I've not been doing many long journeys lately and on at least 3 occasions it had decided to start regen right near the end of my journeys - and each time it was when I had an appointment or was meeting someone, so I didn't have the luxury of driving it around for another 20 mins, so I had to switch off before it had completed - not a good thing.
A few times when I had reasonable length journeys I tried to coax it in to doing a regen by driving it quite hard once engine was warm, but it wouldn't play ball and I decided to wait until I got my **-COM and manually regen it.
However, tonight coming back from church, I spotted a volvo being driven rather enthusiastically approaching behind. Once it came alongside I saw it wasn't a , and this was a nice stretch of NSL dual carriageway with several roundabouts, so I decided to have some fun... Volvo was able to keep pace with me on the straights, but the driver wasn't as confident (or perhaps as wreckless ) as me on the roundabouts so I eventually got a little way ahead.
Now that my ego was satisfied and I went back to driving sensibly, I noticed it was only doing about 20-25mpg on the instantaneous readout, so I knew it was doing a regen. Thankfully I was able to continue driving along the dual carriageway at 70 in 4th gear to get a thorough clean. Once the MPG improved I turned around and went home.
I'll sleep better tonight knowing that my DPF has been cleaned properly. I was starting to get paranoid about it...