Hi All SIFU out there,my X5 recirculating mode seems to be malfunction as I can smell exhaust fumes from outside the car especially when I am at traffic light or following very near to another car. I have send to Autobavaria Pg 3 times already and so far the answer has been that this is standard and is a safety feature where the ventilation will open intermitently eventhough it is in recirculating mode (not the "A" mode). I wonder if anyone has similar issue and what has been done? Thanks.