I didn't have a 159, we had/have a GT Coupe which is essentially just a three door version of the 159, sold it on eBay yesterday after only a day of being listed;
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&rd=1&item=371104333979
Great cars in my opinion, and a great option over the usual mondeo's, 320d etc etc
We had nothing go wrong with ours that wasn't usual wear and tear etc etc.