Hi All,
Apologies because I didn't have time to read all posts.
Recently had similar problems with my 07 220d (loss of power, like having two Robbie Coltranes in the trunk all the time). It turned out to be EGR, but while investigating the DPF came under scrutiny. I have a good local mechanic (Somerset) who has diagnostic equipment and software. To cut the long story short: we went on about 30 min ride with his laptop connected to the car computer. As I understand, there are two settings for regenerating DPF: 1. motorway, 2. normal roads. BOTH need to be completed and this is what, according to the computer, happened in the 30 min dirve.
As I said, my problem was EGR, so I don't see any difference after apparently cleaning the DPF, but it looks like it should be doable.
Again, sorry if someone has already clarified this.
Drive safely,
Em