Originally Posted by PimTac
Compared to most modern production plants, this engine has a lot of human intervention and in this case it's one person unless the video was planned with just that one person.
AMG engines have always been hand made by one person and signed by that person. On some forums, members compare who their engines were made by.
I hope this one is a good one, an earlier AMG engine, the M156 had headbolt problems in addition to a few other issues.