I have a "new" '01 E. I didn't notice my problem initially, though now it is annoying me to no end! The car is very unstable at highway speeds: 65 and over, though it is not a problem that just appears but rather becomes more noticeable.

The car is overly "influenced" by minor road conditions as well as wind. I have to be such an active driver constantly making course corrections as well as getting myself back in my lane and that is no exageration. When I bought the car we had a wind storm and I had to drive mid way in the median when passing to keep the car from slamming into traffic. I was furious and some what scared. And now I am just angry. The worst car bar none I have ever owned and it has only been a month. I know I should have noticed this in the test drive, but I didn't.

Took the car to an independent shop they checked it out thoroughly and said on one hand they noticed it in the test drive though everything was fine with steering, suspension and tire alignment and balance. They, all bmw/porsche drivers, chalked it up to mushy mercedes suspension.

I feel like there is too much power in the power steering giving an abnormally low amount (even for mercedes) of road feed back combined with a mushy mercedes suspension.

The shop is basically not willing to look anymore. I like the car, looks, ride around town. but I am going to have to get rid of it if I can't do something fast to make this car more stable on the highway. My first thought was sport suspension but the guys at the shop seemed to think that could make the "problem that doesn't exist" worse, whatever that means. Any suggestions?

Also is it possible to disconnect the power steering and drive the car without doing damage just to see it that is the problem?