What's your Fuel Mileage on 2018-2021 Gt's 5.0 with 10 sp or Standards

[ENDEVR]

2018 GT 3.55 M6 here, when I was driving it to work while stock for a few months (90% highway) I averaged 24-25, now fbo with E85 in town only I’m lucky to get 12 lol

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[Zax]

Maybe this "Subject" has already been discussed in the past . If so I can't find it .... Ok Maybe I'm a D.A."
Just took a 500 mile round trip to Houston from East Texas. Temp. was in MID 90's So A/C was constantly on .
I decided to drive intelligently just to see what I could Squeeze out of my 2018 Gt . 5.0 10 speed auto. Had the
Cheap ass P/Brand 19 inch Factory tires . New set /35 PSI air pressure . In no hurry so I drove 70 MPH thru the back roads to IH 45
South to Houston . With the 16 Gallon {TOO SMALL fuel Tank" } Ford needs to fix that joke ....!!!
I put a Pint of Octane Boost and filled up with 93 Octane Shell gas . It was 70 miles of 2 lane blacktop to reach the Inter-State
The Speed Limit was 75 . Put cruise on 78 and kicked back in the "SLOW LANE" so as not to get run over. Seems 75 means 85+
to my brother Texans . Filled up on way home after getting out of Houston Traffic . No PEE STOPS .
Ran the fuel to very top and hit the button on fuel mileage and LO AND BEHOLD ...... 27.8 MPG !!!!! Best ever before was 24mpg with normal Mustang GT driving ....
Don't know if octane boost helped or not and had only one episode of a necessary passing of an IDIOT where I was "BAD" and speedo hit 105 MPH
before I realized it and I immediately slowed back to my 78 mph testing speed . Anybody got any better mileage to report . ? I know we "DON'T BUY THESE MONSTERS"
For Fuel Mileage ,Just thought it would be interesting to see what they are capable of . Believe me ....All that open road and no traffic took all my will power to
keep my foot off the gas pedal . Kinda like 20 years ago driving with a Coors Lite in the cup holder and watching my Buddy drinking it as I sipped a "DIET COKE"
I may have driven a bit fast and may have drank "LOTSA COLD BEER " ...BUT NEVER DID BOTH AT THE SAME TIME !!!!!!!!! 35 plus years in the Wrecking Yard Business , I saw too many windshields with "Hair and Blood " and way too many "Sheets covering up IDIOTS and INNOCENTS " alike ....... Junqdawg

I’ve gone from a 2017 GT manual to a 2021 10sp both with 3.55’s. The auto is averaging about 2mpg worse than the manual did. About 20.5 for the manual and 18.5 for the auto.

 

[Dsword]

I got 23.6 MPG on the 2021 Hot Rod Power Tour, combined: city, county and state highways, interstates, 140mph pulls occasionally as we do on Power Tour, and an afternoon of drag racing at Lucas Oil Raceway. I reset the trip meter as I left town. When I returned it said 1599.7 miles, 23.6 mpg..

Total of ~3700 miles on my 2021 M6 GT Premium w/PP. I DID NOT do the math manually at the fuel pump as I don’t care that much about the MPG. No matter, I love my GT.

 

[Soonertim4]

I got 23.6 MPG on the 2021 Hot Rod Power Tour, combined: city, county and state highways, interstates, 140mph pulls occasionally as we do on Power Tour, and an afternoon of drag racing at Lucas Oil Raceway. I reset the trip meter as I left town. When I returned it said 1599.7 miles, 23.6 mpg..

Total of ~3700 miles on my 2021 M6 GT Premium w/PP. I DID NOT do the math manually at the fuel pump as I don’t care that much about the MPG. No matter, I love my GT.

That is one clean looking stang

 

[Dsword]

That is one clean looking stang

Thank you sir!

 

[smoke_wagon_6g]

This guy crossed the US in about 26 hours, averaged 108 MPH, and got 12 MPG:

https://www.roadandtrack.com/car-cu...a-in-25-hours-55-minutes-in-a-rental-mustang/

He installed extra fuel tanks. He also claims the top end was 159.

 

[CJJon]

What's Fuel Mileage?

 

[dx2]

My goal is to get as bad a mileage figure as I can get . . . . . . .

I think 0 mpg would be pretty bad. Althogh that would mean to just start the engine and watch it idle for I don't know how many hours.

 

[dx2]

What's Fuel Mileage?

How much gallons of fuel you can burn per mile.
This one is pretty good at it:

 

[Weyland-Yutani]

2018 with manual and my running average is 19 MPG.

That's mostly from a 12 mile daily commute. But it also includes one 4 hour road trip and I usually take it out and ass-around on Sunday mornings while all the decent folk are in church.

 

[NTXChris]

2019 PP1/6 Speed here. I commute 60 miles each day, about 60% of that is highway. My average since buying the car last November is 19.0 MPG going by the instrument cluster. During the week, my per tank average can be around 24, but the weekends drop down to ~15 or so because I enjoy the occasional back road and abide by the "redline it at least once a day" mentality.

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