2008 207 le Mans 1,6 150PS buyable?

Hi, my girlfriend found a 2008 Peugeot 207 le Mans edition with the infamous 1,6l 150ps motor. I read a lot about chain tensioner and oil leaks. Now my question is l, if the car has already 140000 km can I assume that the worst things are fixed? It is relatively cheap with 3500€.

Something els we should look for when test driving it?

Thanks in advance!