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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.

Major automakers urge Trump not to freeze fuel economy targets

WASHINGTON — Major automakers are telling the Trump administration they want to reach an agreement with California to avoid a legal battle over fuel efficiency standards, and they support continued increases in mileage standards through 2025. "We support standards that increase year over year that also are consistent with marketplace realities," Mitch Bainwol, chief executive of the Alliance of Automobile Manufacturers, a trade group representing major automakers, will tell a U.S. House of Representatives panel on Tuesday, according to written testimony released on Monday. The Trump administration is weighing how to revise fuel economy standards through at least the 2025 model year, and one option is to propose freezing the standards through 2026, effectively allowing automakers to delay investments in technology to cut greenhouse gas emissions from burning petroleum. The National Highway Traffic Safety Administration has not formally submitted its joint proposal with the Environmental Protection Agency to the White House Office of Management and Budget for review. Even so, last week, California and 16 other states sued to challenge the Trump administration's decision to revise U.S. vehicle rules. Auto industry executives have held meetings with the Trump administration for months and have urged the administration to try to reach a deal with California even as they support slowing the pace of reduction in carbon dioxide emissions that the Obama administration rules outlined. One automaker official said part of the message to President Donald Trump at a meeting on Friday will be to consider California like a foreign trade deal that needs to be renegotiated. Automakers want to urge him to get automakers a "better deal" — as opposed to potentially years of litigation between major states and federal regulators. On Friday, Trump is set to meet with the chief executives of General Motors, Ford, Fiat Chrysler and the top U.S. executives of at least five other major automakers, including Toyota, Volkswagen AG and Daimler AG, to talk about revisions to the vehicle rules. Senior EPA and Transportation Department officials will also attend. Environmental groups are eager to keep the rules in place, saying they will save consumers billions in fuel costs. A coalition of groups plans to stage a protest outside Ford's headquarters in Michigan.

VW recalls 1.1M Jetta, Beetle models in US, China over suspension fears

Volkswagen is recalling about 1.1 million vehicles in China and North America in a newly announced campaign affecting the rear suspensions on some models. For the US, the action covers about 442,265 vehicles, including 400,602 examples of its 2011-2013 Jetta and 41,663 units of the 2012-2013 Beetle and Beetle Convertible. According to Reuters, the recall affects a further 126,000 vehicles in Canada and about 581,090 in China, including related market-specific models like the Sagitar.
The problem can occur if the affected models have a collision to the rear or the side-rear of the vehicle. It's then possible for the trailing arms on the torsion-beam rear suspension to be damaged. If the harm isn't noticed, then the part could fracture while driving. Obviously, a broken rear suspension is going to have an adverse effect on handling.
To fix things, VW dealers will inspect the trailing arms on the models, and they will all receive a sheetmetal part that will make a distinctive sound if broken in the future. If already damaged, the entire torsion beam will be replaced. Obviously, this work will be done at no charge to owners.