[QUOTE=ABMW;698068]
Yes, I'll admit under ideal circumstances (like downhills, tailwinds, drafting behind a tractor truck, being towed for 50% of your trips distance) it is possible to "see" 20 miles per gallon on the trip computer. But it's so rare that you might as well take a picture of it.

Actually, I was on I-95 which is basically a level road, no tailwind to speak of and certainly not drafting any tractor trailers. Plus the X was loaded with suitcases, tools,, dog and two adults. I don't think 20 mpg is all that rare for strictly highway driving.

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2007 X5 4.8i Space Gray
2001 X5 3.0 Titanium Silver