I bought my Rio in August and the ISG has already stopped working. Actually it probably stopped working in Dec. or Jan. since it took me a little while to notice since I'm still not used to the feature! We do not have a Kia dealership super close to us anymore, but I plan to take it in soon while it's still under warranty. Anyone else experience similar issues? I'm actually very happy with the car so far, but disappointed that this feature has already malfunctioned. I'm just hoping there is not a bigger issue at play here and that the ISG can be easily repaired. I do admit that I was skeptical about the longevity of the ISG when I bought the car since it's so unusual to hear your car turning off/on all the time. I certainly didn't expect it to malfunction so soon, though!