'Cheat Mode' In VW Diesels: Tests Show It Boosts Performance, MPG

[NewsBot]

The so-called defeat device (otherwise called a 'cheat mode') that’s in up to 482,000 U.S. VW and Audi vehicles, and up to 11 million vehicles worldwide, helps circumvent emissions rules by running in a cleaner mode during an official emissions test, then emitting up to 40 times the legal limit of some pollutants—specifically oxides of...

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