Leaderboard

Look at the VIN. If it contains the sequence RHY, it's a 90BHP. If the sequence is RHX, then it's a 110HP. The 110 engine is fitted with an intercooler, the 90 isn't. The power difference between the two is very noticeable. FSH is most important (IMHO) but not necessarily from a main dealer. I've recently sold a 2002 Xsara and a 2005 C5 both with a full service history, and yet they have rarely been near a garage since they were new.

Welcome to the forum. I would not worry about the 2 extra spheres underneath. On the 2001 to 2004 model 2.0 hdi there are 2 power options - 90 and 110 bhp but for such a heavy car you would want the 110 bhp. The 110 bhp has the best fuel economy so I do not understand why the 90 bhp was made. Ideally you should look at both cars if you have the choice. If you are going to use the car for towing a caravan the 2.2 hdi is heavier - estate kerb weight not inc 75 kg for driver - 90/110 bhp 2.0 hdi 1423 / 1438 kg - 2.2 hdi 136 bhp 1518 kg. The exclusive will have extra things such as rear parking sensors and esp which may make it a better car but being the 2.2 hdi it will use a bit more fuel 45 vs 50 mpg with higher car tax (CO2 - 90 /110 bhp 155/149 - 2.2 hdi 169 g/km giving £180 / 145 / 205) and it also has an exhaust particulate filter which needs servicing at about 70k miles costing a few £100 (dpf replacement/cleaning and eolys fluid topping up plus ecu reset). It is also possible the sx may not have air con. On the C5 Technical Section there is a pinned post of Common Problems to be aware of but you should ensure everything works and there are no leaks on the suspension.