Hi Brett, and welcome to the club.
I think that you will find that out of the 130,000 or so S Type owners 90% never mention that they have had no problems at all. Having problems and looking for assistance is another matter.
I bought my s type SE 2.7D on an 07 plate almost exactly 3 years ago, with 48k on the clock and two previous owners. I have had a couple of minor issues which took minutes to rectify, and one small water leak which will be rectified tomorrow. Otherwise no problems whatsoever.
The last s types were made at the end of 2007 and you will be buying a car that is at least 9 years old. Obviously there will be some issues -- there are some with brand new cars -- but the 2.7 Diesel Gemini engine is a superb piece of engineering and is the result of a collaboration between Ford and Peugeot. The ZF gearbox is one of the most used automatic gearboxes, and is currently the favoured gearbox is most top car models.
If you find a car that has a good service history and has been well looked after you will be rather pleased.
X Type owners will also assist you. I used to own a 2.5 petrol X type and found it a great car and I would probably still have it if it had not been taken away by a local gang [3 in number] whose made a living from carjacking and who received an 8 year holiday in one of Her Majesty's Hotels.
Regards,
Peter.