I have been wondering about this for a long time.... Heres My Recent test.
Filled up the tank w/ 13.18 gallons of gas, I drove 365 miles on that tank,
and at that point my light had been on for AWHILE and the needle was dead on the E for empty, when I filled it up again it took 13.56 gallons.
I drive 80miles a day for work, 60 of which are highway.
This puts me at an average of 27.69 miles per gallon if my math is right,
also right before this fill up I replaced plugs, air filter and oil.
My car is an Automatic.
I dont think this is good milage
my 6cyl. 3000gt got very simmular
milage and it had 230hp and was alot heavier.
What else can i do to increase milage ?!? Thanks...