Leakdown test can determine if you are having a mechanical or electrical problem.

My wife's car has been rough starting a few times and once in a while also same type of code. I replaced a coil when it repeated a particular cylinder but then moved to a different cylinder.

I'm suspecting either weak fuel pump (original with 170,000 miles it's definitely past it's expected life span) or dirty injectors. Somebody else on the forum just posted that some techron cleared his misfire/cutoff problem.

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)