The average is somewhere around 16mpg. My FD was basically stock, and did 17-18mpg on average. That was with lots of "Spirited" driving mixed with highway.



Filling up near 1/4 tank left meant 12-13 gallons, even 14. So, do the math:



$3.25 (93 Octane Guestimate) x 13 = $42.25



13 gallons x 18 mpg = 234 miles



So, like $40-45 to do (More than likely) ~220 miles. How's that fair to your F-150?



Don't forget (as others mentioned), the FD is a bit more finicky and needs more attention/care than an F-150 (I'd assume, I don't know much about truck maintenance)... religious 2.5k oil changes, fuel filter, plugs/wires, coolant flushes, engines (tee hee)...

 

You can run a I-6 4-5k over an oil change, and it is still fine. Oil came out fine also. So think about that with a rotary. Especially an FD.



FD is a nice car, but can be more like a woman in the car world. It needs attention, money, and love thrown at it. Well, the love part could be held back.



Good luck and welcome to nopistons.com

 

on my stock FD I got about 20mpg mixed driving.



After i rebult the motor i didnt do **** for maintence. It was very reliable and everything worked as it should. Mabye I just got lucky...

 

bobby- I wonder what you get now with the twins?

 

i get icanwatchtheneddlegodown MPG



i cant tell because i have no odometer right now...

 

i kind of figured that much. and who cares, when you feel the boost, you don't care about that MPG.