Hey Guys, are any of you familiar with the above mentioned car? I have a friend that just picked one up that is in excellent shape for $4,000. She found the original window sticker and it was $42,000 plus when new. She's just wondering if anyone knows about the reliability of these cars and I know very little. From what I've read, the E320 has a good reputation for being dependable, with regular maintenance, of course. This car has 197,000 miles on it, but you'd never know from looking at it inside or outside. Original owner took excellent care of it, so it appears. She's been told that it should only have premium unleaded gas run in it and asked me if that is true. I don't really know. She also is curious if she can purchase fuel from a local station that advertises "no ethanol" and run regular unleaded. Again, I told her I don't have a clue. All I could suggest is that she try about a half tank and see how the car performs and check her mileage. What say you guys that know Mercedes?