I have one word for you "Spheres"
I had one of these and whilst it was the most comfortable car I have ever driven its suspension is a bag of poo when it goes wrong. Think of RR airbags and your on the right track.
Still a bargain though.
tis the green bally thing below - Bentley also use them, and they fail quite often as they over run them, standard Bentley price is circa £1300, exact same component (even has Citreon stamped on it) from Citroen is about a tenth of that