QUOTE (jsinton @ Jun 29 2010, 06:01 AM)
Hard to say exactly. It varies. You'll have to find out the hard way if you really want to know. Carry around a can of gas and run it dry.
i did this in my 2005 hyundai. when the fuel light goes on, make note of the odometer. drive to the nearest fual station. fuel up.
11.9 gallon tank (accent) fuel light comes on at 350 miles and it was 5 miles before you got to fuel station
took 10.3 gallons to fill it up. mpg = 350/10.3 or 33.98 mpg
at 33.98 mpg you use 0.147 gallons to drive 5 miles
add the 0.147 miles to what it took to fill it up (0.147 + 10.3) and you get 10.417 gallons
11.9 (tank capacity) minus 10.417 gallons and you had 1.483 gallons left when the light came on
at 33.98 mpg using the 1.483 gallons is 50.39 miles if you kept driving until it was out of gas.
it's just math. convuluted, sure, but still just math.