I have owned a 2006 1.6 HDI estate for the past 3 years, now at 65k, no complaints or problems at all. Before that I had a Xantia estate for 7 years, took it up to 135k, no problems. Both serviced regularly. If you can get hold of the April 2013 issue of "Car Mechanics", this has a feature on the C5 with all its weak points.