Bought my E320 new in 2001. Overall, excellent ride, classy vehicle, virtually no maintenance until about 90K miles. Between 90 and my current 115K miles, I have probably put $3k into the car for repairs (cat covert, air, regular service) but nothing before that except scheduled maintenance. Some electrical problems started to show up at 110K miles so I may be looking again. Overall, I am very pleased with this car which looks great even after 9 yrs and 115k miles. Service at dealer has been good except for 45 minutes of shop time to replace a headlight bulb. Complained the next visit and they made it right. This is my second MB and I will probably buy another one.
In my year/model, I thought the leather seats were a bit stiff. Also, hood seems to be susceptible to road dings so much that I put a Colgen bra on after the first year.