I just had to recently replace the battery after 2 years. The dealer told me the stock battery only has a one year warranty. No big deal.
About six months ago (around 45-50,000 miles), my check engine light came on, so I took the car into the dealer, and they said I had a bad ignition coil. It was replaced for free under warranty, and I was back on the road within a few hours.
The brake light switch stopped working, and had to be replaced. The dealer was very nice; I bought the part from them for $8, and they installed it for free.
Have had to replace two taillight bulbs and one headlight bulb, but that is to be expected. Again, not a big deal along with other maintenance items like spark plugs and air filters.
The Accent looks small on the outside, but has a good bit of room inside. Even the back seat, once you get back in the seat, has enough room for an average size adult to stretch out. No problems with head or leg room.
The driver's seat has an armrest that I have never used, as it just seems to get in the way with my manual transmission.
The hatch is big enough to hold a decent amount of cargo, and the back seats fold down as well. I have hauled an old 32" TV around in the back with no problems.
Driving the Accent is easy and fun. The transmission shifts smoothly, and I like that it is the Euro style gears with the Reverse on the left.
AC works awesome for hot southern summers; cools down fast, and no sign of needing a recharge yet.
One of the best factory stereos I have ever heard also. You get a 6 speaker stereo with CD player and XM built in, with a nice size screen for the XM.
The car gets very good gas mileage. Having the AC on does cut the mileage down a great deal, almost to 25mpg city down from the usual 35mpg or 40+ on the highway. Just something to watch out for. Once it's not over 100 degrees outside, I won't leave it on all the time.