A local dealer has a 99 E 320 4 matic with 83k and all the toys. Autocheck one owner car. I looked at the Common Problems thread and it helped. Anything else to look for as these cars age and how is the AWD system in terms of reliability, repairs?

Also posted on here in the C Class section, another dealer has an 02 C320 wagon with the same kind of miles and equipment. Any comparisons (beyond the obvious) comments on that car versus the Eclass are appreciated.