Ironically, my last three girlfriend's in a row have all driven Kia (two Rios and now a Forte).
In all that time, very few problems and little maintenance required. Quite boring cars to drive and look at almost across the board, but reliable, cheap "transportation appliances".
Also, as I've always done all the oil changes on the cars, I'm quite pleased with how easy they have been. Easily accessible, well-placed drain plugs and filters. It's not much, but if you do your own maintenance its a major plus.