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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.

Renault-Nissan has sold more EVs than its next two competitors combined

Nissan may not be doing so hot with sales of its Leaf electric vehicle in the US this year, but the Japanese automaker and its France-based partner Renault still remain the gold standard of electric-vehicle sellers. Thanks to numbers crunched by the good people over at EV Sales, we learn that the Renault-Nissan Alliance has moved more than 265,000 electric vehicles around the world. That accounts for more than a quarter of all the EVs sold worldwide and is more than Mitsubishi's 11 percent share and General Motors' 10 percent share combined. Nissan and Renault surpassed the quarter-million electric-vehicle mark in June. There are shifts afoot, though. Renault-Nissan's global EV market share is only 18 percent this year, and the Alliance is losing share to companies like Volkswagen, BYD, and, to a lesser extent, BMW. That shift can be seen in this year's US sales numbers, where the Nissan Leaf has pretty much plunged down. In fact, with VW and BMW broadening their inventory of plug-in models, Germany can claim the third-place spot in the list of countries with the most "electric" automakers, after China and Japan. The US is trailing, even if many people associate electric cars with California's Tesla. On that note, both Ford and General Motors have lost electric-vehicle market share this year, while Mitsubishi has essentially tread water. GM's numbers (and Nissan's, for that matter) need some context because Americans have been holding off on purchasing a first-gen Chevrolet Volt extended-range plug-in while the automaker readies a new and improved version. All told, Japanese companies have produced the most plug-in vehicles, accounting for 39 percent of the world's market so far, while the US is responsible for about one in four electric vehicles ever made. Sales '15 % Total Sales % Renault-Nissan 44,003 18 265,205 27 VW (VAG) 28,480 12 42,743 4 BYD 25,592 11 51,338 5 Tesla 24,867 10 83,587 9 Mitsubishi 24.117 10 108,883 11 BMW 15,469 6 31,822 3 Ford 11,548 5 65,696 7 GM 11,617 4 100,818 10 Featured Gallery 2015 Nissan Leaf View 12 Photos News Source: EV Sales Green Nissan Renault Electric ev sales renault-nissan

Chevy Volt sales drop in June, Nissan Leaf inches upwards

Different month, same story. That's the gist of the monthly US sales numbers from the Chevy Volt and the Nissan Leaf. These were the first two mass-market plug-in vehicles to go on sale in the US and we've been comparing their sales numbers for what seems like ages now. So far, the 2014 tale of the tape shows the all-electric once again trumping the plug-in hybrid. The last time the Volt outsold the Leaf was in October 2013. Chevrolet sold 1,777 Volts in June. That was good enough to be the Volt's best sales month of the year, but it's down 34 percent from the 2,698 units sold in June 2013. In fact, it's on par with the 1,760 Volts sold in June 2012. Given the steady sales, General Motors might need to push up the release of the next-gen Volt to gin up excitement, especially if it also offers some of the things that current Volt drivers say they want improved: more range, a lower price and a fifth seat. GM also said it sold 85 Spark EVs in June, an increase of 215 percent over June 2013 Nissan sold 2,347 Leafs last month. The good news continues for Nissan, which says it sold 2,347 Leafs last month. That's an increase of 5.5 percent over 2013 numbers and makes 2014 the best June ever for Leaf sales. Let's credit Texas. Toby Perry, Nissan's director of EV sales and marketing, said in a statement that, "Since the Texas state incentive went into effect in May, we've seen a big jump in Leaf sales in the Austin, Dallas and Houston markets. Our dealers are telling us that they saw more traffic in their stores, and they had their best Leaf sales performance in the last weekend in June." Even with that increase, Atlanta remains the top Leaf market. Nissan has sold 12,736 Leafs in the US so far this year; Chevy 8,615 Volts. Our detailed monthly sales write-up of green cars in the US, including plug-in vehicles, hybrids and diesel cars, is coming soon. For now, we invite you to discuss these numbers in the Comments. Related Gallery 2013 Nissan Leaf View 55 Photos News Source: GM, Nissan Green Chevrolet Nissan Electric Hybrid PHEV ev sales