These cars aren't getting any younger, a 9 year old car will not always be trouble free and sh*t happens. IF you have a cinq these are even older so have more chance of going wrong
If you think how it has spent those last 9 years being the type of car it is then you can understand it for eg it will always have lived outside in all weathers probably used for lots of short runs, driven by young drivers and ragged, lots have been "first" cars or learner cars, many will be low mileage but all that mileage done in town (so lots of use of the clutch and engine will have spent lots of time running at it's hottest), they will have been serviced on mileage every couple of years if lucky and probably outside the dealer networks.
Cento's are good cars but like all cars have known problems, if you research well and take your time to find one then there are some crackers out there that have been truely spoiled but these take more and more finding. especially with earlier Cinqs now i'd say there are more bad ones out there than good ones