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 Though that car was withdrawn with turbocharger failure 71 laps in, its diesel powerplant left an indelible impression on the racing community, and that's something Mazda hopes to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

2019 Subaru Forester vs compact SUV rivals: How they compare on paper

We've seen what the 2019 Subaru Forester looks like (pretty much the same). We've found out how much it's going to cost (just a bit more). And also how much bigger and more powerful it'll be (appreciably on both counts). Now it's time to see how all of that compares to its top compact SUV rivals. While you can see the same engine and dimension specs for every compact SUV here, for this comparison featuring the latest 2019 Forester info, we've decided to define "top rivals" as those that the 2018 model was most frequently cross-shopped with. That means the 2018 Honda CR-V, 2018 Toyota RAV4, 2018 Mazda CX-5 and 2018 Nissan Rogue. At the time of this writing, none of their respective manufacturers had released data for 2019 models. We also included info for the 2018 Forester as well. So, without further blather, cue the Spreadsheet-o-Matic 3000. How big are they? The 2019 Forester may look nearly identical to the compact crossover it replaces, but it's nevertheless bigger and heavier. In particular, its wheelbase has increased from being the smallest in the segment to one that's pretty much average. It's a good bet that this gain is the reason rear seat legroom has also increased. Width is also up, but the Forester actually remains the narrowest compact SUV. As for other noteworthy dimensions, the new Forester now has the most maximum cargo capacity of any compact SUV with 76.1 cubic feet. Now, it should be noted, that's without the panoramic sunroof that comes on all but the base model. With it, max capacity shrinks to 70.9 cu-ft. Two points about that. First, Subaru is the only company that calls out this difference, and all the others almost certainly are not measuring with a sunroof. Second, this gives you an idea about how much of "maximum cargo capacity" includes space up high where you're probably not storing much cargo. As such, we included the Forester's biggest number and think it fairly indicates Subaru should carry the "biggest in segment" crown. How do their engines and fuel economy compare? Here's the most important takeaway here: The new Forester is tied for the best fuel economy in the segment, but that's with standard all-wheel drive. Everything else listed above is with front-wheel drive. The 2019 model also gets a welcome injection of power, resulting in the fourth-most base horsepower in the segment (or fifth, if you consider the CR-V technically holds spots 1 and 3).

Mazda6 diesel engine delayed over low performance, still coming

Oh Mazda... we had many hopes for the promised diesel four-cylinder in the Mazda6, but those have remained largely unfulfilled, as the oil-burning powerplant has failed to appear on dealer lots following its 2012 LA Auto Show announcement. Despite engineering issues that forced the company to announce that the program was delayed back in September 2013, Mazda remains adamant that the 2.2-liter Skyactiv-D is still coming to our shores. "We're still very much committed to diesel," Mazda's North American CEO, Jim O'Sullivan, told Automotive News. "We are still working on getting the performance aspects up to where we want them, and we do have a plan – an engineering road map – to get it done." According to AN, Mazda's initial plan with the 2.2-liter diesel was to build an engine so clean it could get by without an aftertreatment system, which generally accounts for the price premium of diesel engines versus their gas counterparts. The new system has come with performance issues, though, necessitating the delays. "If [we were] a commodity brand and didn't care about that, it would be on the market right now," O'Sullivan told AN. "But I know the people were expecting something from us, expecting certain drive characteristics and performance, and I didn't want to disappoint them." While O'Sullivan's defense of the diesel Mazda is admirable, the exec stops short of giving us an indication of when the new engine will finally arrive.