ok a few things id like to say:
yes ive run out of petrol (however due to a non functioning fuel needle and it was sort of deliberate as i wanted to know what i got out of a tank. - i also had a petrol can in the boot
)
However i didnt feel like pointing out id been silly on a forum.. but dont let that stop you in future as its usually good for a laugh.
Its not something you want to happen, not just for hassle reasons but its potentially dangerous, loss of power steering, location of loss of power etc etc..
Also, how far you can get after zero shows on the computer can vary massively as this prediction is based on recent driving, so if you have been booting it, then see its on zero and then drive carefully its quite easy to get a range prediction that was 0 going back up to 10, or 15..
Driving round corners fast i think in particular to the right can aggrivate the issue..
and finally, i generally dont think its good to run so low, - no not due to age old advice refering to crap in the tank which is not so much an issue these days, besides stating you suck in crap from bottom tank is wrong as you always draw petrol from the bottom of the tank! - if there is a potential issue then running low means you could suck in debris on the surface of the petrol possibly, but then if its light enough to float its not going to be that bad and there is a fuel filter in any case.
It can end up costing you money as if you do find yourself running low you can end up spending out more for a few reasons:
1 - you may have to specifically divert to a garage knowing you are low on fuel, - making your journey longer as it was not on your original route. Much better to fill up when passing a garage when you are towards the end of the tank, but not running on fumes
2 - you may find you are in an area where fuel is more expensive. - maybe paying out for BP ultimate rather than tescos for example..
3 - clearly if you do run low then you may have to buy a container, and hey you may even find work dock you pay