[ptack]

Was at a BMW event at their NA HQ and the question of fuel pumps came up with one of their technicians. The answer was that BMW originally saw a high failure rate with the first gen pumps and had to replace tens of thousands of pumps. The newest version which is in the N55s, the N54 "s" engines and in used to replace any failed pumps has only had a few failures (less than 5) to date. They felt that they had solved the problem.

Later someone else asked about breaking engine bolts and exploding S54 engines and a different BMW person shifted into corporate speak with "we don't know anything about that, and beside that's a technical question and we have no engineers here". I think the tech was being honest and the spokesperson was trying to steer clear of a whole new minefield.