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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.

Top 10 small cars with the longest total driving range

Editor's Note: Since this article was originally posted in the spring of 2015, much has changed in the automotive landscape, especially among those shopping for small car economy. With thanks to Volkswagen for their blatant cheating – and subsequent cover-up – on diesel emissions, the largest player in the diesel passenger car segment isn't playing – they're paying; billions are going for both car buybacks and federally-imposed penalties. And for a few VW execs there exists the very real possibility of jail. With the absence of a big player and the abrupt entrance – via Chevy's new Bolt – of an affordable EV with 200+ miles of range, we've limited the diesel listings to Jaguar's new XE. And for those wanting an updated look at efficiency and range, Autoblog has it – or the EPA has it. Long before electric vehicles were part of the mainstream conversation, car lovers and skinflints alike would boast about the total range of their vehicles. There's something about getting farther down the road on one tank of gas that inflames the competitive spirit, almost as much as horsepower output or top speed. Of course, the vehicles with the very best range on today's market are almost all big trucks and SUVs; virtually all have the ability to carry massive reserves of fuel. Top up a standard Chevy Suburban and you can expect to travel almost 700 miles (you'll need to stop before the Suburban stops...), while a diesel-fed Jeep Grand Cherokee manages almost as many. But what about vehicles that are smaller? The EPA has, essentially, three classifications for 'small' vehicles: Minicompact, Subcompact and Compact. All three are measured based on interior volume, meaning that some cars with rather large exterior dimensions and engines slot in next to traditional small cars. But even though impressive GT coupes from Porsche, Bentley and Mercedes-Benz may have much larger gas tanks to feed their powerful engines, that capacity is offset by higher rates of consumption... in most cases. We used the EPA's Fuel Economy Guide for model year 2017 cars as a start, calculating the official highway miles per gallon rating with each vehicle's tank capacity. The resulting numbers aren't necessarily real world, but they do offer a spectrum for total theoretical range. The eventual top ten surprised me on a few occasions, and comprised quite a varied list of vehicles. 10.

Dealers, owners feel betrayed by VW scandal

Bob Rand bought his Volkswagen Passat last year for its clean emissions and high gas mileage. He liked the car so much he convinced his son and a friend to buy one, too. Now, as Volkswagen comes clean about rigging diesel emissions to pass US tests, Rand is desperately trying to sell the fully loaded model with white leather seats for $10,000 below what he paid. His sole bite has been from a man who offered $7,500 on speculation that he could resell it in Mexico. "Volkswagen was somebody that you could rely on for cutting-edge products and quality and all those things and now you find out that they're not above lying just flat out," said Rand, who plans to join a class-action lawsuit against VW. "That's probably about as bad a thing as a company can do is lie to your face when you're buying a $35,000 car." Rand's anger at the world's top-selling car company was echoed Wednesday by private dealers, auto wholesalers and owners across the US as fallout from the smog test trickery mounted. The US Environmental Protection Agency first disclosed Friday that stealth software makes VW's 2009-2015 model cars powered by 2.0-liter diesel engines run cleaner during emissions tests than in actual driving. On Wednesday, CEO Martin Winterkorn resigned and took responsibility for the "irregularities" found by US inspectors - a scandal that has wiped out billions in the company's market value and raised the possibility of criminal investigations and billions more in fines. The revelations left dealers sitting on hundreds of diesel cars they could not sell. Many also dealt with a flood of angry calls, emails and tweets from Volkswagen owners who felt betrayed because they believed they had bought a car that polluted less without sacrificing the good gas mileage and performance that comes with a diesel engine. "I think their feet should be held to the fire." - Joe DeCarolis "I think their feet should be held to the fire. I think apologies don't mean anything when something is so premeditated," said Joe DeCarolis, of Cary, NC, who owns a 2012 TDI Jetta Sport Wagon — a car he bought after careful comparison shopping for its clean emissions and good gas mileage. Dealers can't give customers good answers because Volkswagen hasn't said a whole lot, said AutoNation CEO Mike Jackson, the leader of the largest auto dealership chain in the US.