Just got 45mpg from my 2006 XT660R in Jersey, although all I do is stop start stop start, especially as I do CBT training.

The Beemer may get better mpg but is more expensive to buy which you would have to offset.

As previously mentioned by others it all depends on how you ride and the condition of your bike. I've been away on my old blade with a mate who had exactly the same bike (even the colour) and he always got more miles to a tank full as I am a bit throttle happy.

Try and be as smooth as possible for one tankfull and try not to use more than say 60% throttle unless you have to and see what you get out of your tank. Bet you'll be surprised.

Logan

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2006 XT660R
XT500 Supermoto
Hayabusa
DT50MX