On filling my other 2009 ex jazz with 130 miles left on the computer it took all but 29lts of fuel, this is quite different to my other ex which was showing 90 miles left and taking 26lts of fuel, both were showing an average of around 54mpg on the trip meter.
i realise there will be a few variables so i guess its for you to get used to your car and for most of the time its not that important, but dont assume if you are down to nearly 0 miles left you still have somewhere around 8 lts in reserve!