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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.

Volkswagen rules out more potent Polo R

Volkswagen may be planning ever more powerful versions of its Golf, but don't expect that lust for power to trickle down to the smaller Polo anytime soon as the German automaker has reportedly ruled out the prospect of making a Polo R. This according to Autovisie, the automotive section of Dutch newspaper De Telegraaf, in speaking to VW representatives at the launch of the new Polo GTI. Where the previous Polo GTI offered 177 horsepower, the new one packs 189 and is available with either a six-speed manual or seven-speed dual-clutch transmission. The company briefly offered a Polo WRC Street with 220 horsepower, but that was only for a limited edition that Autovisie says will not be repeated for mainstream production. Which may just be for the best, as far as we're concerned, as no versions of the Polo are offered in the US, and we don't need yet another piece of forbidden fruit we can't get our hands on. The decision may seem at odds with the Polo R WRC rally machine with which Volkswagen has been dominating the World Rally Championship for the past two seasons, but was likely made in order to keep the Polo from infringing on Golf territory. VW currently offers the Golf GTI with 210 horsepower and the Golf R with 292, and showcased an even more powerful version with nearly 400 hp.

VW boss confirms Subaru-aping Golf Alltrack for US

Subaru needs to watch out, because the Japanese brand with a utilitarian image has a big bull's eye on its back. Not only is Acura considering going 100-percent all-wheel drive in a bid to mimic the successful automaker, Volkswagen has just confirmed that the Golf Alltrack is coming to the US as another competitor for Subaru's popular Outback crossover. Volkswagen Group of America CEO Michael Horn has confirmed the addition of the higher-riding, all-wheel drive version of the Golf SportWagen to Automotive News, indicating that the model will arrive in the US in 2016. "That's what our dealers, our customers, are asking us for," he said to the industry publication. The Golf Alltrack, which debuted at the Paris Motor Show in early October, has an extra 0.75 inches of ride height and protective black cladding all the way around. Its biggest mechanical differentiator from other Golfs is its Haldex all-wheel drive system, a setup that can completely unhook from the rear axle when not needed to save fuel. In Europe, the Alltrack is available with a turbocharged 1.8-liter with 178 horsepower and two diesels offering between 109hp and 182 hp. However, Horn made no mention of likely powertrains for the US. Horn tells Automotive News that all-wheel drive tooling is currently being installed at the Puebla, Mexico, factory where the standard Golf Sportwagen is built. VW might have tipped its hand about this possibility several months ago when press shots of the wagon were released for the US with TDI and 4Motion badges. Horn says he expects even the front-wheel drive version to be a sales hit here, suggesting it may eventually account for 50 percent of the Golf range's volume.