definitely not. much quieter at lower speeds, about the same at highway cruising, the noise is just different. the mercedes had a turbo 4. pretty amazing engine, got 36 MPG on long trips several times, and 0-60 in 6.2. but at idle it sounded like a diesel and the NVH characteristics were pretty poor in general. tesla is smooth and quiet. a little noisier since i moved in all my car stuff (umbrellas, reusable shopping bags, fire dept blue light, pens etc etc) but no squeaks or rattles from the car.Great, not sure if you have already answered this but is the Y road noise more noticeable than the Mercedes?