Several issues since I purchased 2011 CC. Now has 44K miles.

Yikes! 1-maybe a suspension part is worn, 2-maybe the tires/rims are not stock, 3-brake issue = safety issue! have the dealer check it out ...again, 4-maybe an intermittent electrical issue that is hard to duplicate and fix, 5-serious safety issue! have the dealer see it ...again, 6-is it like in neutral? 7-do you have stock rims and tires? whew!

(6) I had a similar problem and later found out it was the engine speed sensor that had malfunctioned. The car went into limp mode. That means anytime I tried to accelerate and the rpm goes above 3,000, the car will limit itself and even disengages to prevent possible further damage. It will rev but won't accelerate. I don't know if this is what you're experiencing but if you see the EPC or engine indicator, that's would indicate the root cause. (7). I replaced the worn out stock Continentals with Yokohamas YK580. Ride quality improved substantially. In addition, water pump failure, HID bulb and AFS (cornering lamp) failure, carbon clean up, micro switch failure (window won't drop when opening the door).