Got my first mini almost 2 months ago, and I love it. But... Now it has a misfire at idle (in neutral and drive), also stutters when leaving from a stop, and sometimes when accelerating from low rpm's. Got worse with first gas fill up that didn't get the bmw fuel additive. Also no check engine light yet. Anyone out there that can help me figure this out?

 

What engine? N16 or N18? Could be you Bosch coils