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These are the 'Greenest' and 'Meanest' cars in 2015

As has become tradition, the American Council for an Energy-Efficient Economy (ACEEE) has come up with a ranking of what it refers to as the "greenest" cars of 2015, and, by way of contrast, a list of the so-called "meanest" cars, so those who value eco-friendliness over all else can choose which vehicles they should or should not consider buying. As you may expect, electric cars make up the majority of the greenest cars on the list, but, perhaps surprisingly to many, the Tesla Model S didn't make the cut. It's worth noting, too, that where the electricity an owner uses to charge their electric vehicle has a big impact on its overall environmental impact. "A car that is charged using electricity generated from natural gas or renewables is going to have significantly less impact on the environment than one charged on a coal-heavy grid," says ACEEE lead vehicle analyst Shruti Vaidyanathan. The ACEEE's list for 2015 looks very different than it did in 2014. It's an interesting collection, though – and we're sure this goes without saying, really – we'd recommend doing a bit more research into each vehicle and how it might fit into your daily life before making any purchase decisions. Click here to see the ACEEE's list of the Greenest and Meanest vehicles sold in the United States in 2015. Green Bugatti Chevrolet Fiat GM GMC Mercedes-Benz Nissan RAM smart Toyota greenest greenest cars

GM files for Z71 Trail Boss trademark

Try as they might to keep their plans a secret, automakers have their hands tipped through a variety of methods – be they through loose lips, spy shots or patent and trademark applications. That's how we know, in this instance, that General Motors is working on (or at least considering) an off-road machine wearing the name Z71 Trail Boss – the name which our compatriots at AutoGuide.com tell us that GM has registered for use on light-duty trucks. Now if that alphanumeric designator sounds familiar, it should. GM has long used it to designate the off-road packages on many of its body-on-frame trucks from Chevy and GMC. These days you can order a Z71 package on the Chevy Colorado, Silverado, Tahoe and Suburban and on the GMC Canyon, Sierra and Yukon. The package typically includes components like a beefed-up suspension bits, high-capacity air cleaner and underbody protection plates. The Trail Boss designator would seem to suggest something further reaching than a suspension package, though. Just what it would entail we don't know; minds immediately start running toward Chevy or GMC going after the Ford F-150 Raptor, but we'll likely be looking at something closer to the Trailhawk packages Jeep offers on the likes of the Renegade and Cherokee. Featured Gallery 2015 Chevrolet Tahoe Z71 View 16 Photos News Source: AutoGuide.comImage Credit: Chevrolet Chevrolet GM GMC Truck SUV Off-Road Vehicles patent trademark

2019 GMC Sierra 1500 SLE spy shots show new bumpers and tailgate

When the new 2019 GMC Sierra 1500 debuted two weeks ago, GM's truck division showed off just the two top trims, SLT and Denali. While the Denali might be the flagship Sierra, it's not likely to be the volume seller (though Denali models makes up almost a third of total GMC sales). These new spy shots show off the midrange SLE trim. It takes a more conservative, toned-down appearance compared to its brash brethren. The most obvious visual changes come at the front and rear. That big grille remains, but there are just three horizontal bars rather than the busier design from the SLT or Denali. The fog lights have been removed, too, though the C-shapped LED accent in the headlights has carried over. Out back, the SLE trim makes do without the trick MultiPro tailgate (it's limited to SLT and Denali models). It also has a different bumper as the exhaust exits just behind the right wheel. Badging on the fenders indicates that the truck has the updated 5.3-liter V8, meaning it's paired with an eight-speed transmission. The 6.2-liter V8 gets the new 10-speed auto. A 3.0-liter diesel inline-six will be available sometime down the road. GMC hasn't announced pricing, fuel economy or power ratings, but expect to see something in the next few months. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.