This car is a nightmare, a money pit! The engine knock 3.5 litre aluminum motor is a piece of junk. It is a non-rebuildable motor and the GM replacement costs $4,500! I have been experiencing iIncurable front-end vibrations, an uncomfortable interior (the armrests are from hell), horrible gas mileage, an uncooperative climate control system, and a painful sounding stereo. It had power when I first bought it, but now it is a dog. It burns dirty, there is always soot on exhaust tips. It is probably losing compression. At least it looks nice. Please, if you are thinking about buying this car...RUN! Run the other way and don't look back!