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New info on how VW, Porsche, Audi V6 TDI engine cheat works

The German newspaper Bild am Sonntag is reporting that US investigators have found three pieces of software that work in concert to turn off the emissions control equipment in certain diesel models after a set period of time. The engine in question, the 3.0-liter TDI turbodiesel, was found in certain Volkswagen Touareg, Audi Q7, and Porsche Cayenne models – the sale of which was suspended in the US late last year. Since most emissions compliance testing takes around 20 minutes, the software in the three VW Group models shuts off the emissions control equipment after 22 minutes, a straightforward end run around the testing. Remember that the 3.0-liter TDI engines aren't included in the big buyback and recall program announced for the smaller 2.0-liter, four-cylinder TDI engines. The 3.0-liter engines will likely get their own program, but we don't know when to expect it or exactly what it will look like. Last month, California rejected a proposed fix for the larger TDI engines, and VW went back to the drawing board. Since the company is unlikely to create two fixes, one for California and one for the rest of the nation, the company can't really proceed until they figure out a solution California will accept. The EPA hasn't officially commented on the report, and we don't know how Bild am Sonntag came across the information, but we'll be closely watching what emerges after this report. Related Video:

2015 Volkswagen GTI: Driving into spring with just one regret [w/video]

If you only notice one thing in the video above, it should be this: that GTI is filthy. Yes, the grossness of winter took its toll on our long-term 2015 Volkswagen GTI, covering the Carbon Steel hatch in a mess of salt-and-slush-streaked grime. The GTI was a champ during the cold months With 225/40R18 Bridgestone Blizzak winter tires offering sure-footed grip, the hatch became a dear companion to editors slogging through unsavory weather. Front-wheel-drive cars are already pretty solid for wintertime driving, and with the added traction of these tires, the GTI plowed forward without any drama. Our biggest gripe about snowy driving involved the car's Driver Assistance Package – a $695 option that, knowing what we know now, we wouldn't have ordered. First, this option positions the front camera right in the middle of the lower grille, which looks pretty terrible. But more importantly, the system can't tell the difference between slush/snow and an actual obstacle, so it constantly feels the need to warn us that we might hit something when the camera is covered in grime. Clearing the camera off isn't a problem, but the practice grew more annoying as the season continued. The Driver Assistance Package gets you front and rear parking sensors that, honestly, we find to be a bit too sensitive. It's activated in any low-speed situation, so the car freaks out whenever you take it through a car wash, and beeps if you walk up to the rear (to, say, open the hatch) while the engine is running. And because the GTI S model doesn't get you a rear-view camera, there's no real added benefit to the noise-makers. Yes, they help while parking in tight places, but if you struggle to park a vehicle the size of a Golf with its already excellent sight lines, you've got larger problems to overcome. We have other issues with the system, too – like how the forward sensors will blink in the instrument panel to tell you you're too close to the vehicle in front of you on the road, even with a four-car-length separation between vehicles. In all, these issues just don't seem to outweigh the benefits of the safety system. To us, it's not $695 well spent. But enough complaining. Really, the Driver Assistance Package has been the only issue we've had with the GTI since its arrival in January. Now that winter has finally melted away, we've enjoyed nice, warm temperatures here in Detroit – just last week, we were took the winter tires off.

Volkswagen plans expansion, tech center in Chattanooga

Volkswagen is expanding its growing Chattanooga, TN, factory by even more than the original plans after winning the local government's approval. The German automaker announced its intention last year to invest $900 million to add 538,000 square feet of floor space to the plant, which would add 2,000 new jobs. The company just went back to the city for permission to increase the expansion by a further 130,153 square feet for an even larger body shop. The extra construction is estimated to cost around $18 million. VW spokesperson Catharina Mette described the decision as "a cost-saving option," to Autoblog. "Taking this action now saves money while giving us flexibility as we integrate the MQB platform in the future," she said. By the end of 2016, the Chattanooga plant will begin production of VW's forthcoming crossover, which should look similar to the Cross Coupe GTE concept. VW has further plans for the research, development, and planning center near the factory. According to the Chattanooga Times Free Press, some of the designers and engineers will start work at a temporary facility there next week. A permanent location will open in 2017 with a test track and space to perform crash evaluations. The engineering center is meant to speed up the rate of vehicle development to bring models to the North American market more quickly."This will be the central entity in all the US, and hopefully all of North America," Matthias Erb, who oversees the center, said to the newspaper. Related Video: