Sponsored

What are you guys getting for fuel economy?

What’s your 3.5L EcoBoost fuel economy?


  • Total voters
    89

Carnious

Well-known member
First Name
Kevin
Joined
Jul 8, 2025
Threads
18
Messages
66
Reaction score
21
Location
Red Deer Alberta Canada
Vehicles
2025 F150 XLT 302A
Occupation
Aircraft Maintenance Engineer
I’ve got the 3.55 rear axle, and after driving home from the dealer on the highway, I got about 10L/100KM.
Since then, I’ve put on a bed cover, and reset my fuel economy. I went on a super easy road, and “hyper miled” it, and got about 7.5L/100KM.
But typically I think I’ll be seeing 10L/100KM I would assume, or slightly better on the perfect days.
-Calculating out my range on a 10L/100KM tank at 136L, I have a range of 1360KM, which is amazing!
Or if I was able to hypermile it on a trip, at 7.5L/100KM I’d be looking at 1813KM range, which is just nuts!
What do you guys typically see?
Sponsored

 

StoneGray22

Well-known member
First Name
Jonathan
Joined
Nov 28, 2021
Threads
7
Messages
318
Reaction score
169
Location
Texas
Vehicles
22 SCREW, 500A, 3.5 EB, 4x4, Max Tow, 157"
My average is ~17.5-18 mpg. No level, stock tires still (just hit 44k miles today). My daily commute is about 8-10 miles each way, which I'm sure is contributing to my low mileage. A few times a year, we take a 1000 mile round trip over the weekend or for holidays.

At the beginning of the month, we took a 3k mile trip from Oklahoma to Wyoming and back. Got 19.87 mpg over the course of that trip (per tank average was 18-22.4).

Edit: values reported are hand calculated, the dash always displays 1-2 mpg higher.
 
Last edited:

JoeF

Active member
First Name
Joe
Joined
Jul 3, 2025
Threads
0
Messages
31
Reaction score
27
Location
Columbus, Ohio
Vehicles
2024 F150 XLT Offroad. 2024 Honda Civic Touring. 2025 Grand Design 22MLE
Occupation
Retired engineer
Mostly tow a camper that weighs around 5,200 to 5,300 pounds. 11 to 12 MPG depending on how many hills have to be negotiated.

For casual driving, I use my Civic which is designed to get good milage; and it does.
 

digitaltrucker

Well-known member
First Name
Ed
Joined
Aug 6, 2020
Threads
18
Messages
404
Reaction score
209
Location
Texas
Vehicles
2021 F150 Platinum, 2013 F150 Lariat, 2008 F150 Lariat, 2005 XLT, 89 F150 Lariat
In Eco mode mostly, I get about 18 for around town so to speak. On the road the other day I got 25.1 at 75 mph.
 

rpold150

Well-known member
First Name
Robert
Joined
May 15, 2022
Threads
5
Messages
480
Reaction score
345
Location
Texas
Vehicles
22 F150 Platinum
In Eco mode mostly, I get about 18 for around town so to speak. On the road the other day I got 25.1 at 75 mph.
Surely this was downhill or with a massive tail wind, or with the 2.7L.

My platinum with 3.5EB has 3:31 rear, light weight AT tires that are only a couple pounds more per tire, and 34" versus stock 33". I am leveled in front. I know my level, slightly heavier tires don't help, but I'd love if my truck got a couple more mpg than it does.

On flat road, no wind, doing 70mpg, I can maybe eak out 20 mpg. If I'm in town or short trips, I'm seeing 15-16. Anything outside of optimal conditions and I get 15-16. I have never seen anything over 20 except for a short burst of downhill, tailwind, doing 45mph, etc.
 

Sponsored

digitaltrucker

Well-known member
First Name
Ed
Joined
Aug 6, 2020
Threads
18
Messages
404
Reaction score
209
Location
Texas
Vehicles
2021 F150 Platinum, 2013 F150 Lariat, 2008 F150 Lariat, 2005 XLT, 89 F150 Lariat
Nope Houston to San Antonio.
 

rpold150

Well-known member
First Name
Robert
Joined
May 15, 2022
Threads
5
Messages
480
Reaction score
345
Location
Texas
Vehicles
22 F150 Platinum
I live in west Houston (Katy). I bet if I made that trip, doing 75, I'll probably get 19. I just don't see how there can be that much difference in the mpg of these trucks.
 

