lol
It shows the fuel in Gallons and when it reaches 3 Gallons it quite literally tells you to Refuel, a Womans Voice comes out the drivers side front speaker and says "Please Refuel"
Actually heres a video of all the warnings, not actually mine but it's exactly the same. She doesn't say all this everytime you start up, just when somethings wrong, theres a 'Check' button on the right stalk you can press to run through them all.