210 Transmission Failure
I bought my sister's 98 E320 wagon right after the transmission was replaced. The transmission failed after 75,000 miles (90% highway) and the car was about 3 years old. The transmission fluid had been changed at around 60,000 because the fluid was so dark and gunky. Mercedes would not admit a problem, but split the $6800 replacement bill 50/50. She was so disgusted, she wanted to get rid of it. I bought it and now have 92,000 miles on it with no apparent problem with the replacement. I am planning on changing the fluid at 30,000 mile intervals to try to head off any future replacement.