Gas tank - distance inaccuracy

Toyota keeps a fuel reserve with all their hybrids, if you were to run them completely empty it would damage the system and need to be replaced.
 
Pretty sure it has to do with keeping the in tank fuel pump cool............. there is no difference between it running out of gas and the engine shutting off..... either way the engine isn't running and unable to charge the battery, however a fuel pump running dry and no gas around it to keep it cool, it wouldn't last very long.
 
Here is what I know . I put 17 gallon in my FE . The light was on low fuel , it was reading empty on gauge and remaining mileage was 16 miles .
I fill the same way every time . If it has a 18 gallon tank as advertised ,
I would say trust your remaining miles or have some good shoes for walking handy.
 
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