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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.

Former Porsche boss Wiedeking won't face criminal charges over VW bid

Hedge fund managers have been suing Porsche for years now, alleging that the car company lied about its intentions during its failed attempt to take over Volkswagen, a gambit that caused them billion in losses. Over the same period, authorities in Stuttgart built a criminal case against former CEO Wendelin Wiedeking (above, left) and Chief Financial Officer Holger Härter (right), filing charges in December 2012. When those fund plaintiffs lost their most recent court case, one of the dimming lights in the dark and receding tunnel was that the criminal investigation might unearth more evidence about Porsche's actions that could help the plaintiffs in pending litigation.
Bloomberg reports that another light has gone out, though, with a Stuttgart court dismissing the market manipulation case before going to trial because, as a court spokesperson said, "there wasn't enough evidence backing up the charges." When prosecutors get the files back from the court, they have a week to decide to refile, but unless they've been sandbagging evidence that could bolster the case, the only lights at the end of the tunnel will be those welcoming Wiedeking and Härter back to the world of legally unencumbered men.

2013 Volkswagen Jetta Hybrid

More Fun Than A Prius, Less Sensible Than A TDI
Let's have some fun, and do some math. We're talking pretty rudimentary stuff, multiplication and division, to figure out if the upcoming Volkswagen Jetta Hybrid can make a baseline case for itself against two very strong competitors in this segment. The competitors in question, at least for now, are two more Jettas: the diesel-drinking TDI and the fit-for-the-masses SE with VW's long-serving 2.5-liter engine.
To keep the equations clean and simple (hey, we're writers), we'll calculate based on the most flattering EPA miles per gallon stat from highway driving for all cars, assume a healthy 20,000 miles driven per year, and factor in today's average cost for the respective fuels these three require: diesel (TDI), regular (SE) and premium (Hybrid). We'll also start with the base prices for all models.