Santa Fe '07
Yes, I read my Factory manual... The transmission fluid does not need to be replaced until 110K. Should you feel like it.. at 60K you can spend the money. The factory manual states "Inspect". Same as the drive belts. The timing belt, that's a different thing.
Replace spark plugs... again.. not until 90K

I go by the factory specs... not what some dealer wants.
If you keep your car past 100K.. then that's something else.

 

Maybe for the "normal" service interval but not the "severe" service schedule. 90% of the cars on the road drive under the "severe" definition.