I just purchased a 2016 M6 competition edition. I’m having the same issues with smoking when I come to a stop I brought it to the dealer twice now and they told me they can’t find any issues with it... I have come across a few posts were some say it’s not an issue, some say it’s a turbo seal, and others saying outright piston and or ring failure. I can’t see how the smoke would appear from a piston or ring issue when decelerating I would think the issue would get worseUnder load. Has anybody actually having the issue figured it out? To be honest I’m thinking about getting rid of it already I just don’t wanna have a major issue down the road
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