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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.

Volkswagen's new Passat Alltrack ready to scale the Alps

Volvo may be stepping up its off-roading game with a greater variety of Cross Country models tumbling out the factory in Gothenburg, but the other (larger) European automaker whose name starts with the letters V-O-L is also broadening and updating its range of road-going automobiles equipped to handle a little soft-road duty. Aside from Audi's Allroad line, Skoda's Scout models and the new Seat Leon X-Perience, the Volkswagen brand itself has recently showcased Alltrack versions of the Golf, Multivan and of course the Passat. And now it's announced a new version of the latter for the European market. Based on the Euro-spec Passat Variant, the new VW Passat Alltrack follows a familiar formula: take a station wagon, equip it with all-wheel drive, jack up the suspension, add some lower body cladding and some new trim and – voila! – you've got a pseudo rough-roader on your hands. Set to debut in just a couple of weeks from now at the 2015 Geneva Motor Show, the new Passat Alltrack is visually distinguished by its new bumpers, underbody protection, beefed-up wheel arch moldings and a ride height increased by over an inch to the benefit of ground clearance as well as approach and departure angles. European buyers who like to leave the road every once in a while (or give the impression that they do) will be able to choose from a range of five engines: two burning gasoline with either 148 horsepower or 217, and three diesels available in 148-, 187- or 237-hp states of tune. The base TSI and TDI engines are mated to a six-speed manual, while the top three are hooked up to a six-speed DCT, but they all come with 4Motion all-wheel drive as standard. All but the base TSI model boast a towing capacity of 1,800 kg, enhanced by a Trailer Assist system that automatically lines the vehicle up to a trailer. It even comes equipped with an off-road mode that incorporates Hill Start Assist and Hill Descent Assist to make any journey across the Alps a breeze. Wolfsburg / Geneva, 19 February 2015 World premiere of the new Passat Alltrack All-wheel drive all-rounder combines the best of on-road and off-road driving - Passat Alltrack: 100 per cent 4MOTION – from 150 PS to 240 PS - Superior off-road performance with off-road mode and all-wheel drive Ten important facts about the world premiere of the Passat Alltrack: 1. Permanent 4MOTION all-wheel drive as standard. 2. Distinctive off-road look with new bumpers, underbody protection, door sill and wheel arch trims. 3.

Watch VW Group Night kick off the Frankfurt festivities

The Frankfurt Motor Show is Volkswagen's home affair. As a result, the whole of the automaker group makes a big splash, even before the show doors open. We'll be live from the Frankfurt floor starting early tomorrow morning, but tonight we're posted up in the stands at the always-entertaining Volkswagen Group Night. To give you a taste of what it's like to be there, we're going to be shooting some man-on-the-scenes video as the night progresses. Below you'll find videos of all the best that VW Group brands – Audi, Lamborghini, VW, the lot – have to offer, as quick as we can upload them. So, enjoy the Short Cut Videos you see here. And stay tuned as we add more to the tally, below. And, of course, be sure to check in on Autoblog early and often tomorrow, when we bring you official debuts of new production vehicles and concept cars, a ton of new video content, live image galleries, and lots more.Seat Leon Cross Sport Bentley Bentayga Lamborghini Huracan LP 610-4 Spyder Volkswagen Multivan PanAmerican Edition Bugatti Vision Gran Turismo Concept Audi E-Tron Quattro Concept Audi A4 Ducati Monster 1200 R Volkswagen Tiguan Skoda Superb Combi Porsche 911 Carrera S Coupe and Cabrio Volkswagen Tiguan GTE Porsche Mission E Concept Volkswagen Group Night Finale Green Frankfurt Motor Show Audi Bentley Bugatti Lamborghini Volkswagen SEAT Skoda Videos Original Video Frankfurt 2015