Gas Mileage Expectations
Senior User
Joined: Apr 2002
Posts: 157
Likes: 0
From: Chautauqua County, NY
Nighthawk,
To answer your question, the EPA rated the 4.6 and the 3v 5.4 as both 14 city and 18 highway. While the 4.6 will pull your boat you will be very displeased with a 4.6 if you drive a 5.4. I pulled very similar loads and my 97 f150 had the 4.6. Now that I have the 5.4, there is a night and day difference between the two. You will definitely regret getting the 4.6.
To answer your question, the EPA rated the 4.6 and the 3v 5.4 as both 14 city and 18 highway. While the 4.6 will pull your boat you will be very displeased with a 4.6 if you drive a 5.4. I pulled very similar loads and my 97 f150 had the 4.6. Now that I have the 5.4, there is a night and day difference between the two. You will definitely regret getting the 4.6.
Last edited by RX 1 Liter; May 28, 2004 at 02:31 PM.
Freshman User
Joined: Dec 2003
Posts: 38
Likes: 0
NightHawk
There is nothing worse then driving a under powered truck. I had the 97 F150 with the 4.6L. It drove fine empty, loaded it sucked. My 2000 had the 5.4L and it was great. I pulling 5000# loads through Mountains did pretty good. I now have the FX4 5.4L with 3.55 LSD. With 50/50 driving I am getting 14.8-15.7 with 86 octane. Hwy miles at 80 mph I have gotten 17.9 mpg.
IMO you are better off with extra power not being used then getting into a situation where you need the power and dont have it
There is nothing worse then driving a under powered truck. I had the 97 F150 with the 4.6L. It drove fine empty, loaded it sucked. My 2000 had the 5.4L and it was great. I pulling 5000# loads through Mountains did pretty good. I now have the FX4 5.4L with 3.55 LSD. With 50/50 driving I am getting 14.8-15.7 with 86 octane. Hwy miles at 80 mph I have gotten 17.9 mpg.
IMO you are better off with extra power not being used then getting into a situation where you need the power and dont have it
Last edited by Den01; May 29, 2004 at 09:23 AM.
Senior User
Joined: Mar 2004
Posts: 280
Likes: 0
From: NORCAL
I have 2004 FX4 5.4L 3.73 gears......I am only getting about 13.5 miles a gallon.....60% city 40% hwy....
You guys think the new computer flash will help me out? I should be getting atleast 15 MPG I would think if not 16MPG AVG.
You guys think the new computer flash will help me out? I should be getting atleast 15 MPG I would think if not 16MPG AVG.
