This is a nice car, but the driving experience leaves much to be desired. The Harman Kardon stereo is mediocre at best. The steering wheel presets aggravatingly will not scan presets. The computer should be reset so you don't have to mash the gas pedal to the floor to get a downshift (and then when it comes, it is jerky and more power than you want in most instances). The seats do not have adjustable lumbar support. The nav is unduly complicated and slow and does not work very well. Compare this to a bmw 3 series and it gets blown away in terms of comfort, functionality, and performance--the only thing this car has going for it is that it Mercedes did a nice job with the exterior.
Better stereo. Lumbar support. Steering wheel audio controls that will scan pre-sets. Aportier transmission calibration