Loved my car in the beginning....

Never been hugely impressed with the fuel economy but it is a 2.4 litre engine so I accepted it would never be as good as my old 1.9 TDI.

Consistently got low 40s during the summer and the previous year I'd had it until then, but the last few months I am getting 36 mpg... I drive like Miss Daisy. 70mph on the motorway with cruise control on, all week. 27 miles to work and 27 miles back, almost all motorway...... Bloomin thing is costing me a fortune.

Recent things to note, may or may not be coincidental.

Sitting at traffic lights or a junction for a little while idling..... Set off, big plumes of grey/white smoke that stinks...... Doesn't happen all the time.

No smoke under normal driving or acceleration. Car goes like a train.

After coasting (over run) and then accelerating, blue smoke........ (oil burning).

Hellish vibrations 50/60/70 under acceleration, believed it was a drive shaft on the nearside. Problems seem to have started when I replaced inner CV boot. Replaced original drive shaft with a second had one. Exactly the same problem remains..... I wonder if its the "cap" that the trio bearing driveshaft slots into. Going to change it, when I get a chance. No play in any track robs etc.

Got a leak off test kit to see if the injectors are playing up, and may be over fueling and causing the high mpg and/or grey white smoke........

Codes have been read in a proper VIDA and DPF regen'd even though it was reading very low anyway. Still no difference.......

Loosing the will.

Help....