Tue Sep 29 12:21:29 EEST 2015

Cheating about pollution appears to be common practice, not only Volkswagen did it

From wikipedia
In 1973, Chrysler, Ford Motor Company, General Motors, Toyota, and Volkswagen had to remove ambient temperature switches which affected emissions, though the companies denied intentional cheating and said that strategies like enriching fuel mixture during cold engine warm-up periods could reduce overall pollution.
In 1996 General Motors had to pay a near-record fine of $11 million, and had to recall almost as many cars as Volkswagen's US TDI diesels, 470,000, when they, like Volkswagen, programmed ECU software to disengage emissions controls during conditions known to exist when the cars were not being lab tested by the EPA.
There are more cases linked.

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