What are the common issues with the transmission of the Ford S-Max?

I recently bought a used Ford S-Max and have noticed some issues with the transmission. It's not shifting smoothly and sometimes makes a loud clunking noise. Are these common problems with this model? Is there anything I can do to prevent further damage?

One common issue with the transmission of the Ford S-Max is a faulty solenoid which can cause shifting problems. It's important to have it checked and replaced if necessary.

Another possibility is that the transmission fluid may need to be changed. Old fluid can cause issues with shifting. It's a good idea to have it checked and changed regularly.