Well, I put over 100,000 hard miles on mine, had it for 10 years and never had a problem. I know several others who would say the same.
On the other hand, I did know a few 944 owners. They seem to have problems with the rear brake springs breaking on them. That could have been an issue with a particular year model too. I do not recal the year models those guys had. They were not part of the club, just some regular guys I used to work with.
Oh, when I say I did not have a problem. I mean, other than regular maintenance (oil, plugs, brakes), there were no issues with my ZX. I busted over 190 in it after it rolled over 100,000 miles and it still never burned a drop of oil. The interor of the car looked brand new when I sold it.
You do have to pay attention more to the ZX than other cars, simply because of the turbos. Driven right and taken care of it is a good car. Mine was a 91 (the new style) model TT.
Oh Sparks, I did forget to say: On the spark plugs. Do not attempt to change them yourself, and only allow an authorized Nissan dealer do it. The plugs each have a separate coil attached directly to the plug. The harness for the coils is very stiff and can be cracked, which will cause all sorts of voltage leaks.