I was snooping over at the S class section and saw that there were a few threads of people saying that it isn't working very well. How is it working for you?

Wouldn't have a Merc W/O it ... Flawless in two past Merc over a 4 years span.

Mine seems to be working well...I like it but there is only one scent I care for.

Which one do you like? I haven't smelled any yet. But one that supposedly smells like wood, cognac, and leather caught my attention.

I think it's called downtown mood

That's the one! We must have similar tastes in smells. The rest of them sound okay but I'd imagine them smelling like those cheap bath and body works perfumes on those plastic bottles that teenagers wear.

Love my air balance system, but I'm still enjoying my "new car" scent! Wish they make this scent available so my car can keep smelling brand new forever.

Ahhh the Mercedes new car scent. It's like the smell of a brand new BMW and a brand new Audi mixed together.

I have my AB set on 2 and I barely notice it anymore and I've never had anyone comment on the scent but when I do smell it, I appreciate the scent.
Does anyone know how long they are supposed to last before it needs to be replaced?

It all depends on how often you use it and the strength in which you set it at. I assume if it's in the holder that it's sealed so it dosent evaporate.