I think you missed the part about it being in the wet.
It doesn't say that they were hacked for sure. Why the title proclaiming that it has?
They sell the 335d here in the US - I own one and I still end up in the mid-upper 20's mileage wise. On the other hand, my 600cc motorcycle that does 0-100 in about the same time a very quick car does 0-60 gets 35mpg when beating on it.
I actually live in that neighborhood. haha.