For the X5 Sport that was pictured, i wonder if it's also possible that they are maybe experimenting with forced induction for it as well? The N73 motor may be a bit of a stretch for it. The N54 would make perfect sense for something in between though.
Honestly, i don't know if the sales are there for the E70 yet to justify such a thing. I haven't seen too many of them get sold here, but i don't know if it's a regional thing or not.
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