I bought mine with 110000 miles on it but it had had only 1 owner which was a company car and had full Ford history. I had no receipts with it though.
I had some starting issues after a few months and it all seemed to point to the DMF so I changed it. When I got the old one out I found it had already been changed and it wasn't the issue
After some head scratching it turned out it was a temperature sensor issue and an update was available from Ford and this fixed it.
I also had issues with my radiator fan. The facelift fan variant is only available as a whole unit with control box which is stupid money. I turned to Google and found it is possible to wire in the pre facelift version and it worked a treat and cost pennies.
I picked up a full leather interior with wiring loom and switches for £35, these were from a pre facelift so required a little soldering but now works a treat. I got £15 for my old seats too.
I have now blanked my EGR and I no longer see plumes of black smoke out of my rear view mirror.
Stereos can be a bit of a pig to change. I swopped my factory fitted savnav unit for a Pioneer double din unit and it was a massive job that required the cutting of dash brackets etc.
Great car though and I get a real 48mpg with motorway driving and 40mpg around town