“EPA accuses Volkswagen, Audi of evading emission laws”

“EPA accuses Volkswagen, Audi of evading emission laws”
2015 
http://www.usatoday.com/story/money/cars/2015/09/18/epa-accuses-volkswagen-audi-evading-emission-laws/72400018/

“Those cars emitted nitrogen oxides, which can exacerbate respiratory conditions such as asthma, at up to 40 times the standard level, the EPA said.

Volkswagen admitted to investigators that it had installed the defeat device, the EPA said.”