I faced a similar problem, a neighbor of mine would come out and say that my 95 E300D sounds like a truck - umm what????

you dont hear the 5.9 diesel your other neighbor has - or are you deaf in that ear?

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)