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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.

Aston Martin and Daimler continue talks on SUV project, CEO required

The Aston Martin Lagonda SUV concept revealed at the 2009 Geneva Motor Show didn't earn the plaudits the company is used to when it reveals new models, and it has lived an uncertain life ever since. Thought to have been scrapped along with the entire revival of the Lagonda brand, then thought to have been resurrected due to Chinese, Middle Eastern and Russian demand, another year passed before we heard more definitive talk about an Aston Martin expansion when AutoCar reported that the Lagonda could be built on one of Mercedes-Benz's AMG SUV platforms.
A report in Automotive News Europe indicates plans have gotten serious, its unnamed sources saying that the English carmaker is talking to Daimler "to extend their cooperation to building an SUV." Neither Daimler, Aston Martin nor Investindustrial, the managing partner among Aston Martin's ownership consortium, would comment. But with Investindustrial having pledged to expand the range, competitors like Bentley, Maserati and Lamborghini getting into the SUV racket and clear demand from current and future customers, it's easy to believe Aston Martin is working hard to put the pieces together.
One further potential bump on the road to an Aston SUV is the company's search for a new CEO. Ulrich Bez relinquished to top spot at the company at the end of 2013, and Aston reportedly will not finalize its model strategy without a new CEO in place.

Mercedes GLE Coupe spotted in almost undisguised AMG form

Say what you will regarding the form and function of the BMW X6, the bottom line is that BMW essentially pioneered a winning formula, sloping a roofline onto an existing model to make a new and highly lucrative) derivative. No wonder rival Mercedes-Benz is clamoring to follow suit with models like the one pictured here. Under development for some time now, the model originally slated to be called the MLC and now expected to be dubbed GLE Coupe looks about ready for its big debut. It's based on the replacement for the current M-Class (to be rechristened GLE) but with that vital sloping roofline to make it more rakish. This particular example seems to be an AMG version and was spied with only minimal camouflage around the front and rear bumpers while undergoing testing in snowy climes. That could be the full-on GLE63 AMG performance variant, or the new AMG Sport model destined to debut at the Detroit Auto Show next month. If it's the former, expect it to be packing the same 4.0-liter twin-turbo V8 as the new Mercedes-AMG GT, where it produces either 462 horsepower or 510 depending on spec - ready to take on the X6 M and whatever Audi is preparing to throw at it.