Nothing.
Loved this car, most reliable and easy to drive car. Never had a stitch of a problem with it.
The only trouble I had was that the radio went out (no biggy) and my fiance destroyed it, so I had to get rid of it. I truely think I should have gotten rid of her (destruction was intentional).
The 323 is a jewel that delivers a lot (fun, reliability, economy) and asks for very little. You are right about getting rid of your fiance.