gas tank, first half and second half Options

[chicklover345]

i get about 200 miles on the first half of the tank and then about 100 miles on the last half. i was wondering if it is "HALF" or if it isnt if i always fill up at half tank will i get better gas mileage or will it be the same and the "HALF" is just actually the second third

[Galcobar]

Half as in the needle moving, or half as in when the E light popped on -- the tank is (for Americans) 15.9 gallons but the light pops on when there's four gallons left. So the first half would be about 8 gallons, the second before the light would be 4 gallons. Half the milage sounds about right.