Actually, nothing. The tires were showing wear and need replacing within 7500. The numerous speed bumps I go over at work have taken a toll on the ball joints, but not to the fact they yet need to be replaced under warranty.
A great solid commuter cat. I broke in the engine correctly and I get 36.5 to 37.5 miles to the gallon averaged out between city and highway driving. I don't baby this car at all. They did a splendid job of mating the engine to the transmission and the drive train. Handling is not there, but the other items are. The interior is much better than I would have thought. Gold stars.
You can increase your handling characteristics (and the smile on your face) if you change the rear sway bar. I did- wow- what a difference! It is what you would expect from a car that has a 'GT' badge on it. You can get more details & tips at the websie below, from the elantra club website. Happy cornering!
http://www.dfwhyundais.com/diy/DIY-SwayBar.html#Top.