I'm reading more and more about this, a week before I take delivery of my 2011 GSW, and starting to crap my pants. I am just coming off of an Audi A4 2.0T FSI and had a very similar issue: HPFP failure resulting from the cam lobe which drives the HPFP being too soft, which allows for scarring on the lobe surface. This breaks down the cam follower (not a roller follower like this, just like a thimble), then the fuel pump. $4k and 3 weeks down the road, and it was fixed. I was out of warranty (but only 40k miles), no joy from the dealer OR AoC.
I've queried the dealer on this and they're telling me it is bad fuel, and are not seeing very many examples of this in Canada (the ones they ARE seeing still have travelled to the US, possibly using non-ULSD [which I didn't think you could even buy in the US], contaminated or poor quality fuel, leading to the contaminated fuel system/destruction following.
I've heard several people explain this matter of factly due to metallurgy, or bad fuel, or production range issues. Has anyone heard of this in a Canadian car that's never travelled to the US, or never had this explained as fuel quality problems?
In the Audi, I kept the parts that were replaced, just mind blowing. This is a potential issue on all 2.0T FSI gasoline engines from VAG, as I've since had Jetta owners, Seat, and other Audi owners join a FB group I started (
http://www.facebook.com/?ref=logo#!/group.php?gid=235507629582&ref=ts) but unfortunately was never able to get joy from the dealer or AoC