I haven't gotten my X1 yet but the highway government results clearly appear too high in relation to the 328i and the highway fuel economy being so close to the sDrive version is also a bit strange.
I suspect this car like other cars are tested in base stripped down configurations when these tests are done.
I wonder how much weight the power seats, navigation, moonroof and larger tire size etc., add to the car and detract from fuel economy.
I'm getting an sDrive version and I will be happy if I can eventually get 32 mpg at a fairly steady 70 mph on the highway. Anything above that would be great and somewhat unexpected.