The car is very noisy at highway speeds. Is that normal?

Good day, It is most likely a wheel bearing going bad or the tires may be scalloped (have a wavy edge) which will give you quite a bid of noise as well. I would recommend you bring it to a reputable shop in your area for analysis. Hope this helps! John J Bryant Owner: Sonrise Automotive

I have a 2001 E430 4Matic and it is noisy also. Dealer even replaced the trasfer case a few years ago under warranty and it still makes noises between 55 and 65 MPH. I think it is just a characteristic of the vehicle. Good tires will make a difference but I just use Falkens because the vehicle eats tires every 20K or so miles.