My 2012 Kia Rio automatic transmission will not change gears. What can it be?

Cost of services questions should be directed to local shops to get a "real world" estimate. RepairPal's information can offer "ranges" for many services, but your actual local research will yield you more valid information. I don't mean to be pessimistic, but when you have a lack of shifting, some pretty serious things are occurring. First, you always need to check to ensure your fluid is clean and full. If it is, it's likely a costly internal failure. A good diagnosis including that of electronic controls is in order.