I took my '05 automatic 645 in for its first service, and in addition to
getting the oil changed, I went over a list of issues. One of them was,
when accelerating from a complete stop, there will (often) be a
hesitation. It is as if the car does not take all the gas I give it.
It starts off, backs off, and then accelerates normally from there.
It's a slight effect but noticeable just the same. When I described
this to the service advisor, he recognized the description and said he
thought it might be a "software problem". He'd check it, and if I
didn't have the latest software, he'd upgrade me. Well, I did have the
latest software, and so he didn't do anything. The only other thing he
could do was to work directly with the engineers at BMW. I questioned
him further about this, and I believe he said that all 545's, 645's, and
745's are subject to this.
Has anybody else heard of this and gotten resolution on this.