Also have a '98 ML320. Mine has 190,166 miles since new. I am the original owner. None of the work 1-4 has been done or needed.
From original post:
Lets define MAJOR repair as: 1 > transmission rebuild, 2 > rear end rebuild,
3 > differential rebuild, & 4 > engine < head job or rebuilds only >.
Ken

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2014 E250 Bluetec 4-Matic
2014 GL350 Bluetec 4-Matic
1996 Chevy Tahoe 4 x 4
2009 ML350 (sold)
2005 SLK350 (sold)
1999 E300 Turbodiesel (sold)
1998 ML320 (sold)
1991 300D 2.5 Turbodiesel (sold)