OGKC

Active member
First Name
Casey
Joined
Oct 15, 2024
Threads
3
Messages
27
Reaction score
14
Location
Denver
Vehicles
2021 F150 Screw 5.5 eco
Occupation
building engineer
I average around 15.5 mpg.
2021 3.5 ecoboost. Fox 2.5s is about a 2-2.5” lift. 35” tall e load range Falken wildpeak tires.
CV Fab intercooler and catted down pipes.
I think if I were to run it down the highway for a trip I would see about 21/22 mpg.
I also live in Colorado so up and down mountains all the time and I routinely tow an 8000 pound camper. Towing flat at 75 I can get about 12. But the mountains screw that up badly so 10 ish.
 

ewrich2009

Active member
First Name
eddie
Joined
May 3, 2025
Threads
2
Messages
29
Reaction score
43
Location
mississippi
Vehicles
23 f150 xlt 3.5 ecoboost
Occupation
service tech
17 mpg 85% around town. Very little highway.
 

My 2ND Ford

Well-known member
First Name
David
Joined
Jun 28, 2021
Threads
25
Messages
728
Reaction score
790
Location
Ny
Vehicles
2021 f-150 Platinum, 2014 BMW R1200RT
Occupation
Retired
21 3.5 ,3.31 rear. Stock tires, no level, 157 wb. Soft tonneau cover. Bare truck, flat terrain , 23-24 mpg highway, about 70 using Eco mode. If I mount our two bikes on the hitch, mpg will drop to 21-22 on the highway. It's amazing how much drag the 2 bikes produce. Back and forth to town about 17 mpg. Compared to the trucks I have owned, this thing absolutely sips gas.
 

Sponsored


digitaltrucker

Well-known member
First Name
Ed
Joined
Aug 6, 2020
Threads
18
Messages
404
Reaction score
209
Location
Texas
Vehicles
2021 F150 Platinum, 2013 F150 Lariat, 2008 F150 Lariat, 2005 XLT, 89 F150 Lariat
Here is my display today after 2 round trips from I10 and Fry to Gessner, added in to my trip on Monday.
Ford F-150 What are you guys getting for fuel economy? IMG_0984
Ford F-150 What are you guys getting for fuel economy? IMG_0986
When I topped off to come home on Monday, it said I had 510 miles to empty. I think it was the gas I got at Buc-ees! LOL!
 
Last edited:

Tilstad

Well-known member
First Name
KJ
Joined
May 13, 2025
Threads
1
Messages
70
Reaction score
44
Location
Tx
Vehicles
2025 F150 RCSB
14mpg. I have a heavy right foot.
 

Jaydub

Member
Joined
Jan 18, 2025
Threads
0
Messages
6
Reaction score
5
Location
Here and there
Vehicles
2022 F-150 XLT
I just completed a ~550 mile trip, including a mountain pass. I took the same route back, so it was equal amounts uphill and downhill. It was probably 80% highway, 20% backroads and towns. I got 23.5 MPG. On my commute, which is 75% highway, 25% city, I get about 20-21 MPG. I don't drive just around town much, so it's harder to tell, but it seems like 15-16 MPG.

If I calculate the mileage manually, it's around 1 MPG less than what the trip meter says.
 

rpold150

Well-known member
First Name
Robert
Joined
May 15, 2022
Threads
5
Messages
480
Reaction score
345
Location
Texas
Vehicles
22 F150 Platinum
Here is my display today after 2 round trips from I10 and Fry to Gessner, added in to my trip on Monday.
IMG_0984.jpeg
IMG_0986.jpeg
When I topped off to come home on Monday, it said I had 510 miles to empty. I think it was the gas I got at Buc-ees! LOL!
You're close to me. I'm at Barker Cypress/I-10. I usually get gas at Costco or Bucees. 510! Is that with a 26 gallon tank? I don't think I've ever seen more than 440, and it's usually right around 400.
 

digitaltrucker

Well-known member
First Name
Ed
Joined
Aug 6, 2020
Threads
18
Messages
404
Reaction score
209
Location
Texas
Vehicles
2021 F150 Platinum, 2013 F150 Lariat, 2008 F150 Lariat, 2005 XLT, 89 F150 Lariat
You're close to me. I'm at Barker Cypress/I-10. I usually get gas at Costco or Bucees. 510! Is that with a 26 gallon tank? I don't think I've ever seen more than 440, and it's usually right around 400.
Yes 26 gallon tank. I've been getting Exxon gas from the station at Kingsland and S Mason, they seem to have good pricing for Tier 1 gas.
Sponsored

 
 







Top