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Why it's difficult to accurately test the efficiency of a plug-in car

When it comes to electric vehicles and plug-ins in general, the Environmental Protection Agency-certified range is a hugely important number. While actual range anxiety is largely psychological, the magic number does provide a point of comparison of buyers considering one EV over another. The driving distance is also often touted by automakers when marketing their models. Unfortunately, as Green Car Reports finds in a recent deep dive, the way the EPA calculates the figure is a convoluted mess, and discovering the reasons why is definitely worth the read. The issue isn't about bad science but instead comes down to vague wording. The EPA's accepted range test is sourced from an evaluation called J-1634 from the Society of Automotive Engineers, and it seems to provide balanced results for vehicles that automatically reach a single state of charge when plugged in. However for models with multiple charge settings, the situation gets complicated very quickly. Of course, these modes are often created in the software, meaning that a car's certified driving distance can change with just a few taps of the keyboard without the real world results owners might experience actually changing. By showing the test's effects on the certified range for the Tesla Model S, Nissan Leaf and Mercedes-Benz B-Class Electric Drive over the last few years, Green Car Reports makes a compelling argument that it's the evaluation that needs to change. Thankfully, it appears that the solution is a very simple one. Get the details here.

Mercedes releases first shot of AMG GT3

A week ago we got a rendering of the upcoming race-only Mercedes-AMG GT3, to be shown to the public for the first time at the Geneva Motor Show. Now, Mercedes has let loose a photo of the front of the car and it looks very serious, a trait undoubtedly helped by its link to the past: that grille motif goes straight back to the W154 Silver Arrows pre-war racer driven to the 1938 European Championship by Rudolf Caracciola. Those angry, angled and sunken headlights don't hurt, either. It will be ready in time for the 2016 GT3 season and come loaded with expectations, since the SLS AMG GT3 it replaces has been a victory machine around the world. Unlike that SLS, though, this car will spawn a hardcore road-going version - not to be called GT3 - with less weight and more power, armed to do battle with the coupe that comes first to mind when that alphanumeric is mentioned. With the way the AMG GT S already gobbles up circuits, we're prepared to be impressed by what comes next. Related Video: Featured Gallery Mercedes-AMG GT3: teasers News Source: Mercedes-AMG Motorsports Geneva Motor Show Mercedes-Benz Coupe Racing Vehicles mercedes-amg 2015 Geneva Motor Show gt3 fia gt3 mercedes-amg gt3

Mercedes expected to announce US HQ relocating to Atlanta today

Employees at Mercedes-Benz's US headquarters in Montvale, NJ, are set to gather today for the annual president's reception. Only this year, company chairman Dr. Dieter Zetsche is expected to fly in from headquarters to make a big announcement. That announcement, according to mounting speculation, is that MBUSA is moving to Atlanta. News of the potential move first broke around three weeks ago, suggesting that the German automaker was looking to relocate its US headquarters from New Jersey to somewhere in the South, with the Atlanta area tipped as the front-runner. Now sources are expecting that announcement to be made imminently. Although the specifics of the move have yet to be made public, Mercedes is tipped to be looking at moving into either a purpose-built facility or an existing office space in the Sandy Springs area, specifically near the intersections of Georgia 400 and Abertnathy, where UPS has its headquarters. The move is said to have hinged on a substantial incentives package worth nearly $50 million put together by the Georgia state government. The state of New Jersey is said to have offered similar incentives to keep Mercedes in the Bergen County borough of Montvale, where it employs 800 in its 141,000-square-foot office complex. One advertising company even put up billboards encouraging the company to stay, but if the reports prove accurate, it looks like their efforts may have been too little and/or too late. Mercedes wouldn't be the first automaker to move to the South, where numerous foreign carmakers have been also setting up factories. Toyota is also preparing to move its US headquarters to Texas, and though already based in Georgia, Porsche is preparing to move into a new $100 million facility, complete with on-site test track, closer to Atlanta's Hartsfield-Jackson airport that has grown into a major international hub. The move on Mercedes' part would put its US base of operations closer to its factory in Tuscaloosa, AL, and the port near Savannah, GA, from which it ships out the former's production overseas.