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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.

Recharge Wrap-up: BYD sales surge, new Mazda MX-5, plug-in VW Passat

BYD has enjoyed a tremendous leap in sales since last year, according to Want China Times. Sales from January to April were ten times that of the same period last year, with much of the credit going to government subsidies for clean cars. BYD claims, though, that battery production is limiting the number of vehicles it sells, and that by increasing that production capacity, it will see even more success. BYD's Qin plug-in hybrid, introduced in December, has already sold 4,500 units with another 8,000 orders already placed. Read more here. Mazda will reveal the fourth generation of its MX-5 roadster in September. To celebrate the car's 25th anniversary, the all-new two-seat convertible will debut during simultaneous private events in Spain, Japan and the US on September 3 and 4. Furthermore, the new Miata will be the center of a more public event in Barcelona on September 6. For fans in the US, Mazda will hold a Miatas at Mazda Raceway event from September 5 to 7. The 2016 MX-5 promises to continue to offer a lightweight, balanced design for fun and efficiency. The new Volkswagen Passat will feature a plug-in hybrid version. Volkswagen confirmed the Passat PHEV for Europe at the model's unveiling at the Volkswagen Design Centre in Potsdam, Germany. The plug-in Passat uses a 154-horsepower TSI engine and an 80-kilowatt electric motor for a total output of 208 horsepower. With a full charge, it can travel up to 31 miles on electricity alone. All versions of the eighth-generation Passat use stop-start and regenerative braking. Read more at Green Car Congress. BBC warns that the costs of charging an electric vehicle in the UK could surpass those of fueling a gasoline engine. Not so fast, says The Green Car Website. While the BBC cites charging services like Charge Master introducing fees for rapid charging making it cost about as much per mile to drive as traditional internal combustion engines. The Green Car Website points out that most people usually charge at home for much less, that paying for rapid charging is still not that expensive and that the BBC article misses the point about EVs, anyway. See the BBC article here or click here to read the rebuttal. News Source: Want China Times, Mazda, Volkswagen, BBC News, The Green Car Website via Charged, Green Car Congress Green Mazda Volkswagen Green Automakers Electric PHEV recharge wrapup qin

Weekly Recap: 2016 CTS-V gives Cadillac new momentum for the new year

It's been a rough year for Cadillac. The historic luxury carmaker been in the news for all of the wrong reasons: Declining sales, ditching its advertising agency and the relocation of its headquarters from Detroit to New York. But in late December, Cadillac reminded everyone what it does best: Build some of the rawest and most compelling luxury sedans in the world, as evidenced by the 2016 CTS-V. This monster churns out 640 horsepower from a supercharged 6.2-liter V8. Sound familiar? That's the Corvette Z06 engine, and it makes this CTS the most powerful production Cadillac ever. It also puts the sporting divisions of the Germans on notice. The new CTS-V easily overpowers the Mercedes-Benz E63 AMG S 4Matic and its 5.5-liter biturbo V8 rated at 577 hp, and the BMW M5 (with the competition pack) and its 4.4-liter twin-turbo V8 that pushes out 575 hp. The rear-wheel drive Cadillac can sprint to 60 miles per hour in 3.7 seconds, which is close to the 3.5-second time turned in by the 4Matic-driven E63 S, and a bit quicker than the 4.1 seconds posted by the M5. With Magnetic Ride Control, General Motors' stout eight-speed automatic transmission (also used in the Corvette), Brembo brakes and a carbon-fiber option package that pretty much builds your car out of carbon fiber – it's clear this Cadillac means business. Truth be told, we expected this CTS-V to deliver. It's been a serious sports sedan for a decade, and the recent generation and its 556-hp arrogance have been particularly memorable. But notice what we're doing here? We're talking about product. Not who makes Cadillac's ads, or if the brand's headquarters has a mailing address in NYC. Like the 2016 ATS-V that's due in the spring, the debut of the 2016 CTS-V (on sale in late summer) is a shot in the arm for Cadillac, and its arrival comes during time of transition. The brand is trying to reinvent itself as a modern luxury maker. It wants new customers, a different image and obviously more sales. Those things are going to take time, but with a 640-hp sledgehammer of a sports sedan on tap for next year, Cadillac can still maintain some of its swagger through all of the change. Other News And Views 1984 Audi Sport Quattro heads for the auction block If you're into '80s rally cars, you're really a car person. But if you're into that stuff – and we are – this 1984 Audi Sport Quattro is sure to get your blood flowing.