i'm having the same issue...
my car just hit 54k and on monday, i am driving to my barber shop and out of nowhere my CEL comes on and the car is stuttering under 2k rpm above that it's pretty smooth but i really don't want to push it.
I'm not sure if it's me HPFP & Injectors because i already had them replaced last year, i have a 2008 338xi what do you think it could be?
I did not see any oil leaks, no funny smells, i'm not sure if it's a bad coil or spark plugs/wires
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