MIAMI, FLORIDA -- Sorry, but seems to me all these people complaining so much work for the competition. If you don't give the right maintenance to "any" vehicle, it will fall apart before your eyes; regardless of maker and model. I believe Kia or any car maker has the right to refuse warranty repairs if the owner did not maintain the vehicle properly. Some people pretend cars to last forever without doing anything to them. It's also true some cars are "lemons" but almost every state has lemon laws to protect the consumers.
My experience with Kia has being great. I own a 2004 Spectra. Never a problem; only the normal maintenance (I keep all records) and the transmission flush was done at the dealer as well the oil changes (to protect myself for issues in case of a warranty claim with the engine). Last week my AC stop blowing cold air and the problem was the AC blower fan.
The part was not available but was ordered and arrived next day via UPS from the main Kia parts depot in California (this, by the way, may happen with any car maker). It was replaced next day while I wait at the dealer lounge area sipping coffee and watching the morning news. After three years of extensive AC use in the south Florida sweltering heat, I certainly don't blame Kia for the part to fail... If this car last me 5 to six years without major problems I think Kia has won a loyal customer..