Purchased my 2017 GLE 350 12/29/16. Noticed engine/transmission noise at low RPM's when going throw D1,D2,D3...etc. I looked at the tail pipes under the car and you can clearly see that the tail pipes do not extend far enough to permit the noise to out the openings in the back fender. When in the cabin you can hear the engine noise and the sound of the transmission humming and shifting. I have owned Lexus and Cadillac and never experienced this type of noise. For a $65K price tag and a Mercedes you would expect better performance.
I just got back from driving to Florida and rented a Chevy Suburban and drove it for 10 days.... cabin was quiet and never heard the engine/transmission. When I got home and jumped in to my new Mercedes, I could not believe the difference in the engine/transmission noise....... so much more in the GLE vs a Chevy.....really?
Have appointment at dealership, we'll see what they say. Got great feedback from this forum. Anyone that has more dealership fixing the problems, please share as it will help us all! Thanks