Alas, I wish my first post here were not on this subject, but I've had this same problem since I bought my CX-3 AWD GT in November. This Friday will be the third time I take it to the dealer to have the A/C repaired. I love the car, but Mazda's inability to fix this means I will seek to have it bought back if the issue is not permanently fixed this time. With the past two repair attempts, the A/C would work for a day afterward then nothing but heaving sounds as though a condenser was trying to do . . . something. My local dealer hems & haws about, "Oh, well the coolant leaked out because of a bad seal" [first repair attempt] and then, "Oh, well, a tube wasn't properly connected; it should work fine from now on" [second repair attempt]. The A/C stopped working a day later, and I've had to wait 2 weeks just to get another appointment. Even the worst cars I ever had had working A/C.