Unless you have inside knowledge of the project, it is very difficult to determine who actually wrote the code. In a typical modern car, there are probably mor

Unless you have inside knowledge of the project, it is very difficult to determine who actually wrote the code. In a typical modern car, there are probably more than 30 different companies providing software components into the car. Sometimes, in a single black box with complicated fucntions, there could be 5 software companies contributing. So it is unsurprising of confusing story that Audi has been put foward as the source of the "dieselgate" software whereas before Bosch was the source.