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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.

Detroit Auto Show prankster 'damages' hundreds of thousands of dollars of cars

Obtaining credentials for an auto show is generally a pretty selective process, especially at one of the world's premier shows, like Geneva, Los Angeles or Detroit. That didn't stop online prankster Dennis Roady from getting credentialed for the 2015 North American International Auto Show on behalf of a Russian YouTube channel to cover the show. While he wasn't brought on strictly to cause mischief, Roady couldn't help but have some fun at the expense of the product specialists during the serious business of covering the show. He took to an app called "Dude, Your Car," which allows Apple iPhone users to take snaps of vehicles and then edit them to add some serious, but fake, dents and scratches. Naturally, the pranking session was caught on video, where you can enjoy the sight of poor product specialists freaking out over damage to vehicles ranging from the Mercedes-Maybach S600 to the Audi R8 and a lovely Dodge Challenger. Take a look. News Source: howtoPRANKitup via YouTube, The Detroit News Humor Detroit Auto Show Audi Dodge Mercedes-Benz Coupe Luxury Performance Videos Sedan 2015 Detroit Auto Show prank

Mercedes-AMG considering turbo fours, hybrid sixes for future performance sedans

Think of the letters AMG and you'll probably end up picturing a performance sedan with a big V8. Such has become, after all, the Mercedes turning division's calling card. But with the introduction of its 2.0-liter turbo four, AMG is working at turning that notion on its head.
The highly potent engine produces 355 horsepower and is presently installed in the A45 AMG hatchback, CLA45 AMG sedan and GLA45 AMG crossover, giving Benz's smallest family a full range of performance models. But that might not be the full extent of the high-strung four-pot's use.
Speaking with AMG boss Tobias Moers, Britain's What Car? magazine reports that Affalterbach is considering slotting the same engine into larger models, particularly performance sedans like the C-Class. As we recently reported, Mercedes is already preparing to up the power from the turbo V6 in the C400 to slot a C450 Sport in below the C63 AMG. The C450 is expected to offer around 367 horsepower where the CLA45 AMG et al pack 355, but the lighter weight of the four-cylinder engine would likely offset the truancy of those extra dozen horses. Of course such a prospect would be much further down the pipeline than the C450 Sport which is expected to arrive much sooner.