None!!
10,000 miles and 14 months later and still going strong. I have to say for the price of just $21,000 I have been driving my EX and nothing has gone wrong, Nothing! I change the oil every 3,000 miles and complete the maintenance required by Kia, and that's it. I will be buying another Kia real soon, maybe the new 2004 1/2 Kia Spectra. I just don't believe in paying more for a car with less options. I know people are wary of the name, but it's only a matter of time...
There are two flaws with Spectra (I have one):
1- The sound of the engine is louder than other vehicles.
2- It is not as smooth as other similar class cars like Lancer and Corolla.