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This map reveals the cleanest vehicles based on location

Naysayers love to point out how dirty the electricity grid mix is when it comes to charging electric vehicles. Curmudgeons are eager to jump into any conversation about EVs to enlighten the lucky listeners about how plug-in cars contribute to pollution, sometimes even throwing in a dash of climate-change denial for good measure. (Thanks, buddy. Pray, tell me more about the plight of oppressed SUV owners.) Unless someone buys an EV just because they think they're cool (which, yeah, they often are), they probably have at least a passable understanding of their environmental pros and cons. As many EV owners are already aware, location has a lot to do with any particular plug-in car's carbon footprint. Still, there's always more to know, and knowledge is not a bad thing, especially if one uses it to do the right thing. That's why this handy-dandy map from Carnegie Mellon University is so interesting. CMU researchers have compiled information about the lifecycle greenhouse gas emissions of various EVs based on where they're charged, as compared to gasoline-powered vehicles. The researchers looked at the Nissan Leaf, Chevrolet Volt, and Prius Plug-In Hybrid versus the gasoline-dependent Toyota Prius hybrid and the stop-start-equipped Mazda3 with i-ELOOP and compared grams of CO2 emitted per mile. CMU takes into account the grid mix, ambient temperature, and driving patterns. CMU takes into account the grid mix based on county, as well as ambient temperature and driving patterns in terms of miles traveled on the highway or in the city. For instance, if you drive a Nissan Leaf in urban areas of California, Texas, or Florida, your carbon footprint is lower than it would be if you were driving a standard Toyota Prius. However, if you charge your Leaf in the Midwest or the South, for the most part, you've got a larger carbon footprint than the Prius. If you live in the rural Midwest, you'd probably even be better off driving a Mazda3. Throughout the country, the Chevrolet Volt has a larger carbon footprint than the Toyota Prius, but a smaller one than the Mazda3 in a lot of urban counties in the US. The Prius and Prius Plug-In are relatively equal across the US. Having trouble keeping it straight? That's not surprising. The comparisons between plug-in and gasoline vehicles are much more nuanced than the loudest voices usually let on.

Production Mazda Vision Coupe concept, GRMN Supra, new BRZ/86 coming

After writing about what's in store for the next-generation Subaru WRX, Japan's Best Car magazine is back with more spy work on what's ahead for the coming Mazda sedan, fighting-spec GRMN Toyota Supra, and next-generation Subaru BRZ/Toyota 86. All three are supposedly headed for previews at this year's Tokyo Motor Show before rolling out in 2021 and 2022. Mazda showed the Vision Coupe concept at the 2017 Tokyo show, then sneaked a mention of a rear- and all-wheel drive "Large Architecture" and two inline-six engines into a 2019 investor's report. Best Car says that concept's production version will house a 3.0-liter Skyactiv-X SPCCI inline-six with "M-Hybrid" 48-volt assistance. Output figures remain a mystery, but the mag says engineers are aiming for 345 horsepower. The real deal isn't slated for dealers until 2022, bringing what Mazda bills as a "BMW, Audi quality car at the price of Volkswagen." A further treat: Best Car says the Hiroshima automaker is laying out a two-door version on the same platform. Not even a month after 2020 Toyota Supra chief engineer Tetsuya Tada told us, "With a sports car, the promise is to offer more performance with each additional version," this report says the full-fat GRMN Supra will raise the stakes. Expected in the latter stages of 2021, the current 335-hp Supra will get an "output eventually close to 400 ps" (about 394 horsepower) from its BMW-source 3.0-liter straight-six. Along with that will come a lighter, stiffer body, and a sportier suspension tune to manage and make the most of the 60-horse increase. Best Car says the next-generation Toyota 86 / Subaru BRZ will move to a new platform, without specifying whether it would be Toyota's TNGA platform suggested by a report in April — not that there are many other options. Neither the footprint nor the body dimensions are predicted to change, and transmissions will continue to include a six-speed manual and a six-speed automatic. The new platform will hold a new engine, although it won't be the revelation many fans want. The magazine says the Subaru 2.0-liter FA20 will retire, making way for the Subaru 2.4-liter FA24. The FA24 is the same engine in the Subaru Ascent crossover, where it produces 260 hp and 277 lb-ft. There'll be no such fireworks for the sporty twins due in the first half of 2021, output reported to be "improved to 220 ps," or 217 hp — a 12-hp bump over the current figure.

Mazda CEO closes door on talk of RX sports car revival

Some rumors in the auto industry simply refuse to die. Over the last decade, a few of the strongest have focused on Japan. A few years ago, we could have explained away the constant whispering over a new Toyota Supra, Acura NSX or Mazda RX-7 as nostalgia for Japan's golden era of performance. Today, though is different.
We already have the Nissan GT-R, and, thanks to the Toyota FT-1 Concept, a Supra successor finally appears to be on the way. Acura will someday, allegedly, deliver on its promise to put the NSX on sale. So where does that leave the third member of the Japanese performance trio mentioned above? Well, um, it still isn't happening.
"We don't have that kind of vehicle in our future product plan," Mazda CEO Masamichi Kogai told Automotive News when asked about a successor to the rotary-powered RX line. "If you increase the number of segments, then the resources we can allocate to each will decline and that will prevent us from developing truly good products."