I have a tier 1 warranty on my E500 C207 until the end of September this year. After a quick glance at the above i can see one difference, there could be more. They no longer cover drive shaft oil seals.
Under the cover i have, these are covered.....i know because i had one changed under warranty.
I also had the rear aircon fixed and a new oil cooler installed.
I am pretty sure this is what failed when I had tier 1 warranty and they didn’t entertain the repairs.