lets here it...no matter what i do i get freakin 13.....trailering boat...13...highway...13....city...13...drag racing....13...addtion of 33's....13

 

better than 12

but i get 15 in the summer

 

15 mix avg with short city trips (<5 miles) and 35 mile roundtrip to work.

19-22 hwy depending on speed, topography, etc.

2001 4.2 V6 with 162,xxx

 

Around 12 during winter with half city, half highway. 14 during summer if I am lucky.
5.4L 2wd

 

15 city, 18-21 highway. Specs in sig.

 

10 city hard driving about 15 if im not lead foot and about 16 mpg running 115 km/h hiway.
Running 4.56 gears on 33's with a 4.6 auto

 

I get 16-17 on the freeway, and about 14-15 driving around town.

 

'03 Fx4 5.4L 119K miles 265x75r17 Michelen streets

11.5 in town 16 hwy

 

95 5.8 10 on a good day with 33's and stock gears.

 

98 4.6 with 35s i get like 9 city if im lucky and about 14 highway stock 3.55ls gears

 

12 - 13 city 17 -19 freeway. stock 2001 screw 5.4

 

Dude...I so feel you pain!!! I get between 11.5-14.5. My best mileage which was 99.9% highway only netted me 14.9 mpgs!! And this was AFTER cleaning the TB and MAF! So I have never seen 15 mpgs! It seems that no matter what I do i get the same mileage as well. I think its just the 5.4!----DirtySCREW

 

my average is about 13 mpg

 

03 Screw 5.4 with 33 inch tires and other mods

 

how much would a dirty fuel filter and a dirty pcv affect mpg?