1999 E55 scratch cylinder sleeve
I bought a 1999 E55 with 15k miles last month. Ocassionally the engine would run rough when started in the morning, but would smooth out later. My dealer replaced the computer, but the problem continued. Reviewed records and turns out car has had this problem since new (replaced computer 3 times!). My dealer pulled the engine and discoverd scratched cylinder bore (same cylinder that would not fire). MB will repair the engine since it is under warranty, however I am concerned with what would cause this problem in the first place. Should I press for getting a new engine, if possible, or is this no big deal and an easy fix?? I don't want to end up with a mess in 12 months when the warranty expires.