Will be picking up my 2014 428i 2.0 turbo convertible in a few days. My only bugaboo is while the engine was running we popped the hood. A visual on the engine sees an engine that shakes like crazy. Reminds me of a harley engine when idle. I mean you couldn't put anything on top without it shaking off. Dealer says its normal. after taking it for a ride i sure couldn't feel in the car what i was seeing under the hood. The only thing i can think of is the engine mounts sure are doing a good job keeping the vibration under the hood and not inside the car. Can anyone chime in on this. Does yours do the same. I sure dont want to go on a salesman's word that its normal.