DTTECH

Same body, same driver. No matter how much I try I can't beat the mileage of the 5.4
City roughly same but highway not a chance.
The power is great and feels far more but salesperson said better gas mileage. Not going to happen with this rig.

Pipeline Trash

I have a 2010 screw 4x4. At one point I was getting 24mpg on the hwy. Went to a 275/75 mud grip and now I get 15.7 at best. Oh well. Truck looks better.

DrDilemma

I drive a mix of 30% city/ 70% highway, which I imagine is pretty average. I only have 400+ miles logged as of today. The salesman stated I would be getting better gas mileage after I go over 2000 miles? I replaced the stock air filter with a K&N drop in and my average MPG went from 16.2 to 17.8. I drive conservatively unless passing for the most part, but I don't baby the peddle. So for me, the EPA ratings are right on.

jjklongisland

I believe your relative elevation to sea level also has alot to do with the ratings. I know the higher the elevation the less power you make therefore taxing the motor and decreasing the fuel efficiency. Great post though...

yaffe

I have a 2013 f150 xlt 4x4 with the 5.0. I have 2800 miles on it and I'm averaging City 16.8 with a lite foot. I've only made a two 100 mile trips but I'm about to make a 700 mile round trip in two weeks. First trip was 110 miles all hwy and at 60 to 70 miles per hour she got 19.8.

rodeorebel

I got a 2000 2wd with the v6 getting bout 420 miles to the tank. 70 mile round trip to work n back most on county highway bout 10 miles each way of city traffic.

Rohan351

Dont get rid of your catalytic converters, it doesnt give you any more power and may even hurt your mileage. O2 sensors before and after make old tricks no good anymore.

Rohan351

Someone told me that. I would never do that myself.

Rohan351

Splitfire plugs have helped my 2000 F150 get better mileage in the past. Full synthetic oil helps. Royal purple in the transmission also seems to help. Havent gotten around to Royal purple in rear end diff yet.

Rohan351

It also prefers 89 octane. I have gotten 20-30 extra miles on a tank by using 89 octane gas. It makes up for the price difference.