Bought my 2000 E-320 with 150K miles on it..and it was virtually perfect in all respects.
Ran and rode great from day one.
Paid $7K "out-the-door" and Edmunds says a dealer "should" charge about $5000 for a similar car, but I have seen most, in very good condition, upwards of $9K, so I feel what I paid was a moderate "deal".
Car run very well...Zero service issues excepting a driving light wiring harness, $150 repair by MB.
When I purchased had three outstanding recalls...all fairly "cosmetic" (rubber door seal replacement, etc.) and MB dealer did without any cost.
"Problems" with paint chips, CD changer, air flow sensors, ac failures others have reported are non-existant on this car.