11/1/2015: VW Recall Legal News for Tampa 813-518-1381

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As most  every VW owner knows by now, the emissions scandal affects these vehicles:

  • Volkswagen Jetta, Jetta SportWagen (2009-2015)
  • Volkswagen Beetle, Beetle Convertible (2012-2015)
  • Audi A3 (2010-2015)
  • Volkswagen Golf (2010-2015)
  • Volkswagen Passat (2012-2015)
  • Volkswagen Golf SportWagen (2015)

What is known:

In response to the scandal, CR tested the 2015 and 2011 Volkswagen TDI diesel vehicles in this “cheat” mode to assess fuel economy and performance.

For 2011 models, there is a concern. CR testing also showed reduced acceleration with the 2011 model, which is equipped with a lower-tech diesel filtration system.

One key factor in the emissions scandal is that the vehicles in question operate in two different modes: “on road” and “dyno.” But merely having two different modes isn’t a problem; many cars offer driver-selectable modes to enhance fuel efficiency or performance.

The 482,000 Volkswagen and Audi diesel vehicles in question in the U.s. use an Engine Control Unit, or ECU, designed by Robert Bosch GmbH, a German multinational engineering and electronics company. In addition to the ECU, Bosch supplies other key components, such as the computers that control the braking and electronic stability control systems. This is where the dyno mode—also referred to as a test mode—comes into play.

Emissions system and fuel economy testing is conducted while a vehicle is placed on a dynamometer—think of it as a two big rollers or a treadmill—rather than driving on the road. The vehicle has only its driving wheels rolling (the front ones, in the case of VW vehicles). But the rear tires are stationary.

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