I bought my 2007 st tdci 2 years ago with 47k on the clock its now done 71k
been a great car and I wouldn't hesistate in recomending them
parts ive replace in my ownership are
EGR valve
disks pads all round
rear tyres
front tyres 3 times!!
handbrake cables
both front wheel bearings
one rear wheel bearing
fuel filter after it caused it to go into limp mode (change every 10 k is a good lesson)

steve