 I really wanted to love this GLC. On paper, it looked perfect. Ive owned 5 previous Mercedes and expected it to be a modern state of art design with traditional MB quality and driving dynamics.  I custom ordered it and waited several months for delivery. The similar designed C300 sedan loaned me while awaiting delivery was a fantastic vehicle. It does has a lot of great features; classy design, great looking interior, a refined strong drivetrain, high overall quality. BUT..... This vehicle has SEVERE driving flaws, terrible controls and layout, the worst NAV/audio/infotainment system Ive ever experienced in any vehicle [and had the priviledge of paying $4K extra for]. These flaws have ruined the ownership experience for us.   On smooth roads, it drives and handles fine. On certain rough surfaces, the car shakes, rocks, shudders, bottoms out,  and feels like the front suspension or front frame is loose and disconnected from the road . Scary and unsafe to drive. I NEVER expected this in a Benz since all previous ones had a " locked down" driving quality on poor road surfaces. I dont know [or care] if this is result of bad tuning, run flat tires, or a flaw in this particular GLC....but its scary and unsafe to drive on rough roads. The wiper/wheel adjustment/cruise stalk controls and transmission shifter are all on the steering column, all milimeters apart from each other causing you to activate the wrong feature. Who thought of this confusing lever layout and what were they thinking ? The NAV/audio features and controls seem thought up by tweens that never...well ever used them in a moving vehicle. The IPad style screen stuck in the middle of the dash looks tacky and PepBoys classless,  voice controls rarely work reliably, the radio has no ability to seek/scan stations, the double wheel/touchpad controller on console interfere with each other [Hans, marketing says we MUST have a touch entry because Audi does, I dont care how you do it, stick it on top of the control wheel !] making sure you never select the right control on the first try, NAV system has a great display but takes 5 minutes to tap & dial, tap and dial an address....excuse me, this is 2016 where flawless Google voice entry is the design standard, who is going to take the time to use that ? Mercedes carefully dances around the subject of CarPlay and Android Auto in the GLC..but after a long conversation with MB helpline they admitted.....you guessed it...not availabe and not upgradeable for the GLC.  The bad features overwhelm the good features in the GLC .... a real shame in what could have been ..but isnt...a great vehicle.