MPG ?
Lead Driver
Joined: Oct 2014
Posts: 5,934
Likes: 1,351
From: NY/Canada border
I'm on my third 7.3. Dealer sold you a bill of goods if they said 15 mpg city. Maybe on the highway unloaded. If you keep your foot out of it.
I've never seen 21 on the highway with any of my 7.3 10 speeds or 6.2 6 speeds. I hope you didn't base your purchase on those dealer claims.
I've never seen 21 on the highway with any of my 7.3 10 speeds or 6.2 6 speeds. I hope you didn't base your purchase on those dealer claims.
Lead Driver
Joined: Jan 2002
Posts: 8,616
Likes: 4,697
From: Itinerant
sorry, it's a v8 7.3 gas engine.
I've hand calculated it, and what the dash says, the dealership told me I should get 15 city and 21 highway, everything online pretty much says it's fuel efficient and those are the numbers I should be getting. I expected at least something close even in eco mode I'm around 8 or 9 mpg
I've hand calculated it, and what the dash says, the dealership told me I should get 15 city and 21 highway, everything online pretty much says it's fuel efficient and those are the numbers I should be getting. I expected at least something close even in eco mode I'm around 8 or 9 mpg
Go down to the 7.3 gas section and read some of the threads but watch those 4.30 rear end guys they'll tell you anything. LOL 😉
Logistics Pro
Joined: Jan 2010
Posts: 4,049
Likes: 1,607
My FIL's '22 with the 7.3, CCSB 4x4, would get about 18 highway, 12 city (maybe), and about 15 combined. So while OP is a little low, not outside the realm of possibility for such a big truck in the city.
Cargo Master
Joined: Mar 2021
Posts: 2,043
Likes: 1,333
they just don’t get good any gas mileage worth writing home about but that’s not what they’re really used for either
Cargo Master
Joined: Jan 2016
Posts: 2,669
Likes: 371
10ish or under in city is expected. 10 or under on long freeway trips while empty would mean something is wrong. May just need to get a few miles on it to loosen up.
I disagree with the idea these trucks are not built for fuel economy. They should not be compared to small cars but they should be compared to trucks in their class. Everyone cares (or at least they should) about fuel economy. It's silly to not want a truck, tractor, etc that is economical at its task.
I disagree with the idea these trucks are not built for fuel economy. They should not be compared to small cars but they should be compared to trucks in their class. Everyone cares (or at least they should) about fuel economy. It's silly to not want a truck, tractor, etc that is economical at its task.
FTE Leadership Emeritus
Joined: Sep 2000
Posts: 23,174
Likes: 1,678
From: Stephensville WI
10 MPG is pretty normal. Stop and go driving kills your fuel mileage, regardless of engine. It's just the pill you have to swallow when driving a Super Duty.
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Logistics Pro
Joined: Jan 2010
Posts: 4,049
Likes: 1,607
10ish or under in city is expected. 10 or under on long freeway trips while empty would mean something is wrong. May just need to get a few miles on it to loosen up.
I disagree with the idea these trucks are not built for fuel economy. They should not be compared to small cars but they should be compared to trucks in their class. Everyone cares (or at least they should) about fuel economy. It's silly to not want a truck, tractor, etc that is economical at its task.
I disagree with the idea these trucks are not built for fuel economy. They should not be compared to small cars but they should be compared to trucks in their class. Everyone cares (or at least they should) about fuel economy. It's silly to not want a truck, tractor, etc that is economical at its task.
As for city driving, if you want something economical for that, look at a hybrid or electric - it's the only way you're going to get decent numbers in the city.
Logistics Pro
Joined: Sep 2002
Posts: 4,410
Likes: 1,015
From: Central KY
15 city? HA! The dealer either has no clue or lied on purpose to sell a truck. The lifetime average for the 7.3L engine in the Super Duty over the last 3 years, using millions of miles of real world owner data from Fuelly, is around 12 MPG combined. Which means city MPG is likely around 10 MPG.
Fleet Mechanic
Joined: Jan 2022
Posts: 1,410
Likes: 712
You're right where you're going to be for the life of the truck, stop and go is hell on MPG with these trucks with the 7.3. I'm happy if I see double digit MPG while driving in city conditions. The good news is highway MPG is better but probably closer to the 15 that they said you'd get in the city....
Mountain Pass
Joined: Aug 2021
Posts: 112
Likes: 47
From: WA
I have a ‘23 7.3 with 3.73 gears. With my daily driving, 26 miles one way for work, mix of highway, city, and stop and go, I average about 12.5-13 hand calculated. Truck always shows closer to 14 on the dash, we all know that is not right. Unloaded and all highway driving around 70, best I got was about 16 hand calculated, truck said 16.5 on the dash.
Laughing Gas
Joined: Dec 2021
Posts: 1,087
Likes: 342
From: PG, BC, Canada
10ish or under in city is expected. 10 or under on long freeway trips while empty would mean something is wrong. May just need to get a few miles on it to loosen up.
I disagree with the idea these trucks are not built for fuel economy. They should not be compared to small cars but they should be compared to trucks in their class. Everyone cares (or at least they should) about fuel economy. It's silly to not want a truck, tractor, etc that is economical at its task.
I disagree with the idea these trucks are not built for fuel economy. They should not be compared to small cars but they should be compared to trucks in their class. Everyone cares (or at least they should) about fuel economy. It's silly to not want a truck, tractor, etc that is economical at its task.
as... There are things you CAN do to improve your trucks MPG performance without loosing any performance. FORD doesn't really care about their trucks MPG performance because most people on here who buy these trucks, seem to go by the credo of, "you bought the wrong truck if you care about fuel economy" and they do NOT expect good fuel mileage numbers and thus... that is what they get cause FORD delivers what the consumer expects... 
I have increased my trucks fuel economy by 21.1% empty, 27.1% loaded, 39.3% best empty highway, driving/using it exactly the same way... so, better/higher MPG can be achieved, but who cares. 
More Turbo
Joined: Feb 2011
Posts: 708
Likes: 188
I agree 100% with your assessment about not caring about fuel economy, it IS, silly... as... There are things you CAN do to improve your trucks MPG performance without loosing any performance. FORD doesn't really care about their trucks MPG performance because most people on here who buy these trucks, seem to go by the credo of, "you bought the wrong truck if you care about fuel economy" and they do NOT expect good fuel mileage numbers and thus... that is what they get cause FORD delivers what the consumer expects... I have increased my trucks fuel economy by 21.1% empty, 27.1% loaded, 39.3% best empty highway, driving/using it exactly the same way... so, better/higher MPG can be achieved, but who cares.
as... There are things you CAN do to improve your trucks MPG performance without loosing any performance. FORD doesn't really care about their trucks MPG performance because most people on here who buy these trucks, seem to go by the credo of, "you bought the wrong truck if you care about fuel economy" and they do NOT expect good fuel mileage numbers and thus... that is what they get cause FORD delivers what the consumer expects... I have increased my trucks fuel economy by 21.1% empty, 27.1% loaded, 39.3% best empty highway, driving/using it exactly the same way... so, better/higher MPG can be achieved, but who cares.