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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-Benz GLA Concept crossover leaked ahead of Shanghai debut

With just a few days left before the start of the Shanghai Motor Show, images of the Mercedes-Benz GLA Concept compact crossover have emerged online. The little 'ute is based on the small A-Class hatchback, and though it shares an identical wheelbase, is larger in every other dimension.
Looking like a rough-and-tumble five-door hatchback on the tippy toes of its 20-inch wheels, the GLA is most certainly destined for production in a toned down form that will borrow many bits and pieces from other cars based on this platform like the aforementioned A-Class and the CLA-Class sedan. Carscoop reports that the production version of the GLA will be revealed at the Frankfurt Motor Show in September of this year, with sales to the public starting in 2014.
Since it's based on the A-Class, we expect that the production GLA-Class will be powered by your choice of Mercedes' 2.0-liter turbocharged inline four-cylinder engine and a diesel or two, and will offer transmissions that include the company's seven-speed DCT and perhaps a six-speed manual (at least in Europe). If the GLA follows the same path as the two cars before it, expect a GLA45 AMG producing over 300 horsepower, as well. As for what powers the GLA Concept, that just might remain a mystery until the vehicle is officially revealed in China.

Daimler cutting Mercedes and Smart prices by 18% in Switzerland

Automakers including Daimler and PSA are now offering substantial discounts in Switzerland to make it more affordable for Swiss customers to buy their cars, according to the latest from Bloomberg. The move, instituted by two of Europe's largest automakers, comes in response to the surprise decision last week by the Swiss National Bank to suddenly abandon its longstanding policy of capping trading of the Swiss Franc to 1.20 francs per euro. The policy has sent the value of the franc soaring, making imports into Switzerland less expensive while increasing the value of its exports. The discounts being offered by the automakers could therefore be viewed more as price adjustments to better match the changing currency value rather than an actual incentive. But whichever way you look at it, a new Mercedes or Smart will now cost Swiss buyers 18 percent less than the list price, while Peugeot and Citroen dealers in the Confoederatio Helvetica are chopping 1,000 francs ($1,144) off the price of a new passenger car or 1,500 francs ($1,716) for a new commercial vehicle. Conversely, high-end Swiss watchmakers like Rolex and Patek Philippe are looking at increasing their prices to keep up with the currency fluctuation, particularly in Japan, where the yen has dropped 17 percent against the franc in the past few days. News Source: BloombergImage Credit: Sandro Campardo/Keystone/AP Mercedes-Benz smart Car Buying Citroen Peugeot switzerland