Originally Posted by Hassann
Can you please elaborate?
What could be the reason the spark plugs need changing?
If your plugs are "fouled" and not giving you a good spark it can result in the car running "rich" (unburnt gass in the combustion chamber) and damage to the cats will occur sooner or later and the car may hesitate etc...
replacing the plugs will give you back a strong spark and the car will run smoother.
I just had the same "warning message" ....had the plugs changed and added a can of BG44 and its running smooth again...
The un-burnt fuel that can result in you getting the "warning message"
No car is quite like a BMW....