I have had my CTS-V for 13 months. It has been the most reliable and pleasurable car that I have ever had. I would think that with all the features that this car has that something would have had a minor problem. I haved had nothing go wrong. It had had the oil changed every 3,000 miles and that Is it. The performance is first rate and the handling is excellent. I get praise about this car wherever I go. It is an attention getter. My average mile per gallon is 15 mpg. I think that this is good considering the car's performance. I will definately buy another CTS-V when the new model comes out.
My favorite features are the engine, navigation, OnStar, stereo, opening roof, power window, power seats, air condictioning, comfortable leather/suade seats, etc...
The shifter for the transmission can be made easier to use.