You can't get an exact mpg figure using your gas gauge. It's not that accurate.
You gotta fill it up, note milage, drive it, fill it up again, note milage, then divide the miles traveled by the amount of gas used between fill-ups.
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'89 LX 5.0 - 5 speed. Original Owner
'94 E-150 4.9 Hi-Top Conversion Van
'06 Mustang V-6, 5 speed
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