 I wanted to love this car, I really did, but after just 6 months of ownership I ended up getting rid of it as it was a headache dealing with the issues.  The car itself is gorgeous and the performance is great.  It goes down hill from there.  The fit and finish both inside and out was terrible as the bumper never truly lined up properly even after being taken off and re-installed by the dealership.  There were several creaks and rattles inside the vehicle after just a month of ownership.  The dealership fixed it at first but several of them returned not long after the fix was applied...I suppose some of this could be blamed on having the 19 inch wheels and run flat tires which can provide for an unforgiving ride quality on poor road conditions (which I unfortunately have to deal with for a portion of my daily commute).  The deal break though was the electronic gremlins I had with the active safety features.  On several occasions I had issues with the Collision Prevention Assist feature which actually almost caused a couple of accidents itself as the system would fail completely, then disable traction control, as well as reduce engine power so that when pushing the gas pedal all the way down to the floor the car would barely even accelerate and there would be a couple of seconds delay before even begin to accelerate.  If I needed to perform any kind of maneuver to avoid another vehicle or object I would have been in an accident due to this issue.  The dealership was clueless as to what was causing the issue and so was MB in Germany.  The dealership said they came up with a fix in their shop and applied it but I still encountered the issues and when trying to have it fixe again the dealership told me that the computer didn't even record the malfunction and therefore couldn't investigate any further since there were no software logs.  After that I had enough and got rid of it as my family's safety is more important to me than what I had hoped for with this vehicle.