[MystroX5]

Originally Posted by Thewolfbmw

I just noticed the same smell on my M50i. Never had this smell before on any other X5.

With working from home, I do not drive as much but I feel that is not the cause.

I smelled it on the start up. Drove about 20 mins, parked for 30 minutes and started it back up. Same smell.

Did your ever come back or did it go away?

Thank you

Could be just stale air. A good thing to try is run the climate without AC on for 5 minutes before shutting off. Mold is a candidate in our warm weather with AC running and then the vehicle sits for a week letting the moisture sit and dry. If the garage doesn't get a lot of air flow, then it could funk up the air with a stale/mold smell. .

[nvsocr7]

by chance does anyone who has this smell also mostly use costco gas?

[sjak92]

thats what AdBlue smells like on diesels to clean the DPF etc, but you don't have a diesel. is there an equivalent for the PPF on petrol cars?

[StanTheManBG]

Most new cars run leaner during cold start to properly warm up the cats. It's absolutely normal for such smell to appear. Drive the car for a while until it's properly warmed up and see if you can smell it again. You probably won't because now the engine runs at regular mixture.

[apw2607]

It’s completely normal. Nothing to worry about.