For more info and related videos: https://mercedessource.com/problems/i... Interior water leaks are very common. More so on the older 108, 116, 114, 115. 123, and 126 chassis that on the 201 and 124 chassis. This is largely due to the fact that the older models used rubber seals on the rear glass and on the front windshield (except the 126). That does not mean the 201 and 124 are immune.