I have 1999 e320 with 33K miles and freshly out of warranty. I was working in the yard when I heard this loud noise from a car driving up the block. I t was my wife with the radio blasting and no clue what was going on. Towed the car to the dealer (first time at this dealer) yesterday and today I found out that it needs a new timing chain/cover and oil pan. But I guess I am lucky since the dealer told me that MB agreed to pay the entire bill.