This. A thousand times this. They didn't write a defeat device to "fake" emissions, they wrote legitimate code aiming to make the car truly compliant with the

This. A thousand times this. They didn't write a defeat device to "fake" emissions, they wrote legitimate code aiming to make the car truly compliant with the requirements. Then someone made this code not the default and, except when the car is under testing, loaded an alternate mapping of some key parameters which is more tuned for performance and mileage, at the expense of emissions. This is the criminal part, not the first.