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VW decides against active-cooling system for e-Golf lithium battery

When the 2015 VW e-Golf was introduced at the LA Auto Show last year, VW said it would come with a water-cooled battery. During the Detroit Auto Show, when the car was trotted out again, VW released a new press release that stripped out the "water-cooled" language, but this change went unnoticed. During a recent VW event in Germany, a friend from Green Car Reports realized that the battery on display did not seem to have any water-cooling mechanisms. That set us off on a bit of a sleuthing and we have now learned that VW is not going to include any active cooling in the upcoming e-Golf. In fact, the company is entirely confident that this car - because of what it's designed to do - doesn't need it. "The need for a cooling system wasn't there" - VW's Darryll Harrison VW has been working on an electrified Golf for ages now, and so changes to the plan are to be expected. But battery cooling is vitally important not just to keep the car operating properly but because when things get too hot, there can be serious public relations problems. Nissan began testing a new battery chemistry for the Leaf in 2013 after an uproar from warm-weather EV drivers in Arizona who were experiencing worse-than-expected battery performance. The Leaf has always used an air-cooled battery, which is another way to say that there is no active cooling system (more details here). Tesla CEO Elon Musk once said this approach is "primitive." So, why is VW following the same path? We asked Darryll Harrison, VW US's manager of brand public relations west, for more information, and he told AutoblogGreen that VW engineers discovered through a lot of testing of the Golf Mk6 EV prototypes, that battery performance was not impacted by temperatures when using the right battery chemistry. That chemistry, it turns out, is lithium nickel manganese cobalt oxide (NMC) in cells from Panasonic. These cells had "the lowest self-warming tendency and the lowest memory effect of all cells tested," Harrison said. He added that VW engineers tested the NMC cells in places like Death Valley and Arizona and found they didn't warm very quickly either through operation, charging (including during fast charging) or through high ambient temps. "The need for a cooling system wasn't there," Harrison said.

Thanks to VW, BMW's 2017 diesels will be delayed

BMW confirmed Monday that US sales for its model-year 2017 diesel vehicles will be delayed because US regulators are taking longer than expected to certify the models. Bimmer, which sells diesel-powered 3-Series, 5-Series, X3, and X5 vehicles in the US, didn't give a timetable of when such domestic sales would start. Autoguide had previously reported of the potential delay for sales of US diesels, which account for about six percent of BMW's total sales in the US. "The product certification of all MY2017 BMW diesel models (328d Sedan, 328d Sports Wagon, X3 xDrive28d, X5 xDrive35d) has been delayed due to testing logistics," BMW spokeswoman Rebecca Kiehne wrote in an e-mail to Autoblog. "As a result, production of these models will commence once homologation has been finalized." US regulators appear to be taking a more deliberate approach to certifying diesel vehicles in the wake of the Volkswagen diesel-emissions scandal, which broke last September. Late last month, VW reached a settlement with US regulators that will cost the German automaker about $15 billion. With about a half-million impacted VW vehicles on US roads, the company will repurchase cars, end leases early, maybe fix some vehicles, and improve zero-emission vehicle technologies. Additionally, last week, VW reportedly told US dealers that they'd be compensated an undisclosed amount for their troubles. Some 2016 BMW diesel models were already subject to more stringent US testing procedures because of the VW situation. The BMW X5 xDrive35d was among the models that underwent more rigorous testing from the US Environmental Protection Agency (EPA) late last year. Other diesel models that received the additional scrutiny included General Motors' 2016 Chevrolet Colorado and GMC Canyon. Related Video:

Winterkorn not under official investigation in Germany

Prosecutors for the state of Lower Saxony in Braunschweig, Germany, are now saying that former Volkswagen CEO Martin Winterkorn is no longer specifically under investigation for his role in alleged fraud related to the automaker's diesel emissions scandal. The lawyers are clarifying that there's no formal inquiry into the exec because there's not yet enough evidence to establish a suspicion of wrongdoing, Bloomberg reports. However, they are still looking into VW's actions. Earlier this week, the prosecutors announced they had begun an initial investigation into Winterkorn for alleged fraud in the emissions regulation evasion. At that time, there were reportedly 12 complaints asking the lawyers to look into the case, including one from VW. Under German law, only a person could be charged for the potential crimes, rather than a whole company. "An initial suspicion must be based on facts, and you must begin an investigation before you can establish the facts," Christoph Schalast, a professor at the Frankfurt School of Finance, said to Bloomberg. Meanwhile in the US, the investigation continues into VW. The Department of Justice has the support from at least two senators to pursue criminal and civil charges against the company. The attorneys general in at least 29 states are also looking into things. Meanwhile, lawyers are building a class-action lawsuit, as well. To help in its defense, the automaker is employing the help of the same firm that defended BP during the Deepwater Horizon oil spill. Related Video: