 The car overall feels great. The most impressive thing is the economy of the 240 bhp vehicle. It gives an impressive 28 on highway. (when mostly driven on Comfort mode/Eco mode, Sport gives around 24-25). Eco rarely gives 30 plus too if weather is conducive and above 50F. Interior comfort and appeal is very good.  Exterior styling is superb.Cold climate package is excellent. Noise reduction is optimal. Acceleration is more than enough when merging (acceleration at the signals might be a damp slow because of the 9 gear shifts, but again if u pump the gas pedal lil hard it will zoom). Learning curve with COMAND will take time. The touch sensitivity of the pad is not that great or accurate. It does sense the handwriting but to enter the whole address that way is a chore. The knob is much better to enter the address (Using mbrace app is even faster).  Navigation is very well organized and the voice instructions are very clear and crisp. Couple of major let downs-- 1.GLC does not have any integration to read out text messages automatically (was disappointed as even non premium cars have it, my old corolla had it). It doesn't even display the message automatically unless you click the messaging app through the touch pad. 2.We are not given the option to change the music track with the steering wheel controls--another major let down. 3. Self parking feature--Probably the most useless feature in the car and would not advise anybody to waste $$ on it. It does not detect any parking space or parking lines. I have the car for about 14 months and not even once did it notify that its sensing a parking area. I liked the car overall very much but don't let the base price fool you. For 39k I don't think you'll get anything other than automatic windows. Even at 60k we din have the lane departure, and few other functions.The refinement and smoothness that I am seeing now in Aug 2018 still resembles that of a new car!! Still going strong