Volkswagen, parent company of Audi, has been caught cheating EPA rules by a team of researchers. The company used a "defeat device" to get around EPA emissions standards for air pollution.
"The EPA says the "defeat device" is sophisticated software on VW cars that detects when the car is going through official emissions testing. When the software recognizes an official test is underway, it turns on full emissions controls to make it appear the emission standards are within the rules. Once the official tests are completed, the emission controls are decreased during normal driving."
The affected vehicles include the 2009-2015 Audi A3 among many Volkswagens (and maybe Porsche). Much more on this soon, I'm sure.