I am going ot be purchasing a 1997-1999 Mercedes E class in the next couple months. I consider myself fairly good at judging used cars based on test drives, records and basic mechanical condition. My question is this:

What are the common problems associated with these cars that I should look out for? I am considering cars with up to 80k miles.

Is there a source on the web for buying tips for these cars?

My last benz was a 1986 420SEL. It was a great car but became plagued with leaking seals, nothing major but it eventually influenced my decision to sell the car.

Thanks in advance for any advice!