My wife has driven both her Hyundai Accent (2012), and her Kia Forte (2011) for 300k miles. Technically I think they're the exact same car. Transmissions have never given us a problem, but we change the fluid in them religiously at 50k miles; and oil every 10k.
Occasionally we'll have to change a battery, alternator, or coil-pack, but other than that they've been great.