Cabin filter OEM BMW or OEM FORD

The why shupack answered, the fix if you care could be to try a third party cabin air filter. If there are any out there with a larger amount of carbon in them (carbon absorbs odor) that'd help. Replacing the cabin air filter behind the glove box is fairly easy to do and several YouTube videos on it. Cheaper than having the dealer do it, and 3rd party filters claim to be better. We did notice less smoke smell from the wildfires last summer when I swapped out from OEM to whatever filter I put in.

Have had my 2015 535i X drive for 3 months now and I love it. Was looking at B58 for a while, and decided to go with the one I have now because it had 80k miles, was in great shape and had good maintenance records.

BMW M240i - it got an oil change, and a cabin filter. Continues to plug along just fine.

I think it was my 80s bronco, like changing a cabin air filter. Undo hoses in engine bay, open glove box, open a door and slide it out and slide the new 1 in, attach hoses, close it up. Did it in less than 10min.

Bought a new set of tires, and a cabin filter. That's it.

Unexpectedly low maintenance costs (my cost just skyrocketed because I replaced my windshield wipers whereas to date in three years I'd only had to change the cabin air filter a few times).

I've had to replace the cabin filter 2-3 times because of this problem. At first the smell would go away after replacing the filter, but eventually returns, usually when spring rolls around.

I've had to replace the cabin filter 2-3 times because of this problem. At first the smell would go away after replacing the filter, but eventually returns, usually when spring rolls around.

That never got replaced, the filters still look white after 2-3 years in the cars I work on, this looks 5-10 years old.

That was not replaced in the last 5000mi. If you have an itemized invoice, I would check to see if it states what part was installed.