"Excellent vehicle. It was in excellent shape and appearance when I purchased it. It runs quietly and smoothly. It is a convertible no less, so I never expected it to be so quiet inside without the radio playing. I do not have nor seen the problem regarding the carbo build up. I do believe it vehicle to vehicle with that issue, and probably based on how you drive it. I absolutely love the vehicle and would buy another one to replace my VW CC in a heart beat (without the hardtop convertible). "