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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 widens luxury sales gap on strong early CLA demand

Mercedes-Benz CLA sales have been booming, with the Stuttgart-based manufacturer moving 2,300 of the sleek four-doors in its first week on sale. That is astonishing. Mercedes moved nearly twice as many CLAs (which start at $29,900) in one week than Jaguar, a brand that is on a very solid roll, sold in all of September. Ignoring the price differences between the Jag line and the CLA, that is still wildly impressive.
Mercedes has been pushing the CLA in television ads, using a shortened version of its Super Bowl spot, which starred William Dafoe, Usher and Kate Upton. "As the bargain entrance into the Mercedes portfolio, we weren't sure how luxury buyers would react," Kelly Blue Book auto analyst Alec Gutierrez told Bloomberg.
The CLA push was just part of MB's 6.7-percent increase in September sales, which were also helped along by a 17-percent jump in E-Class sales. That surge has allowed Mercedes to widen its 2013 sales lead over its rival, BMW, to 2,491 cars, according to Bloomberg. If CLA sales continue at this rate, we can only expect that margin to grow.

German carmakers recall 630,000 diesel vehicles in Europe

Mercedes, Opel, Porsche, and Volkswagen will recall over 630,000 cars in Europe, according to reports Friday. No diesel car has been able to get under the legal emissions limit in real-world driving, according to a German government investigation. While only Volkswagen Group has been using a specific "defeat device", other carmakers have been playing with their exhaust gas recirculation (EGR) systems. Depending of the manufacturer, the systems have been cut off at a certain temperature. In a specific test cycle the systems operate to fulfill the legal requirements, but in everyday use the limits are exceeded. According to the magazine Der Spiegel, the supplier Bosch is behind this programming and has provided it to all German automakers. The mentioned carmakers have announced recalls, but many other manufacturers are also mentioned by name in the report, including Alfa Romeo, Chevrolet, Dacia, Fiat, Ford, Hyundai, Jaguar, Jeep, Land Rover, Nissan, Renault, and Suzuki. PSA Group, which produces Peugeot, Citroen, and DS cars, declared yesterday that its offices were raided following an emissions investigation. Related Video: News Source: AutocarImage Credit: Getty Images Government/Legal Green Recalls Mercedes-Benz Porsche Volkswagen Opel Emissions Diesel Vehicles diesel emissions investigation