What are some common issues with Kia Ceed's automatic transmission?

I have been experiencing some problems with my Kia Ceed's automatic transmission. It seems to be slipping gears and not transitioning smoothly. What could be causing this issue and how can I address it?

It is possible that your transmission fluid is low or contaminated. Check the fluid levels and if it is low, top it up. If it is contaminated, it may need to be flushed and replaced.

Another possibility is that the transmission solenoids may be faulty. These solenoids control the flow of transmission fluid and can cause issues when they malfunction. It is best to have a professional diagnose and replace any faulty solenoids.

The transmission filter may also be clogged, which can cause similar issues. It is recommended to have the filter replaced every 30,000 miles to prevent this kind of problem.