Not good....VERY lousy! I think (we're in canada) it's like 18 - 20Liters/100km .. funny thing was that going to the 22"s from stock 18"s actually improved it... not sure if it was due to the momentum of a heavier wheel.

PS - which explains why it has a 110 liter tank.... gas station on wheels! But you don't purchase that for mileage... its usually a trade off (I actually downsized from a 5.4L to a 4.8)...

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SOLD - 08 X5 (Titanium Silver w/Black Nevada with all options).