A lot of the reported DPF problems on the 2.2D were due to a faulty set of sensors being fitted to later cars than the one you are buying, Otherwise, as said above, a regular run at speed seems to keep the car running sweetly. So far I have had no problems with my 59 plate 2.2D TS2 which has now done just over 15k. However I think the 183 engine is a bit more delicate than my 163 as it is pushing out more power and operating nearer to its limits, I think it has a different turbo fitted too.