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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.

Cadillac, Daimler execs take swipes at Tesla

Despite the financial ties between Daimler and Tesla Motors, at least one Mercedes exec thinks the electric automaker doesn't have a bright future. And over at Cadillac, the message is that Tesla doesn't pose a threat but offers the luxury arm of General Motors more of classroom experience. The Mercedes story runs like this. Mercedes-Benz USA president and CEO, Steve Cannon, said at the New York Auto Show last week that Tesla has "no network" and only offers "little shops that don't have service capacity." He also said: "Folks are buying a Tesla now because they're kind of cool, but if you're a Tesla buyer, you have to have multiple cars. With Mercedes, you have a whole network. You've got no worries. ... Tesla is great, but you've got plenty of well-established brands that mean luxury, like Porsche or Mercedes-Benz, and how long do you think we're going to wait and let Tesla be out there alone [selling premium electric cars]?" "Treehuggers do not buy new luxury cars" – Uwe Ellinghaus For Cadillac's global chief marketing officer, Uwe Ellinghaus, Tesla's EV success represents little other than "a great opportunity and a learning exercise for all of us, and will help us traditional manufacturers to think twice about electric mobility." He added that, "I am not afraid of Tesla. ... There is no willingness to really sacrifice on the traditional qualities of a luxury car. These are not cars for treehuggers, as treehuggers do not buy new luxury cars." Ellinghaus made the comments during a panel discussion at the 2014 Automotive Forum. Perhaps the lesson of Tesla's offer of free Supercharging to Model S owners is what led to Cadillac to recently announce a deal with Chargepoint that gives ELR drivers access to that company's 16,500 charging stations. Read more details on that below. Cadillac and ChargePoint Bring EV Customer Luxury Driving Experience World's largest, most open electric vehicle charging network available to ELR drivers 2014-04-16 NEW YORK – Cadillac today announced a partnership with ChargePoint, the largest and most open electric vehicle-charging network in the world. The collaboration brings Cadillac ELR drivers immediate access to more than 16,500 charging locations on the ChargePoint network. The ELR electrified luxury coupe went on sale at the end of 2013. It embodies Cadillac's Art & Science design philosophy, combining provocative design with progressive technology.

US buyers show little interest in big hybrids

The idea of producing large, luxury-vehicle hybrids is turning into a "what were they thinking?" exercise in futility, USA Today reports. General Motors is discontinuing hybrid versions of the Cadillac Escalade, Chevrolet Tahoe and GMC Yukon SUVs, while Mercedes-Benz and Toyota's Lexus division are doing the same with their S-Class hybrid and LS hybrid sedans, respectively. The culprit? Big price increases for fuel economy improvements that border on the unimpressive. Granted, the Escalade hybrid gets 31 percent better fuel economy than the standard version, but that still maps out to a combined fuel-efficiency rating of just 21 miles per gallon. That can be seen as a worthwhile increase, if it didn't cost over $8,000 extra. The 2014 Escalade Hybrid, for example, starts at $74,425 while the non-hybrid can be had for $66,295. Meanwhile, the Lexus full-size hybrid costs $6,000 more than the regular version but only gets 1-2 mpg better combined fuel economy. The result of all these high costs? Low sales. Through April, GM sold 82 of its hybrid SUVs and pickups, down from 541 a year earlier. And the LS hybrid sales were in single-digit territory for April. That isn't stopping Lexus from promoting its hybrids as the right solution (with the wrong facts), though. There are still automakers giving big hybrid vehicles a shot, though. Nissan's Infiniti division is selling a hybrid version of its QX60 and says an impressive 10 percent of QX60 buyers choose the hybrid, which costs just $3,000 more. Looks like money talks. Featured Gallery 2015 Cadillac Escalade: First Drive View 35 Photos News Source: USA TodayImage Credit: Copyright 2014 Brandon Turkus / AOL Green Infiniti Lexus Mercedes-Benz Hybrid lexus ls gmc yukon mercedes-benz s-class infiniti qx60 chevrolet tahoe