I have a 2012 550i and have been fortunate enough to have very few problems with the car (bought used in 2015). My old 2008 535i was one of the first (recent) direct inject engines and I had problems with misfires/limp mode and subsequent carbon cleaning solving the problems.
I haven't had any issues with my 550 yet, but I was wondering if anyone else has had any issues. I'm having some routine work done and was wondering if preventative carbon cleaning might be a good idea.
Carbon deposits on N63 engines are a problem, yes.
The entire engine needs to come out of the vehicle to carry out the cleaning, its not exactly a "hey while you have the car" add on.
Tenured Automotive Service Professional - Avid BMW Enthusiast
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