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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.

VW's diesel problems could end in criminal prosecution

It's not just auto industry insiders who are re-evaluating their thoughts on VW's diesel line-up following last week's bombshell accusation that the German automaker willfully installed software in almost a half-million diesel vehicles sold in the US to get around government emissions tests. Things are moving fast in what is already being called "dieselgate," but here are some of the big news items that we've learned since VW CEO Martin Winterkorn issued an apology yesterday. The biggest news is that both the US and German governments are looking into criminal prosecutions. Here, the US Justice Department has started a criminal investigation and Germany said that its Federal Motor Transport Authority will get involved. When the full history about all of this is written, two key players will be John German and Peter Mock from the International Council on Clean Transportation. They were the researchers responsible for actually calculating the emissions, and thus discovered that what was coming out of the tailpipe and what VW was telling the EPA did not match up. Once the EPA understood what was going on, it forced VW to either explain things all of its 2016 models would not receive certification. Sales of all VW diesels in the US have indeed been stopped, and the EPA says it will take a closer look at all light-duty diesel vehicles in the US. The re-engineered 2016 Volkswagen Passat is being launched in New York today. Two senior Volkswagen executives who were supposed to attend the event - Heinz-Jakob Neusser, VW's board member in charge of technical development and Herbert Diess, chairman of the VW brand's management board - have cancelled. An Audi vehicle is among the VW Group's vehicles affected by this issue, the A3 TDI. Given that VW has admitted in some fashion to installing the "defeat device" to get around the emissions tests, Audi's slogan "Truth In Engineering" now sounds less than perfect. Yes, there is already talk of class-action lawsuits. Nothing official is out yet, but expect to hear more about this in the near future.

Audi CEO says brand's EVs are almost as profitable as its other cars

After, oh, a hundred years or so of building vehicles primarily powered by internal combustion engines, automakers around the world have been and still are pumping billions of dollars into the development of electric vehicle technology. Everything from platforms and batteries to motors and the software to control it all requires untold hours of development, and that takes time and money. Fortunately, it's not going to take long for that massive investment to start paying off, at least according to Audi CEO Markus Duesmann, who told Reuters in an interview that "The point where we earn as much money with electric cars as with combustion engine cars is now, or ... next year, 2023. They are very even now, the prices." As a brand, Audi contributed more than a quarter of overall profit for the massive Volkswagen Group, which has such powerhouse brands as Volkswagen and Porsche among others. Under the Audi umbrella are Lamborghini, Bentley and Ducati, and it seems those high-end branches aren't going anywhere, at least for now. "These brands ... are very valuable very profitable brands, where we can even expand the synergy level in the future," Duesmann said in the interview. "There are no plans whatsoever to get rid of them." Despite the overall profitability of the brand, the ongoing global chip crisis is causing headaches. "We had a very strong first half in 2021. We do expect a much weaker second half," said Duesmann, who added, "We really have trouble." In fact, so serious is the trouble that the brand is forced into "a day-to-day troubleshooting process" to limit the chip-shortage damage. The good news for the automaker is that Audi has been able to boost its profit margin from 8% prior to the pandemic in 2019 to 10.7% in the first half of 2021. The bad news is that various chip shortages aren't expected to get a whole lot better over the rest of the year. Related video: