 I leased the 2012 ML 350 about 2 wks ago. This is my first MB. So far, it's been in the shop twice at 2 different dealerships. After several days of driving, I noticed the vehicle would start to shake when I reached 65mph. Also, the windshield wipers chatter horribly and are very loud. So I took it in. They worked on it for an entire day. The same problems persisted. I took it back in a week later to another dealership. The shaking seems to be much better, however, the wipers are chattering worse than ever as I discovered today during a rainstorm. Yes, the vehicle is beautifully appointed and looks great etc. but it is very irritating to be in and out of the shop with a brand new vehicle. 