My car has the worst odor I've ever smelled in my entire life coming from my AC when I start the car. It's so bad you have to leave the door/doors open when you start the car because it will literally run you out of the car. It's been happening for a very long time and is so embarrassing when you have people riding with you; you have to explain it to everyone so they don't think someone has emitted gas. Mercedes Benz cannot find or fix the problem (but they gave me every indication without saying that "we know"). After research I have found this is a known problem and Mercedes Benz will not help/repair any of our cars, or charge huge amounts while the car is still under warranty and it still doesn't fix the issue. It's really disappointing when you're a loyal costumer.