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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.

To solve diesel problem, VW might need two fixes

Volkswagen says that a fix is on the way for its 11 million vehicles around the globe that are equipped with diesel engine software that can evade emissions tests. The problem might be far more complicated than simply creating a single solution for all of them, though. According to Automotive News citing Reuters, two remedies to cover different NOx-reducing systems could be necessary, and both potentially affect performance. Earlier examples of the EA 189 diesel engine used a lean NOx trap to reduce the harmful material coming from the tailpipe. According to experts in the Automotive News report, a software update might allow the engines to achieve compliance, but that could affect fuel economy. VW already tried this route once before the scandal came to light, but tests by the California Air Resources Board still showed the figures were too high. Later, some of the 2.0 TDI engines began using Selective Catalytic Reduction that reduced NOx by injecting a urea solution into the exhaust stream. According to Automotive News, a software update for this equipment might increase the amount of the substance used. Not only would that mean topping up the fluid more often, but there still could be some reduction in fuel economy. But, since the 2-liter, 4-cylinder TDI engine that sits inside the diesel vehicles first mentioned as being affected by the issue in the US don't have a urea treatment system, VW would need to install them into these cars. VW still hasn't officially outlined its solution (or solutions) to the emissions issue but is expected to soon. The automaker's long-term evasion of regulations with these diesel engines pumped vast quantities of additional NOx into the air. The substance is known to be linked with smog and acid rain. The US Department of Justice is already beginning an investigation into the company, and politicians are pushing for harsh punishments.

Rimac is reportedly close to buying Bugatti from the Volkswagen Group

Croatia-based Rimac is finalizing a deal to purchase Bugatti from the Volkswagen Group, according to an unverified report. If the rumor is accurate, the sale would propel Rimac to the top of the automotive industry, guarantee that Bugatti's future is electric, and mark the beginning of Volkswagen's efforts to divest its empire. Executives in Wolfsburg gave the deal the green light in September 2020, according to anonymous sources who spoke to British magazine Car, but the company's supervisory board hasn't approved it yet. Selling the French company isn't as simple as sending company founder Mate Rimac an email with an account number. Insiders explained Volkswagen would likely trade Bugatti and all of its assets for a significant stake in Rimac that would be transferred directly to Porsche, which already owns 15.5% of the brand. Officials hope to increase that figure to about 49%, meaning Bugatti is theoretically worth about 33.5% of Rimac, which was founded in 2009. Bugatti told Autoblog it can't comment on speculation. Mate Rimac gave us a similar answer. Rumors of a Bugatti sale have hovered around the automotive industry for several years, and they've never materialized. In theory, spinning off the brand would be relatively easy because it's not as deeply integrated into the Volkswagen Group as its sister companies. It doesn't share its W16 engine with another carmaker, for example. And yet, Car speculates Lamborghini, SEAT, ItalDesign, Bentley, and Ducati will also be sold in the coming years, leaving Volkswagen with its namesake division, Skoda, Audi, Porsche, Scania, and MAN. Volkswagen is having an estate sale to fund the development of electric, autonomous, and digital technologies. Its downsizing will send ripples through the auto industry. Porsche could move upmarket if it doesn't have to worry about stepping on Lamborghini's toes, for example. Spinoffs are always risky, so some companies may not survive if they're not bolstered by economies of scale. As of writing, there's no word on who will pick up the brands being divested under this scenario. And, keep in mind none of this is official. Volkswagen hasn't commented on the report. We'll update this developing story as more information becomes available.