I bought this used in October 2014. Only thing I have done to it is oil change, Gas to ac unit and it has been running great. Yes maintenance is higher than other cars, but other cars don't compare. Do your own research, but I used to have a 1990 420 SEL back in 1998, and it had over 100,000 miles on it. Loved it until I sold it. These cars are great, luxury wise and ride wise. Creature comforts. I can go on..I have 162,000 miles on my E-Class now.
I purchased this car from a dealer that had it sitting for 4 years. It had a few minor problems that I have repaired myself. This car is the family favorite by far, its very fun to drive. We just took a 2000 mile round trip at 75-80 MPH and got 30 MPG !!!. I have never ridden or driven a vehicle that rides or handles like this car. My wife LOVES this car. The problems we've had are minor and easily repaired by myself and the prices for parts are not any different than my Ford diesel truck or my Jeep. Just shop around, google is your friend.
I purchased a pre-owned 2003 Mercedes- Benz E320 from a collegue in April of 2005. It had 23000 miles, but it was in great shape (save a broken cupholder). In August of 2005, while stopped in traffic on the way to Cape Cod, a Chevy Blazer traveling at approximately 75 miles an hour stuck the rear of my E320. I can't really remember it, but my car flipped 5 times, landing roof down, in the middle of the interstate. I should be dead. Instead, I walked out with nothing but a couple of bruised ribs & a new outlook on life. Look at the negative reviews---all arbitrary complaints about little inconveniences. Mercedes-Benz. saved my life. The safest car on the road. BMW cannot even touch M-B safety.
Bought my 2003 E320 with 35,000 in August 2007. Also bought an extended warranty through Mercury Insurance out of Oklahoma City for up to 5 additional years or 100,000 miles for $3,000. The warranty paid off. Parkplace Motorcars in Dallas maitained it and I never had to spend any money on it for 5 years other than normal wear and tear. Its been a great car and now has 101,000 miles. Ready to put new Michelin tires now. I intend to keep it unless someone who appreciate a well maintained/documents car and offers me what I can't refuse. My wife drives it like her own baby.
I regret to say that this was the worst Mercedes I have ever owned. It seemed that something went wrong with it every other week. The digital read-outs on main display failed causing to lose the ability to use particular options, HVAC system completely failed and needed total replacement, window regulator failures, side mirror motor failures, seat heater failures, seat adjustment motor failure, trunk release failure, fluid leaks, engine mounts needed replacement (@ 60K miles!), and many more malfunctions. Despite this being Mercedes, nobody should be experiencing this many problems with a car costing this much. It is by far the worst car I have ever owned.