PS. My measurements were during periods where I was driving conservative. It isn't hard to get 8MPG and thats usually about how I drive.

I'm a BMW M5 lover stuck in a F150 world.

'99 SuperCab 4.6L 4x4 auto w/ 85k miles.
Average 13-15mpg over the last 4 years. I'd like to know how these other guys hit the 20mpg mark!

re
 

with my old 99 ext cab. 4x4 auto 3.73 gears i got 21 best 12 worst, and my ave. was 15-18 hwy, not sure what it was in town... not much intown driving...

:lol: She drives it like an old woman and I drive it like I'm at Martinsville......

My last tank full ran at 9 mpg. But that probubly had more to do with the plow on the front of the truck than anything else.

Usually in the low to mid 14s otherwise.

Doug

Just filled up today with 275 miles on the tank and i got 12.9 mpg highway at 70 mph. K&N SUCKS!!!!!!
Oh, it's a 98 XLT supercab shortbox 4x4 w/ 4.6 auto

The worst I got was 15.5 MPG. That was my last tank when I was heavy on the gas( raced a friend on the interstate for about 10 miles at 100+) btw beat his 1990 chevy. I avg. about 17 or so.

22 on the higway with 33's and 3.55 gears. Good gas mileage, but sucks at low end tourqe.

33's with 3.55 gears isn't helping your low end torque any.

You should consider a steeper rear end gear...

97 4.6 33's new magnaflow exhaust, mac intake ,roll n lock bed cover, 138k miles. The best I have seen from my truck on the hiway is 12.5 to 13.5 and around town is 10 to 11. Around town I have a heavy foot(new exhaust is begging me to get on it) .:devil:

i get upper 13's highway '97 4x4 107k bed cover, flowmaster super 40, K&N. and 285's

1997 Expedition 4x4, 4.6 liter, 3.55 rear, 17 inch tires, bone stock

Best Highway MPG - about 19 mpg (400 mile drive) - summer blend 87 octane

Average MPG - about 50/50 highway and city - summer blend 87 octane - 14.5 mpg

Average MPG - about 50/50 highway and city - winter blend 87 octane - 12.5 mpg

City driving - don't know but I suspect 13 mpg or less

I have a 97 4.6L f150 4x4. I get 14-16 during the summer, 12-14 during the winter. When towing it only gets 9-11.

Milaege
 

I am only getting 10 to 12 on mine 1998 4.6L

10 year old thread and the mileage really hasn't changed on them....unless they're being poorly maintained