I just bought a 05 lariat screw and am getting only like 14.3 miles per gallon. I have the the 5.4 engine and the 3.73 gears. Of the 2500 miles on teh truck about half are highway and half are city. I dont beat on the truck at all. Just normal acceleration and speed. I also have put a K&N replacement air filter and a tonneau cover on it. They did help but not much. So my question to u guys is if this is normal or do i have a problem. The only reason i think there might be a problem is that other guys ive talked to are at least getting 15 and they dont have a cover or K&N. i havent talked to the dealer yet thinking it will get better but it hasnt

Any thoughts or suggestions u guys have to get more mpg would be great.

 

Same setup...same mileage....it is what it is....

 

If it is a 4 x 2, then it is a little lower than I get. I have the 5.4, 3.55, Screw, 4 x 2 and get 16.6 around town and 18 mixed on the highway. I don't drive slowly, 75 to 80 on the highway. I do not drive to get mileage, I could get better, I'm sure. I have the K & N filter, Flowmaster but I doubt either one helped on the mileage much. I keep all records on gas purchases and have averaged 16.75 over 10,354 miles. Nearly all of it around the Fort Worth/Dallas area.

 

lol dont feel bad guys, i have 4x4 screw lariat 3.73's 5.4 blah blah blah only get 10.4 mpg

 

if its a 4wd, then its just like mine, 05, supercrew, lariat, 4wd, 3.73, and i get an avg of 14.1-14.3

 

You're right on the money with what I'm getting. 4x4 Lariat screw mostly highway commute 14.3-14.8 average. I was getting an average of 1.5 mpg better than that this spring while not running the a/c.

 

4X4 Screw w/ 3.73 5.4 2400 miles. I get about 15.2 MPG, but I try to keep rpms below 2K. Towing I get about 10.2 .

 

2005 4X4 Screw w/ 3.73LS 5.4 1400 miles. I get 14.9 - 15.1 MPG average, about 50/50 city/highway.

I avoid fast starts. I floored it to merge with traffic and I lost .2 MPG and it took about 60 miles to make it back up to 15 MPG.

I've got the line-x spay in which adds a little weight. I have a roll-n-lock on order. After it's installed I'm curious to see if my milage improves due to the better aerodynamics.

 

just got back from a 1600 mi trip. tank 1: 12.34 mpg tank 2 (city): 11.3 mpg,
tank 3: 15.1 mpg tank 1 and 3 were both full interstate, 78 mph (2k rpm) was semi disappointed that the max was 15, but oh well- still love my truck.

 

I only get 10 miles and I have 4.6, 3.55's, xcal2, imco exhaust. Wanna trade?

 

Damn doc, you should REALLY feel bad... I got the same truck and consistantly see 15s week after week...

 

Remeber that a new truck does develop slightly better mileage after broken in. My reg cab FX4 get 16 city 17.5 highway....just did intake, so mileage will be less....kinda liking the sound of it at WOT.

 

i get 10 miles to the gallon with my 6in lift and 3 in body lift on 37's, i have the 3.73 on my 04 lariat

 

You should have known before buying!

 

Not to be a jerk, but if you were very concerned about gas mileage, you should have read these posts BEFORE you bought the truck, this topic gets kicked around alot. Some answers I have got in the past are; don't drive as much, put it in neutral and coast down hills, etc, etc. It's painful, I put $47 in Saturday for 3/4 of a tank. Best of luck with your new ride.