The Duel Mass Fly wheel and Clutch
IS a weak point on the TDCI's.
Regardless how you drive a clutch is still going to wear out eventually and this is where the problems start.
When the clutch starts to slip (even a little) it slowly fooks up the DMF and all the fly wheel filings fook up the starter and might need replacing or if you can, just a clean up.
If you go here >
http://www.fordmondeo.org/forum/show...hp?tid/762392/
Theres a bit there on it,plus my little bit where you can get all the parts for less than £370.
If you go here >
http://www.fordmondeo.org/forum/show...hp?tid/724263/
this is where the buying advice is for the Mk3 Mondeo diesel (upto 2007)
The injectors might need re-coding as well as sometimes they
forget 
but this is normally on higher milage cars,but can happen on the lower milage cars aswell.
If you do go for the 115bhp i would get it chipped for the £300 odd pounds that it costs, up to 145bhp and Stu @MSD does it.
Havent had mine done yet, but its supposed to transform the car totaly.
Hope this helps Shings.