I only use premium 93 octane. I'm going to try doing it the old fashion way like mister suggests, maybe it's not that bad.

Can't remember from the summer but in winter my computer has been saying the same average as I calculate. Well almost same. It is like .1 or. 2 off and I think that is very normal.

So I guess I shouldn't complain about the 12.1 I'm averaging in my '02 4.6; sometimes I actually see the needle move.....

i'd give up 1.6 mpg for 60 ponies

The other thing to consider is whose blend you are using. Some people blend in a bit more ethanol, and with that, down go your numbers.

My fiance rarely drives on the highway. Work is about 3 miles up the road from our home. Averaging 10.3 mpg :D

the only way my 4.4 is seeing 30 mpg is if im going down hill with a south wind on the back of a trailer being pulled by a hybird :rofl:

I don't get when people nickle and dime their X... I just enjoy the hell out of mine. I dont try to squeeze a few miles on my gas consumption.

:iagree:

With gas at less than $3.00 a gallon why skimp?

Funny but posts like this remind me that I should check the consumption on mine once in a while. I have never paid attention. As long as it doesn't break I'm happy.
The gas is cheap, and I really appreciate it every time I come back from Europe where to fill up an Opel Corsa (Honda Fit type) I spend around $130. $50 to fill up my X5 is close to nothing.