No old diesel MB's have problems with timing chains snapping. As with any old car as time and miles march on they require maintaince. If you snap the original chain on a 350k mile engine, well what do you expect?

617's and early 602's for some reason seem to snap the oil pump chain once in awhile. However this is pretty rare and only seems to happen after a lot of miles like 300k+.

Usually sometime in the mid 200k range you have to roll on a T chain because of stretch. If you plan on keeping the car new tensioners and rails should be fitted.

Only Ebay MB's run for 500k with little work, it doesn't usually work that way...

Oh don't worry the little 190D 2.5's were originaly fitted with those vac pumps that self dustructed and took the engine with them. If the engine vac pump has not been updated, do so asap.

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2006 CL500
2009 C300 4matic
1969 280SE
2023 Ram 1500
2007 Tiara 3200