All I really do it town driving, sitting in traffic constantly, I just didn't know anything about them until I got my 1st really moddern car! Should have stuck to older stuff.
Or they should lable cars with dpfs as unsuitable for town drivers who sit in traffic alot

i agree, its bollocks, all you do is collect all your carbon and dump it on the motorway*, the car is no cleaner! all the royal mail postie vans were recalled and the dpf's removed and coded out...
*or not in your case, you still own all yours