'88 300TE 275,xxx miles
I have an 1988 300TE (wife's car) with 275,000 on it. I do all my own repair and I must say it is quite an easy car to work on. The only sticky point of shade tree mechanic work would be the electronics.
Some things prone to replacement with high mileage:
Valve stem seals and leaky head gasket.
Rear suspension hydraulics.
Water pump (several!)
Those are just a few non regular maintanence items that come to mind. The bottom end of the engine is indestructible as far as I can tell !!!! Still no hint of smoke and still smooth. My mother-in-law has an '88 300E with the M103 engine also. Has 180,xxx and short of waterpump and alternator, has never had engine repair. Runs like a champ with LOTS of pick-up.
Hope this helps!
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