Nothing has gone wrong with this vehicle.
This car has proven to be an excellent purchase. Very comfortable, very smooth, a definite head turner. Also it has proven to be very reliable and cheap to run. For a car of this size the fuel economy is quite good as well, averaging 25mpg's.
I have had my Chrysler 300 (2006) for two years and I love it. I have not had any problems and the gas mileage is actually good! It is certainly a head turner!