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Honda Civic overtakes Toyota Corolla as America's best-selling compact

The battle to claim October's best-selling compact sedan title has been won by the Honda Civic. The Japanese four-door sold 27,328 units, leaving the Toyota Corolla - September's title holder - in its wake with 23,637 units sold. In terms of year-to-date sales, the Civic sits at 280,899 units, with the Corolla trailing at 257,184 vehicles.
Sitting in third place, separated by a significant gap from the leaders, is the Chevrolet Cruze with 16,087 units sold. The Ford Focus earned fourth, with 15,108 units moved out of showrooms. (It is interesting to note that while the Civic and Corolla have both enjoyed double-digit sales increases year-over-year, the Cruze and Focus have seen significant decreases during the same period.)
Sales of the Hyundai Elantra hit 14,876 units, putting it in fifth place, with the Volkswagen Jetta earning sixth place with 11,710 units. Rounding out the ten top sellers were the Nissan Sentra (8,399 units), Mazda3 (7,647 units), Dodge Dart (5,617 units) and Subaru Impreza/WRX (4,923 units). The Kia Forte (4,706 units) and Volkswagen Golf (2,249 units), eleventh and twelfth respectively, have fallen behind.

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.

Submit your questions for Autoblog Podcast #336 LIVE!

We're set to record Autoblog Podcast #336 tonight, and you can drop us your questions and comments via our Q&A module below. Subscribe to the Autoblog Podcast in iTunes if you haven't already done so, and if you want to take it all in live, tune in to our UStream (audio only) channel at 10:00 PM Eastern tonight.
Discussion Topics for Autoblog Podcast Episode #336
Jeep rear-mounted fuel tank controversy