Hello there,
i've had my Terzo for just over 6 years. Its pretty much the exact same as most uk MY97 cars, so 2 be honest their pretty good. In the 6 years i've had my car i've only had to replace the clutch around 65k which cost £500 and shortly after that i had to get the synchro in 2nd rebuilt in the gear box along with the bearings replaced. This also came to around £500.
Apart from other general wear and tear items thats been it for 6 years worth of motoring, so can't be that bad!
Suppose it depend on how the car has been treated as they are getting on in age now