 I owned my 2010 CC for over 5 years now, with a little over 69,000 miles.  Here is my honest assessment:  Positive:  Design - The car looks great both inside and outside.  Performance - Engine power is more than enough for a casual driver, acceleration is great, even for a 4-cylinder engine.  Negative:  Gas mileage - I am averaging around 22 MPG combined city/hi way driving-that's terrible for a 4-cylinder car!  The only time I can get around 25 MPG is when I drive long distance on the freeway.  Reliability - My transmission needed a major repair at around 36,000 miles (would not go to reverse), lucky for me, it was still under warranty.  Carbon build-up is also a major concern.  At around 57,000 miles, I got a 'check engine' light and then the car stalled.  Had it towed to a dealer and the prognosis was excessive carbon build up in the intakes and failed fuel pump.  It cost me over $3,700 to get it fixed.  What bothers me is the carbon build up.  After doing some research, I found out that, although carbon build up is an issue with all direct injection engine, VW's 2.0 TSI engines appears to be the most affected by it.  Talking to a couple of technician at the dealer confirmed that carbon build up is an issue and the only way to completely get rid of it is to have it mechanically cleaned approximately every 60,000 miles.  The way it is going now, I don't think I will be buying another Volkswagen again.