av8roc

OK I've had the truck for a few months now. I am methodical with how I track gas mileage.. I always fill the tank, compare mileage with AVIC gps and make my calculations.

I am averaging between 9.8 and 10.8 mpg, all driving is around town and I am easy on the gas. I never accelerate hard

Truck is '05 FX4 Scab with borla exhaust and K&N intake. 5.4l engine with 72k miles

Is something wrong? From everything I have read online I would expect at least 13mpg and perhaps better. If so where should I start?

Tune up? Drive train?

razzle

I have an 06 5.4. I am getting 15.8 around town.

ford lover 07

Yeah i have an 07 5.4 with 58 k on it and if i drive really easy I'll Mabey get 11.5 and that's calculated not what the truck says like wth that's terrible what can i do to improve it? Anybody know and I'm completely stock except for the gotts mod thing

jrmongi

Here is a list of things I have had affect my mpg bad fuel and air filter, bad caliper, hung/ rusted ebreak, bad hub bearing and my new problem IMRC control stuck open or closed can all effect mpg some more then others I would look at plugs from what I'm getting from my relative that works for ford they really don't last much past 60k. All I can say is search the forum there alot of mpg threads with a ton of information on how to improve mpg what I mentioned are a few but the most damaging I have dealt with on my truck