I've read various threads on here saying that the DPF will only re-generate at a certain speed so most of the time on motorways etc.
Yesterday I had a strong fume smell enter the cockpit of the car (2009 2.0TDI 170) on 3 occasions during seperate less than 3 mile journeys so was only doing 40mph tops. I was a bit concerned.
The car was already booked into an Audi Dealership today to have some other work done so I mentioned the smell and they said it was probably the re-generation process of the DPF. I said to them that I thought it only happened at higher speeds but he said that it can happen at any time. This is an Audi Dealer so you'd hope you were getting the correct info!
Who's got some definitive answers on this subject or do I assume that Audi actually know what they are talking about?