oh well.. can't believe they left it out.. and took them a few years to put it into the new models lol..

i know on the 04' managed to squeeze 80km from when the fuel light comes on.. that's with 5L or so left in thank when i fuelled up.

I use 50km as a rule of thumb when the light comes on, gives about 10L left in the tank roughly.. depending how you drive.