i shouldn't actully run out of fuel.
there is a sensor in the tank that shuts the engine off before it runs out to save the pump.
all the details are in the handbook. sometimes the fuel gauges get a little stuck on the transits. i rolled 90quid in mine the other day got back in it and the fuel light was still on
it took about 5 starts before the gauge went up.
manybe the fuel senders got stuck down,
just a thought............