Sponsored

Gas Mileage Comparison

GrabThatBlue

Well-Known Member
Joined
Jan 13, 2025
Threads
36
Messages
2,415
Reaction score
2,642
Location
Between Canada and Europe
Vehicle(s)
Mustang GT Premium, 401A, 10R80, PP, AE, NPP, MR, Recaro
If gas mileage is your biggest issue with the GT, then you should have purchased an Eco-Boost!

As a comparison...

My 24 Eco-Boost in town averages 19.5 to 20 MPG. On the highway at ≈70 MPH, it hovers around 35 to 36 MPG depending on terrain. This is with the FPT.
Have you even read his first sentence?
Sponsored

 

TSimo

Active Member
Joined
Jan 13, 2026
Threads
5
Messages
40
Reaction score
18
Location
California
Vehicle(s)
2026 GT premium convertible; 2022 Porsche Cayenne S; 2020 Mercedes S560 4Matic
Does anyone see a difference when using 87 vs 89 vs 91 octane?

My car indicates to use 87 octane but I usually put 89 or 91

We can't get 93 here in the people's republic of California 🤬
 

Achlys

Well-Known Member
Joined
May 31, 2026
Threads
5
Messages
64
Reaction score
108
Location
KC Metro
Vehicle(s)
2026 Mustang GT Premium 401A, A10, 3.55, AE, Bronco Sport Badlands Sasquatch
4600ish miles averaging 22.5, highest 26.
3/4 of my miles are highway at around 65mph.
i play a little daily, enough for a grin or two, sometimes three 😀. Had her for about 10 weeks.
 


LouG

Well-Known Member
Joined
Mar 11, 2025
Threads
35
Messages
2,746
Reaction score
3,252
Location
New Zealand
Vehicle(s)
2025 Mustang GT
My average over 18 months is 13.4 L/100kms. Best was 8.6 ( a unicorn maybe, usually low 10's), worst was 19.
 

IFFV68

Well-Known Member
Joined
Jan 22, 2024
Threads
10
Messages
917
Reaction score
512
Location
Colorado
Vehicle(s)
2020 F150 4x4 Limited. 2024 GT Mustang Premium. Both in Rapid Red.
First, let me say that I didn't but my2024 GT Vert Premium for the gas mileage, But I am interested in hearing from the community on their experience with mileage. I started out stock and added a bunch of Steeda suspension parts which I love. Using mostly Normal mode and Sport mode, usually around town and on local freeways, I was averaging about 17.5 mpg always on 93 Sunoco Gas. Along about January of this year, that suddenly dropped to about 15.8 MPG average in all the same conditions. In May, I had a Whipple stage 2 installed along with Kooks long tube headers and Kooks high temp green cats. I did this knowing full well mileage would take a hit, but again, I didn't do any of this to get mileage. After Whipple and header install, I'm now averaging about 13.5 MPG. I don't track it and don't do any hard pulls. Just curious what others are seeing in the GT Premium configurations.
i’ve been getting around 17 to 20 miles per gallon around town if Eye Dr. sensible
First, let me say that I didn't but my2024 GT Vert Premium for the gas mileage, But I am interested in hearing from the community on their experience with mileage. I started out stock and added a bunch of Steeda suspension parts which I love. Using mostly Normal mode and Sport mode, usually around town and on local freeways, I was averaging about 17.5 mpg always on 93 Sunoco Gas. Along about January of this year, that suddenly dropped to about 15.8 MPG average in all the same conditions. In May, I had a Whipple stage 2 installed along with Kooks long tube headers and Kooks high temp green cats. I did this knowing full well mileage would take a hit, but again, I didn't do any of this to get mileage. After Whipple and header install, I'm now averaging about 13.5 MPG. I don't track it and don't do any hard pulls. Just curious what others are seeing in the GT Premium configurations.
i’ve been getting around 17 to 20 MPG
First, let me say that I didn't but my2024 GT Vert Premium for the gas mileage, But I am interested in hearing from the community on their experience with mileage. I started out stock and added a bunch of Steeda suspension parts which I love. Using mostly Normal mode and Sport mode, usually around town and on local freeways, I was averaging about 17.5 mpg always on 93 Sunoco Gas. Along about January of this year, that suddenly dropped to about 15.8 MPG average in all the same conditions. In May, I had a Whipple stage 2 installed along with Kooks long tube headers and Kooks high temp green cats. I did this knowing full well mileage would take a hit, but again, I didn't do any of this to get mileage. After Whipple and header install, I'm now averaging about 13.5 MPG. I don't track it and don't do any hard pulls. Just curious what others are seeing in the GT Premium configurations.
[/QUOTE

i’ve been getting around 16 or 20 MPG if I drive sensible. Even with the AC on.
BUT,
Sometimes I have a Lead Foot.
My Mileage can be all over the place.
I only use TOP TIER Gasoline ⛽.
It costs more but worth it to me.
The most I ever have got is 27-28 MPG.
Colorado has some very Steep Hills to go down.
Mileage is very Subjective.
Probably 12-16 would be the best Average for me.
 
Last edited:

Bear376

Well-Known Member
Joined
Oct 9, 2018
Threads
4
Messages
363
Reaction score
211
Location
Stillwater, OK
Vehicle(s)
2025 GT (60th), 2019 EcoBoost , 2013 MCA SE, 2019 Flex, 2017 F150
After one year, 13,700 miles. Mostly 80+ mph. Average 23.5 mpg. I run 91 octane E-0. highest mpg 29.3, lowest 12.6.
Sponsored

 
 








Top