Doesn't pass the smell test
I believe VW did this, since they have owned up to it, but everything still bothers me.
1. Rumour says the US emissions test limit is deliberately set impossibly low, in order to keep out foreign competition, and because they don't want diesel cars in the US for some reason. I haven't driven in US for years so don't know if it is true that diesel cars practically nonexistent there.
2. Apparently known about for some time but scandal broke at the exact same time as VW opened their engines manufacture in Russia.
3. Why are we not seeing huge numbers of VWs failing their MOT if they are that dirty?