Ongoing vibration problem - Touran 2006 2.0 TDi

[Mccollantics]

Touran 2006 2.0i - I wonder if anyone can help. I had a VW Touran, which I sold in July; before I sold it, the Turbo went and was replaced, also had timing belt done, then the DMF went and was replaced, quite quickly after this it developed a vibration so I had 2 tyres replaced and the tracking done and still it vibrated, the garage said the passenger CV joint needed doing so I had that done. It seemed to be resolved, but the person who bought it has come back to me and said it continues to vibrate. So I paid for it to be replaced with a VW part (not aftermarket part) and the vibration hasn't gone away. I've told the lady who bought it to go and get it formally diagnosed as I'm not a mechanic. She said it vibrates from the front but can't pinpoint where just that it's from the front. Could the DMF change have caused a vibration? If not what are common structural vibration issues with a Touran? It's definitely not the engine. I've had a search through the forum and can't find anything that resembles this issue. Thanks

[Crasher]

Very difficult to diagnose without experiencing it, in what situation does it vibrate and hw is it felt, through the seat, pedals or steering wheel? Do you know if a nDMF was fitted or a solid conversion? Are you a trader or was it a private sale?