Fuel gauge faulty on delivery : dealer replaced, no charge.
Driver's seat creaked very badly : after several attempts to repair, dealer replaced, no charge.
Whilst in dealership, front wing scratched : dealer re-sprayed to my total satisfaction, no charge.
When next in for service (soon), I will also ask dealer to check "clunky" steering and rear brakes which stick on when parked overnight, releasing with a jerk as I drive off.
The car is fun to drive, performs well and is economical.
However, the seats still creak a little, they are too firm and the suspension is harsh : unexpectedly, the car is best on the motorway rather than country lanes and urban roads.
I did not buy a Merc. to ride on "cart springs" and to realize after a few weeks that there is not even a light in the boot space!
Basically, this should be a superb small car, but it is actually overpriced for the quality and comfort you get : I was happy to pay the Mercedes price premium, but now feel to have been short-changed...it will have to improve if I am to purchase another.