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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 Sport Coupe Concept GTE 'marks beginning of a new design era' [w/video]

You didn't think that Volkswagen was going to come to Geneva armed only with a bunch of European-market minivans and wagons, did you? Of course not. Last week VW gave us our first glimpse at a new show car for the Swiss auto expo, and here it is in full: the Volkswagen Sport Coupe Concept GTE. Set to be unveiled at the Geneva Motor Show this week, the Sport Coupe is envisioned as a successor to the current CC, but beyond previewing a specific model, this concept showcases a new design language that's set to characterize all new VWs to come. And judging by how good it looks from the images in the slideshow above, that could prove to be a very good thing indeed. The concept strikes us as the sleekest iteration yet of the company's flexible MQB architecture that already underpins vehicles as small as the Golf and as large as the new Skoda Superb. It's larger than the current CC in every dimension but height, and pushes the wheels further out on a longer wheelbase. And with a liftgate at the back instead of a trunk, it strikes a form more similar to the Audi A7 than the Passat-based CC. As with recent past concepts, VW has taken the opportunity to showcase its hybrid powertrain technologies, fitting the Sport Coupe with a plug-in hybrid system that couples a 3.0-liter turbocharged V6 to a pair of electric motors and a six-speed dual-clutch transmission. The internal combustion engine drives 295 horsepower and 369 pound-feet of torque to the front wheels, while an electric motor integrated into the gearbox contributes another 54 hp and a second one kicks in 114 hp at the rear. Juiced by a lithium-ion battery housed in the center tunnel and offering all-wheel traction, the combined output of 374 hp is said to be capable of propelling the concept to 62 miles per hour in five seconds flat and on to a top speed of 155 mph. It can travel for 32 miles on electric power alone and on to an overall range of 745 miles, netting the equivalent of 118 miles per gallon on the European cycle. Inside, the four-seat cabin is laden with digital displays: there's a 12.3-inch unit – dominated by the speedo and power meter – in place of a conventional instrument cluster. The center stack incorporates a 10.1-inch infotainment display, and the rear-seat passengers have access to another 12.3-inch display at the back of the center console and another pair of 10.1-inch displays in the seatbacks.

VW offers to buy back new diesels if bans introduced

By Maria Sheahan FRANKFURT, Germany — Volkswagen will buy back new diesel cars if German cities ban them, it said on Thursday, seeking to reassure potential buyers and stem a plunge in sales of diesel vehicles. Europe's biggest automaker also said it would extend incentives for buyers of new diesel cars. The moves come after a German court ruled last month that cities in the country could ban the most polluting diesel vehicles from their streets. Many German cities exceed European Union limits on atmospheric nitrogen oxide, known to cause respiratory diseases. Fears of bans have led to a plunge in demand for diesel vehicles, which are also key to carmakers' attempts to meet new EU rules on carbon dioxide (CO2) emissions. While diesel cars are heavily criticized for emitting nitrogen oxide, they spew out less CO2 than gasoline equivalents. Diesel car sales plunged 19 percent in Germany last month. At its core VW brand, Volkswagen said its buyback offer applied to new diesels bought between April 1 and the end of 2018 and would kick in if the city in which the buyer lived or worked banned diesels within three years of the purchase. It said its dealerships would buy back diesel vehicles affected by bans at their current value if their owners at the same time bought a new vehicle that was not affected by cities' driving restrictions. At Czech brand Skoda, the guarantee applies to cars bought between April 1 and the end of June, but will cover bans introduced within four years of the purchase date. At premium brand Audi, the offer only covers leased vehicles. Volkswagen also said it was extending to the end of June incentives for customers trading in older diesels for new ones. Fellow German carmaker BMW said earlier this month it would offer to take back leased vehicles if diesels were banned within 100 kilometers (62 miles) of the operator's home or place of work. There has been a global backlash against diesel-engine cars since Volkswagen admitted in 2015 to cheating U.S. exhaust tests. But Germany's government is seeking to avoid widespread bans on heavily polluting diesel vehicles, which companies say could cut the resale value of up to 15 million vehicles in Europe's biggest car market. In Germany, where motorists expect to drive powerful cars on motorways with no speed limits, any restrictions will be unpopular.