the steering wheel to the lever. To raise perceived luxury, the center tunnel trim is a clear layer laid over a laser-engraved black layer, said to produce a "look of deep transparency," and similar to the effect found on the new BMW X5 and X7. The cupholders are now in front of the shifters, and the armrest is longer. There's no mention of that digital gauge cluster that leaked earlier this year, though. Buyers who opt for fabric will get a new "Greige" hue, a mix of gray and beige. Mazda designed a new leather grain with creases of varying depths and shapes depending on where it's placed.

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.