I have 1588 miles on my 300C. Absolutely love the car!!! It is worth every penny. However I encountered my first problem a week or two ago. I've only used the A/C about 4 times prior with no problems at all, and that time it started blowing cold then just blowing cabin temp air. Since then I haven't needed it, but i check every other day and it does the same thing, starts out cold, then warms up. Haven't had time to get it checked yet, trying to hold out till it needs an oil change. Anybody else have any A/C problems?