Intersting. We had our 2009 touareg 3.0 tdi back at the dealer for a check engine light 24 hours after purchase at the end of October. They found a DTC P310E. Ultimately they replaced EGR cooler 2 and a number of gaskets and seal rings under extended emissions warranty. It is about a month later and I am noticing the diesel exhaust fume smell in the cabin, particularly when idling at traffic lights. It may have been there earlier, it`s the wifes car and i do not drive it much. It seems like it is possible the leak may have been introduced during the repair. Either way I think it needs to go back, the smell is pretty nauseating.