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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.

2015 Volkswagen Golf R [w/video]

Volkswagen hired a photographer to come shoot the handful of journalists that it brought to drive the 2015 Golf R at Buttonwillow Raceway north of Los Angeles. This fact, though unremarkable in and of itself, was something I hadn't noticed until I was well into my track time – probably ten laps deep on a day that would see me run twice that number. In any event, I noticed the intrepid shooter as he was sprinting from one side of the track to the other somewhere before Turn 2, while I was barreling down the main straightaway, still looking through Turn 1. In the roughly two-mile configuration of the track that I drove, Buttonwillow is a big, wide-open circuit, largely flat and with excellent overall visibility. On that layout, and just hours into my Golf R experience, I'd already become confident in endeavoring to push the limits of VW's latest blistering hatch. In fact, the easy nature of driving the thing quickly had me overestimating my pace. So when I saw the photog sprint across the tarmac I instinctively slowed way too much, way too early for Turn 1. Looking back at the incident after I'd pitted for the session, I laughed at myself, knowing I'd have had to be driving almost double my actual speed to put the camera guy in any real danger of being hit. But the experience crystallized what my full test of the R bore out: this is a car that makes you feel much faster than you otherwise would, at least in a competition setting. The 2015 Golf R is an uber hatch that will flatter those hyper-enthusiasts passionate enough to splash out on its steep price tag, but without threatening sales of core models like the GTI and its ilk. That's a good thing for the VW fanboys, to be sure, and, I'd argue, a great thing for the strength of the German brand overall. {C} The R felt both placid and comfortable while I clicked off highway miles in search of the racetrack. My test in California had at least two things in common with the First Drive feature that Steve Ewing brought us with the Golf R in Sweden. First, we both drove European specification cars (though mine didn't suffer from the same sticker abuse that Steve's did). Second, we were both somewhat limited in terms of driving the car in varied, real-world situations. My street route consisted almost entirely of tracking California's I-5 north out of Los Angeles; which any Angelino will tell you is a less-than-riveting mode of travel.

Dyno run hints VW GTI power might be significantly underrated

Are you one of the lucky owners of the 2015 Volkswagen GTI? If yes, you should be happy, because your 210- or 220-horsepower hot hatchback might actually have more like 260 ponies under its hood. That's according to a dyno test from a vendor on, of all places, a Ford Focus ST enthusiast forum. The company is estimating a 15-percent drivetrain loss with the GTI's best result a whopping 263 horsepower and 314 pound-feet of torque at the crank. That's a tremendous difference from the 210 hp and 258 lb-ft of torque that Volkswagen claims. Of course, this is merely one dyno session on one car. We'll have to wait until more 2015 GTI owners get on the rolling road to see if Volkswagen really was as conservative about its hot hatch's output as FocusST.org claims. Featured Gallery 2015 Volkswagen GTI: First Drive View 32 Photos News Source: FocusST.orgImage Credit: Copyright 2015 AOL Volkswagen Hatchback Economy Cars Performance vw gti dyno