I have owned my E320 since new--10+ years. In that period of time, I have spent an average $422 a month on routine service and an average of $534 per month on repairs. Repairs like 3 window regulators; rear differential seals (recall item); CD player went south after 5 years; leaky transmission plug replaced twice; right and left 02 sensors; vibration damper recall; airflow sensor; broken front coil spring; crankshaft sensor; entire rear tail lamp assembly. I have 120,000 miles on it. Granted a few but I don't expect repairs like from MB. I have owned a number of other autos and have not replaced anything like the things I replaced/repaired on this auto.
Beautiful car. Fantastic paint job. Drives very nice.