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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.

NHTSA investigating Bosch Power Xpress 240V EV chargers for fire risk

*UPDATED with Bosch's comment. Let's stamp out the flames of suspicion right up front. A new National Highway Traffic Safety Administration (NHTSA) investigation, while involving a 2013 Nissan Leaf and some smoke, is not about another EV fire. Not directly, anyway. "Nissan has determined by pictures that the car was not to blame for the incident" – NHTSA complaint This time, the subject of the NHTSA's lens is the Bosch Power Xpress 240V charging unit. NHTSA wants to know if an overheating charging cord caused smoke (NHTSA says there was no actual fire) in a Leaf owner's garage last fall. NHTSA says it will investigate, "to evaluate the scope, frequency, and consequence of the alleged defect." Up to 50 of the charging units could be involved, and NHTSA decided to act based on a single customer complaint that was filed in August 2013. The investigation opened April 15, so it will likely be a while before we know any more concrete details. For now, you can read the official details of the investigation and the original complaint - which says, "Nissan has determined by pictures that the car was not to blame for the incident. They are blaming the charging station for the failure. They have denied any warranty coverage. The burden of the bill has been placed with the customer" – below. Nissan's senior manager of corporate communications, Brian Brockman, sent AutoblogGreen a statement that says Nissan will work with NHTSA and Bosch and points out that, "This inquiry is focused on the electric vehicle charger and is directed at the charger supplier, Bosch." Requests for comment from Bosch were not returned, but we will update this post when we hear back. Bosch spokesperson Cheryl Kilborn told AutoblogGreen that, "Bosch is reviewing the filing and will work cooperatively with NHTSA as we seek to identify the root cause." INVESTIGATION Subject : Bosch EV charging cord overheating Date Investigation Opened: APR 15, 2014 Date Investigation Closed: Open NHTSA Action Number: PE14011 Component(s): ELECTRICAL SYSTEM All Products Associated with this Investigation close Equipment Brand NamePart No.

Recharge Wrap-up: utility sells discounted Powerwall, Nissan-Renault builds 340K EVs

Vermont electric utility Green Mountain Power is selling discounted Tesla Powerwalls to its customers in hopes of balancing the grid. The battery packs would be used not just to help customers store renewable energy for home solar systems or as backup power, but also to occasionally discharge power back to the grid when needed. In addition to this decentralized energy storage being useful to customers, it also benefits the utility by taking demand off energy generating infrastructure during periods of peak demand. The pilot project will put 500 Tesla Powerwalls in customers' homes. Learn more at Green Car Reports, or in the story from Vermont Public Radio. Together, Nissan and Renault have built 340,000 electric cars. The allied Japanese and French automakers hit 100,000 EVs in July 2013, 200,000 in November 2014, and a quarter million in June of 2015. The Nissan Leaf, which first went on sale at the end of 2010, makes up the bulk of the EVs the Renault-Nissan Alliance has sold. Renault delivered its 50,000th Zoe EV in April 2016. Leaf sales have declined in the US in recent months, due at least in part to the anticipation of the Chevrolet Bolt and Tesla Model 3. Nissan, however, is expected to update the Leaf with a 200-mile driving range in the coming years. Read more at Green Car Reports. Students at the Bearys Institute of Technology (BIT) in Karnataka, India have built what they call the Hybrid Water Car. The car uses a system to electrolyze hydrogen from water and add it to the fuel for more efficient combustion. The system has been placed into a chopped up, lightweighted Maruti Omni. While the benefits of onboard hydrogen electrolyzers have been debated for some time, the BIT students don't plan to stop there, as their next project car will be fueled completely by hydrogen. Read more from Car and Bike. Facebook has hired Rich Heley away from Tesla. The former Tesla VP of Product Technology is making the move to the social media giant's new Building 8 research lab. Heley joined Tesla in November 2013 after working at Apple. Read more at Automotive News.