Air conditioner quit working @ 12,000 miles - it was a faulty switch... been working great since.
Silly check engine light comes on periodically - mostly because of the gas cap, I assume.
At about 70,000 miles, I had to replace my rear wheel cylinders - as they were slowly leaking brake fluid.
Currently (96,000 miles) I am getting a full rear brake job (drums, cylinders, and shoes) - because the shop I used, replaced my leaking cylinders with RECONDITIONED ones, and they began leaking again - thus soaking my shoes with brake fluid, and also ruining my drums.
My KIA has been QUITE dependable.
I have a few complaints about small squeaks and rattles - and the service departments I've visited are typically awful.
The unlimited roadside assistance is awesome... I've used it 6 times.
If I knew then, what I know now - I would have gone with a manual transmission, as the automatic really hinders this little car's acceleration.
The interior is very comfortable, but I quickly replaced the factory sound system with my own... though I did keep the factory tweeters!
All in all - I've taken great care of this car. I've ONLY had my oil changed with FULLY synthetic oil - and that, about every 8,000-10,000 miles. I've had my tires rotated and balanced, approximately every 10000 miles. I've replaced the air filter a few times.
At 35,000 miles I had my spark plugs changed, and again at 92,000 miles.
I had my timing belt changed at *gasp* 75,000 miles (as opposed to the recommended 60000). I also had my transmission flushed at 75,000 miles.
I love this car! The only reason I would never (unless something changes) buy another Kia - is the UN-godly depreciation. I usually trade every 2-3 years, but I have not been able to trade out of this thing - as I owe so much more than it is "worth".
I am looking to replace tires in another 10,000 miles or so... (this will be the second time I've put tires on it.) I will drive it until the proverbial wheels fall off!!